From patchwork Sun Oct 21 13:10:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650797 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7EBD01508 for ; Sun, 21 Oct 2018 13:10:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6CB0A2877F for ; Sun, 21 Oct 2018 13:10:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6081628782; Sun, 21 Oct 2018 13:10:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9999A2877F for ; Sun, 21 Oct 2018 13:10:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727756AbeJUVZL (ORCPT ); Sun, 21 Oct 2018 17:25:11 -0400 Received: from mail-he1eur01on0045.outbound.protection.outlook.com ([104.47.0.45]:64912 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727688AbeJUVZL (ORCPT ); Sun, 21 Oct 2018 17:25:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+879SXv+7Y8DzyvSxQeMfFBjX0ZNtbl70uRqcaWiiz8=; b=El60kLzkPc+OPaCc8QGQGb8TlAOiJtQ3A4Yh6T6ykuGRK8SQacXL1OlSUQcFXkZkHpo8Z+Hno/qb5OTaTtPdrYhh/eCi+z5UsTGo9mPukaVMvNfBJCERUHRDep9PvpHbvHs0Uw1ObrTmz3lT0yCWDAyW0xRqDfiNndriIY/gw6k= Received: from AM0PR04MB4211.eurprd04.prod.outlook.com (52.134.126.21) by AM0PR04MB4580.eurprd04.prod.outlook.com (52.135.149.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1250.30; Sun, 21 Oct 2018 13:10:48 +0000 Received: from AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10]) by AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10%2]) with mapi id 15.20.1250.028; Sun, 21 Oct 2018 13:10:48 +0000 From: "A.s. Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 1/9] clk: clk-divider: add CLK_DIVIDER_ZERO_GATE clk support Thread-Topic: [PATCH RESEND V4 1/9] clk: clk-divider: add CLK_DIVIDER_ZERO_GATE clk support Thread-Index: AQHUaT97je2HHpUTbUy+9sDZKHmTVg== Date: Sun, 21 Oct 2018 13:10:48 +0000 Message-ID: <1540127173-21346-2-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:AChiRNhchQ20bSJf1xUyNzIdX2Ka7p7h3tk7+qp60odvBB5c05gd0k9rAIDRZN5pcenQor2oALqACBqTlDESpvUBtrCQQxNCzMbZXxChRmzv9KrFT6nlweez5+6iBJMsIsoMLuG65UHg9ffF/mBvkUv8WvOPxuumPKdLtnQwFnz5W8jjzmeQQjTFoh9bVFv5eeZ1WQS3Jzp+Uvv2gQZOicYlXxqDYEqyGhtUHq3VqrLrDacqGa4M8RyywYwVevq4SvLTvsaQzYmpdW9T8ykEtGg8NMrKx6/x9JWcnUQuxuxo0IGeLEpIGAw0vGMWSqwNigj7PTuzhpyhaMgqPY5kKLPTr4+5k0fMcFa4K+lPXmYPGW0ncFEMUUDztajU7kfZJP//8lZXJLfCCR8DwCq5WNtL5+w+CkzE1q+mDytpvRqlmagCioEn/2Zy1BUD+Ttiw6FnpqGO6VxJ/ib15+GgJg==;5:P7I6Fhbb0ZK+TuzsVH4T487xt3+FUvha5gnciEd6ogaVxUPEqvDgyXBtxxS7C81HezGeabvqurHUg2eBCsNUcnudrsDzpwDilmVKiSTP70ZjBNSgGUm4+IEkEW4cn+xrwluemNglOy7WOPMf/EtvqZOdayH9ahZqRj4LhKW3FmM=;7:ZLIUJHzqLMyZDVsXbxSNRMdVwjDcb/bFhNaBXsmtlvMQmErWwdWtI6K0B8V7ripSiJsxA+JN2quVrsFlfFfHkBIEACYAXcDnrLvSuC1861ifZpDJ9EYaHBZUbrCDZhXVAKrMFrsmTbu96+37B4RofJoSR+9LCobrW/khVgggOdyStczYI7b+FJ+7chtDly4PGOWqXOn1umC6BFCIeqpnk4zk9TBj3B8leSgAQNckTks7dg628e+YaF0gU7YAWDGG x-ms-office365-filtering-correlation-id: f4a72d26-18d9-4a04-d7d1-08d637569e4f x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: toUkTE6rSenjdoNBFYnKFzPYio1yLTPwJoPEBtCTWg7ocdO5Ya7tutXv92FgFp90IdVsVYHRQWZfbn7k6vz9DmF2qxCUyvpkoNBGp/vkQsHFv4H+sUQvwU+0Jekv0F78D2irWxqDg759bYSU9g8ebSYm7dwmI4i4Yz0PNhNUFa8k/xL8D0rud/SSVERZJcyLvBkAX954AC24iG0+3eoEDY8H4+TGWIZTX94FN5SlOWpX2Gxn/9AuPmajKcAM5//u7oWxDpOLvUiCTmHxuKI59h15qC8jzSryhqHcS/ia/mcMsHWTZM1ULdaUrtyrndqYjZxCDfILSZSmWORVm0YzP3juLgdgxhYSuuMj9MWXWSc= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: f4a72d26-18d9-4a04-d7d1-08d637569e4f X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:10:48.6157 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For dividers with zero indicating clock is disabled, instead of giving a warning each time like "clkx: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not set" in exist code, we'd like to introduce enable/disable function for it. e.g. 000b - Clock disabled 001b - Divide by 1 010b - Divide by 2 ... Set rate when the clk is disabled will cache the rate request and only when the clk is enabled will the driver actually program the hardware to have the requested divider value. Similarly, when the clk is disabled we'll write a 0 there, but when the clk is enabled we'll restore whatever rate (divider) was chosen last. It does mean that recalc rate will be sort of odd, because when the clk is off it will return 0, and when the clk is on it will return the right rate. So to make things work, we'll need to return the cached rate in recalc rate when the clk is off and read the hardware when the clk is on. NOTE for the default off divider, the recalc rate will still return 0 as there's still no proper preset rate. Enable such divider will give user a reminder error message. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * no changes v2->v3: * split normal and gate ops * fix the possible racy v1->v2: * add enable/disable for the type of CLK_DIVIDER_ZERO_GATE dividers --- drivers/clk/clk-divider.c | 152 +++++++++++++++++++++++++++++++++++++++++++ include/linux/clk-provider.h | 9 +++ 2 files changed, 161 insertions(+) diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index b6234a5..b3566fd 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -122,6 +122,9 @@ unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate, div = _get_div(table, val, flags, width); if (!div) { + if (flags & CLK_DIVIDER_ZERO_GATE) + return 0; + WARN(!(flags & CLK_DIVIDER_ALLOW_ZERO), "%s: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not set\n", clk_hw_get_name(hw)); @@ -145,6 +148,34 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw, divider->flags, divider->width); } +static unsigned long clk_divider_gate_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_divider *divider = to_clk_divider(hw); + unsigned long flags = 0; + unsigned int val; + + if (divider->lock) + spin_lock_irqsave(divider->lock, flags); + else + __acquire(divider->lock); + + if (!clk_hw_is_enabled(hw)) { + val = divider->cached_val; + } else { + val = clk_readl(divider->reg) >> divider->shift; + val &= clk_div_mask(divider->width); + } + + if (divider->lock) + spin_unlock_irqrestore(divider->lock, flags); + else + __release(divider->lock); + + return divider_recalc_rate(hw, parent_rate, val, divider->table, + divider->flags, divider->width); +} + static bool _is_valid_table_div(const struct clk_div_table *table, unsigned int div) { @@ -437,6 +468,108 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate, return 0; } +static int clk_divider_gate_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_divider *divider = to_clk_divider(hw); + unsigned long flags = 0; + int value; + u32 val; + + value = divider_get_val(rate, parent_rate, divider->table, + divider->width, divider->flags); + if (value < 0) + return value; + + if (divider->lock) + spin_lock_irqsave(divider->lock, flags); + else + __acquire(divider->lock); + + if (clk_hw_is_enabled(hw)) { + if (divider->flags & CLK_DIVIDER_HIWORD_MASK) { + val = clk_div_mask(divider->width) << (divider->shift + 16); + } else { + val = clk_readl(divider->reg); + val &= ~(clk_div_mask(divider->width) << divider->shift); + } + val |= (u32)value << divider->shift; + clk_writel(val, divider->reg); + } else { + divider->cached_val = value; + } + + if (divider->lock) + spin_unlock_irqrestore(divider->lock, flags); + else + __release(divider->lock); + + return 0; +} + +static int clk_divider_enable(struct clk_hw *hw) +{ + struct clk_divider *divider = to_clk_divider(hw); + unsigned long flags = 0; + u32 val; + + if (!divider->cached_val) { + pr_err("%s: no valid preset rate\n", clk_hw_get_name(hw)); + return -EINVAL; + } + + if (divider->lock) + spin_lock_irqsave(divider->lock, flags); + else + __acquire(divider->lock); + + /* restore div val */ + val = clk_readl(divider->reg); + val |= divider->cached_val << divider->shift; + clk_writel(val, divider->reg); + + if (divider->lock) + spin_unlock_irqrestore(divider->lock, flags); + else + __release(divider->lock); + + return 0; +} + +static void clk_divider_disable(struct clk_hw *hw) +{ + struct clk_divider *divider = to_clk_divider(hw); + unsigned long flags = 0; + u32 val; + + if (divider->lock) + spin_lock_irqsave(divider->lock, flags); + else + __acquire(divider->lock); + + /* store the current div val */ + val = clk_readl(divider->reg) >> divider->shift; + val &= clk_div_mask(divider->width); + divider->cached_val = val; + clk_writel(0, divider->reg); + + if (divider->lock) + spin_unlock_irqrestore(divider->lock, flags); + else + __release(divider->lock); +} + +static int clk_divider_is_enabled(struct clk_hw *hw) +{ + struct clk_divider *divider = to_clk_divider(hw); + u32 val; + + val = clk_readl(divider->reg) >> divider->shift; + val &= clk_div_mask(divider->width); + + return val ? 1 : 0; +} + const struct clk_ops clk_divider_ops = { .recalc_rate = clk_divider_recalc_rate, .round_rate = clk_divider_round_rate, @@ -444,6 +577,16 @@ const struct clk_ops clk_divider_ops = { }; EXPORT_SYMBOL_GPL(clk_divider_ops); +const struct clk_ops clk_divider_gate_ops = { + .recalc_rate = clk_divider_gate_recalc_rate, + .round_rate = clk_divider_round_rate, + .set_rate = clk_divider_gate_set_rate, + .enable = clk_divider_enable, + .disable = clk_divider_disable, + .is_enabled = clk_divider_is_enabled, +}; +EXPORT_SYMBOL_GPL(clk_divider_gate_ops); + const struct clk_ops clk_divider_ro_ops = { .recalc_rate = clk_divider_recalc_rate, .round_rate = clk_divider_round_rate, @@ -459,6 +602,7 @@ static struct clk_hw *_register_divider(struct device *dev, const char *name, struct clk_divider *div; struct clk_hw *hw; struct clk_init_data init; + u32 val; int ret; if (clk_divider_flags & CLK_DIVIDER_HIWORD_MASK) { @@ -476,6 +620,8 @@ static struct clk_hw *_register_divider(struct device *dev, const char *name, init.name = name; if (clk_divider_flags & CLK_DIVIDER_READ_ONLY) init.ops = &clk_divider_ro_ops; + else if (clk_divider_flags & CLK_DIVIDER_ZERO_GATE) + init.ops = &clk_divider_gate_ops; else init.ops = &clk_divider_ops; init.flags = flags | CLK_IS_BASIC; @@ -491,6 +637,12 @@ static struct clk_hw *_register_divider(struct device *dev, const char *name, div->hw.init = &init; div->table = table; + if (div->flags & CLK_DIVIDER_ZERO_GATE) { + val = clk_readl(reg) >> shift; + val &= clk_div_mask(width); + div->cached_val = val; + } + /* register the clock */ hw = &div->hw; ret = clk_hw_register(dev, hw); diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 08b1aa7..08f135a 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -387,6 +387,7 @@ struct clk_div_table { * @shift: shift to the divider bit field * @width: width of the divider bit field * @table: array of value/divider pairs, last entry should have div = 0 + * @cached_val: cached div hw value used for CLK_DIVIDER_ZERO_GATE * @lock: register lock * * Clock with an adjustable divider affecting its output frequency. Implements @@ -415,6 +416,12 @@ struct clk_div_table { * CLK_DIVIDER_MAX_AT_ZERO - For dividers which are like CLK_DIVIDER_ONE_BASED * except when the value read from the register is zero, the divisor is * 2^width of the field. + * CLK_DIVIDER_ZERO_GATE - For dividers which are like CLK_DIVIDER_ONE_BASED + * when the value read from the register is zero, it means the divisor + * is gated. For this case, the cached_val will be used to store the + * intermediate div for the normal rate operation, like set_rate/get_rate/ + * recalc_rate. When the divider is ungated, the driver will actually + * program the hardware to have the requested divider value. */ struct clk_divider { struct clk_hw hw; @@ -423,6 +430,7 @@ struct clk_divider { u8 width; u8 flags; const struct clk_div_table *table; + u32 cached_val; spinlock_t *lock; }; @@ -436,6 +444,7 @@ struct clk_divider { #define CLK_DIVIDER_ROUND_CLOSEST BIT(4) #define CLK_DIVIDER_READ_ONLY BIT(5) #define CLK_DIVIDER_MAX_AT_ZERO BIT(6) +#define CLK_DIVIDER_ZERO_GATE BIT(7) extern const struct clk_ops clk_divider_ops; extern const struct clk_ops clk_divider_ro_ops; From patchwork Sun Oct 21 13:10:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650799 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 66F7E90 for ; Sun, 21 Oct 2018 13:11:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 566E728780 for ; Sun, 21 Oct 2018 13:11:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 49C652877F; Sun, 21 Oct 2018 13:11:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AD90E2877F for ; Sun, 21 Oct 2018 13:11:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727715AbeJUVZ0 (ORCPT ); Sun, 21 Oct 2018 17:25:26 -0400 Received: from mail-he1eur01on0045.outbound.protection.outlook.com ([104.47.0.45]:64912 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727477AbeJUVZ0 (ORCPT ); Sun, 21 Oct 2018 17:25:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=nIf2COuK0zLkMJh3lpZjsWmlj8zfmdBSe3G9aAkENZE=; b=mpV8BdUgVVh+vzvIzJ+AMUdeYWd5iUDuiJe7c7X5DOGkXEoTUtgjBKlNrEQFod9Lsgy2MAC+dcZN5QXUfHi+XGEAAikAGrL/ECLEIVDfHvJgUCMjCHE+ZzvFOjPjijVjw8WwvK3/mqUyHqmf3ATliXOLIAO4ngxPf4FyTnf3IkU= Received: from AM0PR04MB4211.eurprd04.prod.outlook.com (52.134.126.21) by AM0PR04MB4580.eurprd04.prod.outlook.com (52.135.149.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1250.30; Sun, 21 Oct 2018 13:10:52 +0000 Received: from AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10]) by AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10%2]) with mapi id 15.20.1250.028; Sun, 21 Oct 2018 13:10:52 +0000 From: "A.s. Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 2/9] clk: fractional-divider: add CLK_FRAC_DIVIDER_ZERO_BASED flag support Thread-Topic: [PATCH RESEND V4 2/9] clk: fractional-divider: add CLK_FRAC_DIVIDER_ZERO_BASED flag support Thread-Index: AQHUaT9+IL/E0HVOXUillU8lJDIyeg== Date: Sun, 21 Oct 2018 13:10:52 +0000 Message-ID: <1540127173-21346-3-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:AUwSgMT5quNafxRuVsCHpQ9/8xVc3HnrndW8GVqS3hlo5Sc2wEXSgPYg2CyENB8IVuHmaOQ104GqEOySufZhFC8d9lIG2r+2us9zCL79MjcgMurUBf6mwnUuuDPX/L74CgRQIhzNDKnLDJMCacHUIjxIJW6Vw06x3HwJ3gqKUPnQfA9hab4NYgtMIIc56IW2MNPb14aur5S5lqfyolC6EQR44QcXhxuwsTMqLG552u0MidHQUEGurHOF93JNn9JIJnYYBnh76gk7nEDO+24g+o1b0DKUhkfVMOl7FjFW99aZQRy5QUhCwXddtEXDj5DOCnoc2v1uhzsfsvkFTsIA3FTOgpBhemM6yHHDjG9Az1W3RQAYyocVFNFahpLd1pukx+651vE1JT+/n3VVTxpFdJaH4g55xM89ucRajETateXpcatuVUibVaVmRKQvRvEHCBXm6x+9gCXqX0mcPEkiUg==;5:/bwLz9HtUlKXSWDHPaZD+E+C/XGKbxH8Pnl0B8D/ZXW5lsmqLhL7uUA/7gmIq3AkDArXkTbJ85XqNVdqaCczu1EY9xA9eS4B45/tmZnuZh57kLSc9O5PgijiK72faotmnp9OW3tq0Kl9XDGlGM+ya8m/aqFVQx0P7Jof1+xPmr4=;7:wTdLkxDW76zZ6z97SlHnFj2VbQx+tDNr5bJPQKWxmogAMrYp0gNBhsbj72JglXCFZCD8gUQ5PMhBshIVgq/YXUzbgWMPG5DS+VxExdmLPQucUT71D2EeUtiOX6Tuw2ug/PvubG47ELksHTHrcNlR9YYLH5OTwBBbcTCEOoeb18rGAyPdIn2atIjKBMcG1prisOemDDHxCa66E1aK9TEolamFw0gwCWbN8vvJ2/VWgzKXrJapXdDIGCMEwg7l8tG8 x-ms-office365-filtering-correlation-id: 6a63d259-e2bc-4333-8180-08d63756a0a1 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; x-ms-traffictypediagnostic: AM0PR04MB4580: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231355)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123562045)(20161123564045)(20161123560045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4580;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4580; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(366004)(346002)(39850400004)(136003)(54534003)(199004)(189003)(476003)(2616005)(11346002)(446003)(66066001)(54906003)(316002)(26005)(52116002)(99286004)(486006)(186003)(7736002)(386003)(6506007)(305945005)(102836004)(105586002)(76176011)(50226002)(86362001)(106356001)(256004)(14444005)(81156014)(81166006)(217873002)(8936002)(8676002)(6916009)(5250100002)(25786009)(2900100001)(2501003)(68736007)(71190400001)(2906002)(5660300001)(14454004)(3846002)(4326008)(6116002)(6512007)(53936002)(2351001)(6486002)(36756003)(71200400001)(478600001)(5640700003)(97736004)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4580;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: cyURRt/tT4mYaOxTFkFgx+h+4kJ75PH7rDl8A6nLCBniYIkChJtrojwyHE3lUMZJfeIGtHD5hMkRNGB4wvkzzhatRmwMMDTkIGQBlv2yL49JAK3BK5mJUp061s//Ipp+IeKhjawRnJMICXgFNzsTj69lj03Vx9Mk5jrCgBDDfmhGPHNYuFZfZ1WVub5jUwH5eVi1hfjhoTeJItGZsVb0McDFlWpxop6s/t4za3KGWOWQK5LssaYHuwmb6cqGYr4ZXfjjw5j67TTYWqognSlC00jGzUaqc+xT9+GPfzUmRY8O2YfZBBx/Q71v04ii1jPqRsfhG20zBKWFJSQPNPMlWiqdorwOFF1r3oBoZAwCDpM= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6a63d259-e2bc-4333-8180-08d63756a0a1 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:10:52.6158 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding CLK_FRAC_DIVIDER_ZERO_BASED flag to indicate the numerator and denominator value in register are start from 0. This can be used to support frac dividers like below: Divider output clock = Divider input clock x [(frac +1) / (div +1)] where frac/div in register is: 000b - Divide by 1. 001b - Divide by 2. 010b - Divide by 3. Cc: Stephen Boyd Cc: Michael Turquette Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * no changes v2->v3: * no changes v1->v2: * improve comments suggested by Stephen --- drivers/clk/clk-fractional-divider.c | 10 ++++++++++ include/linux/clk-provider.h | 8 ++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/clk/clk-fractional-divider.c b/drivers/clk/clk-fractional-divider.c index fdf625f..7ccde6b 100644 --- a/drivers/clk/clk-fractional-divider.c +++ b/drivers/clk/clk-fractional-divider.c @@ -40,6 +40,11 @@ static unsigned long clk_fd_recalc_rate(struct clk_hw *hw, m = (val & fd->mmask) >> fd->mshift; n = (val & fd->nmask) >> fd->nshift; + if (fd->flags & CLK_FRAC_DIVIDER_ZERO_BASED) { + m++; + n++; + } + if (!n || !m) return parent_rate; @@ -103,6 +108,11 @@ static int clk_fd_set_rate(struct clk_hw *hw, unsigned long rate, GENMASK(fd->mwidth - 1, 0), GENMASK(fd->nwidth - 1, 0), &m, &n); + if (fd->flags & CLK_FRAC_DIVIDER_ZERO_BASED) { + m--; + n--; + } + if (fd->lock) spin_lock_irqsave(fd->lock, flags); else diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 08f135a..90d7c26 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -603,6 +603,12 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw); * @lock: register lock * * Clock with adjustable fractional divider affecting its output frequency. + * + * Flags: + * CLK_FRAC_DIVIDER_ZERO_BASED - by default the numerator and denominator + * is the value read from the register. If CLK_FRAC_DIVIDER_ZERO_BASED + * is set then the numerator and denominator are both the value read + * plus one. */ struct clk_fractional_divider { struct clk_hw hw; @@ -622,6 +628,8 @@ struct clk_fractional_divider { #define to_clk_fd(_hw) container_of(_hw, struct clk_fractional_divider, hw) +#define CLK_FRAC_DIVIDER_ZERO_BASED BIT(0) + extern const struct clk_ops clk_fractional_divider_ops; struct clk *clk_register_fractional_divider(struct device *dev, const char *name, const char *parent_name, unsigned long flags, From patchwork Sun Oct 21 13:10:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650801 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4966690 for ; Sun, 21 Oct 2018 13:11:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 38E512877F for ; Sun, 21 Oct 2018 13:11:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2C38528782; Sun, 21 Oct 2018 13:11:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 772CB2877F for ; Sun, 21 Oct 2018 13:11:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727825AbeJUVZa (ORCPT ); Sun, 21 Oct 2018 17:25:30 -0400 Received: from mail-he1eur01on0045.outbound.protection.outlook.com ([104.47.0.45]:64912 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727477AbeJUVZ3 (ORCPT ); Sun, 21 Oct 2018 17:25:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=U0EhitKCGo/9Ctx6Tfyde6/OwLLiZHv+XKCM1xHhD6Q=; b=vs4pqBi93/cUgaMBsv9cpVnXG1N2g5KGuIir6m9XrjC4l69gAx5/RxRG42ZRxECcix0yv+V1JDPKsRrmg5mXK7hVjwxgPm8HM3+L5swt2hpjhaqdtZQs7fEyKPVLtPdbDa9Y6bEn8zLgt7GaP+oIFIZ1O+oYFbmTctjgjkD1LF8= Received: from AM0PR04MB4211.eurprd04.prod.outlook.com (52.134.126.21) by AM0PR04MB4580.eurprd04.prod.outlook.com (52.135.149.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1250.30; Sun, 21 Oct 2018 13:10:56 +0000 Received: from AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10]) by AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::797a:f972:9281:6d10%2]) with mapi id 15.20.1250.028; Sun, 21 Oct 2018 13:10:56 +0000 From: "A.s. Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 3/9] clk: imx: add pllv4 support Thread-Topic: [PATCH RESEND V4 3/9] clk: imx: add pllv4 support Thread-Index: AQHUaT+ARhoGQHwUVEmK8lzIfdE+yg== Date: Sun, 21 Oct 2018 13:10:56 +0000 Message-ID: <1540127173-21346-4-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:3cJLf6ReHJ+UXxy3hQjTJC2NRhtb0ji0BJwxlP0yuuwHUTiqcMdtFWHRCdAh0EtofIkC5xzTZcnxvFd5PmaCX+jdaNxw0B6BYJKEXB2wLQc/opdPT7EkaRfrPeSO33k4/wMRfvt+YIs5RQYvds2RJUZ2bRYSSqyx8um54htaB/1X5OzpMJV/myW1C+ca2q8oTxHYMfItkk8bNX5N+edWTPE1IIoEp+18ccsuRyuRco9WgicaEBqjEMhXUy/8qqKZz4Dz7wWgvTV9J8toTeQlxvL62aZiSnrYTQhTB4howEpGj7VKW2bLntMSY6v5zP306L6Uya0hh79NlASkiRac3HXl9WPMOyTsolfZZrBXS0glUrjaq6d+ogyExWvpeKgWqaji5JNrt4VzbmjGB5JZzYwGekghXQEW5HZ5pPF3Zkg3AnL1V1dD889NlWWK/+pfBEns6UYl5JZjtV47aGde6w==;5:/Zh0yf5IdSr+azoeUDnTP58rrxmfJzNCePEEcg+q1m/i4XHTmHbYYL8AdP3OB4bd1u2iaG16QmCdzWJB0oEOyueYHv+fTVHxUR59Hs+MYYlSzkVECDmZVmv9ZSjNR9cGtHAbLf91wNpcxXZ8ci6aBUBpS1SwPk3hMY+QQerDaK4=;7:HgbXb76ewSXga87JDniFb5bV8ybZofCUp8nbi0J19kq1pGbDPS3E9uFqawrZNwodw8fAWQj+WqQx12pziRbwezF5bbv6zL93yrhu59YzI3gJVc+5AMo5SG9WRl1oovRYYfSYGPtoHOEcAPEO7qq1RjOxj1ATmEsb7QtCVAKjWpZy0y9pExH2u3iK7Mc6TslzscMED4yw2HQIBtotzzFB5X9eY09qb8CXHO6fZz2nrwclS/HlDs5gFE/2IosaKE7I x-ms-office365-filtering-correlation-id: 41497a27-b309-4d99-dba8-08d63756a303 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; x-ms-traffictypediagnostic: AM0PR04MB4580: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231355)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123562045)(20161123564045)(20161123560045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4580;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4580; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(366004)(346002)(39850400004)(136003)(54534003)(199004)(189003)(476003)(2616005)(11346002)(446003)(66066001)(54906003)(316002)(26005)(52116002)(99286004)(486006)(186003)(7736002)(386003)(6506007)(305945005)(102836004)(105586002)(76176011)(50226002)(86362001)(106356001)(575784001)(256004)(14444005)(81156014)(81166006)(217873002)(8936002)(8676002)(6916009)(5250100002)(25786009)(2900100001)(2501003)(68736007)(71190400001)(2906002)(5660300001)(14454004)(3846002)(4326008)(6116002)(6512007)(53936002)(2351001)(6486002)(36756003)(71200400001)(478600001)(5640700003)(97736004)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4580;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: g/uIMIyX+7lPFDw0c7jVJfHLXzdBtrJQzPl6PPpWXpEWVMP27Z0UrSicPoMOkXPGCbL1TY6aaObPbN0hm1EoI1sH8nV8UU4jJYyhiWHV8lJqtuQCGjD+l9VPcuusq+LFZB4U4/jQumShn1AHBbNFMlVnGrcMwhagX9W76l/Hc0r8obsSBGKzYuvxNvYCK/9NPx/jcIU8uWXDII4Bgn+bh6Qz1pM/lXGPoRB1hYiVF8aYkEp8FRu0kOg572y+6UUI6rkR9LbjT2YazUouE+7DQmtM4IlK4cLSt4zh+st05+msFY6A2vblWW3NvW02c5T+5n0sKECh2aWH6eCkdn0FSQtKpfLipkl/CvRbnHPcELw= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 41497a27-b309-4d99-dba8-08d63756a303 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:10:56.7564 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP pllv4 is designed for System Clock Generation (SCG) module observed in IMX ULP SoC series. e.g. i.MX7ULP. The SCG modules generates clock used to derive processor, system, peripheral bus and external memory interface clocks while this patch intends to support the PLL part. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * no changes v2->v3: * no changes v1->v2: * remove clk_pllv4_is_enabled() check in set_rate, instead it will be handled by core later. * use readl_poll_timeout * use clk_hw_register instead of clk_register * other minor changes --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-pllv4.c | 182 ++++++++++++++++++++++++++++++++++++++++++++ drivers/clk/imx/clk.h | 3 + 3 files changed, 186 insertions(+) create mode 100644 drivers/clk/imx/clk-pllv4.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 8c3baa7..bfe31bf 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -11,6 +11,7 @@ obj-y += \ clk-pllv1.o \ clk-pllv2.o \ clk-pllv3.o \ + clk-pllv4.o \ clk-pfd.o obj-$(CONFIG_SOC_IMX1) += clk-imx1.o diff --git a/drivers/clk/imx/clk-pllv4.c b/drivers/clk/imx/clk-pllv4.c new file mode 100644 index 0000000..67c64c7 --- /dev/null +++ b/drivers/clk/imx/clk-pllv4.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Author: Dong Aisheng + * + */ + +#include +#include +#include +#include + +/* PLL Control Status Register (xPLLCSR) */ +#define PLL_CSR_OFFSET 0x0 +#define PLL_VLD BIT(24) +#define PLL_EN BIT(0) + +/* PLL Configuration Register (xPLLCFG) */ +#define PLL_CFG_OFFSET 0x08 +#define BP_PLL_MULT 16 +#define BM_PLL_MULT (0x7f << 16) + +/* PLL Numerator Register (xPLLNUM) */ +#define PLL_NUM_OFFSET 0x10 + +/* PLL Denominator Register (xPLLDENOM) */ +#define PLL_DENOM_OFFSET 0x14 + +struct clk_pllv4 { + struct clk_hw hw; + void __iomem *base; +}; + +/* Valid PLL MULT Table */ +static const int pllv4_mult_table[] = {33, 27, 22, 20, 17, 16}; + +#define to_clk_pllv4(__hw) container_of(__hw, struct clk_pllv4, hw) + +#define LOCK_TIMEOUT_US USEC_PER_MSEC + +static inline int clk_pllv4_wait_lock(struct clk_pllv4 *pll) +{ + u32 csr; + + return readl_poll_timeout(pll->base + PLL_CSR_OFFSET, + csr, csr & PLL_VLD, 0, LOCK_TIMEOUT_US); +} + +static int clk_pllv4_is_enabled(struct clk_hw *hw) +{ + struct clk_pllv4 *pll = to_clk_pllv4(hw); + + if (readl_relaxed(pll->base) & PLL_EN) + return 1; + + return 0; +} + +static unsigned long clk_pllv4_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_pllv4 *pll = to_clk_pllv4(hw); + u32 div; + + div = readl_relaxed(pll->base + PLL_CFG_OFFSET); + div &= BM_PLL_MULT; + div >>= BP_PLL_MULT; + + return parent_rate * div; +} + +static long clk_pllv4_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + unsigned long parent_rate = *prate; + unsigned long round_rate, i; + + for (i = 0; i < ARRAY_SIZE(pllv4_mult_table); i++) { + round_rate = parent_rate * pllv4_mult_table[i]; + if (rate >= round_rate) + return round_rate; + } + + return round_rate; +} + +static bool clk_pllv4_is_valid_mult(unsigned int mult) +{ + int i; + + /* check if mult is in valid MULT table */ + for (i = 0; i < ARRAY_SIZE(pllv4_mult_table); i++) { + if (pllv4_mult_table[i] == mult) + return true; + } + + return false; +} + +static int clk_pllv4_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_pllv4 *pll = to_clk_pllv4(hw); + u32 val, mult; + + mult = rate / parent_rate; + + if (!clk_pllv4_is_valid_mult(mult)) + return -EINVAL; + + val = readl_relaxed(pll->base + PLL_CFG_OFFSET); + val &= ~BM_PLL_MULT; + val |= mult << BP_PLL_MULT; + writel_relaxed(val, pll->base + PLL_CFG_OFFSET); + + return 0; +} + +static int clk_pllv4_enable(struct clk_hw *hw) +{ + u32 val; + struct clk_pllv4 *pll = to_clk_pllv4(hw); + + val = readl_relaxed(pll->base); + val |= PLL_EN; + writel_relaxed(val, pll->base); + + return clk_pllv4_wait_lock(pll); +} + +static void clk_pllv4_disable(struct clk_hw *hw) +{ + u32 val; + struct clk_pllv4 *pll = to_clk_pllv4(hw); + + val = readl_relaxed(pll->base); + val &= ~PLL_EN; + writel_relaxed(val, pll->base); +} + +static const struct clk_ops clk_pllv4_ops = { + .recalc_rate = clk_pllv4_recalc_rate, + .round_rate = clk_pllv4_round_rate, + .set_rate = clk_pllv4_set_rate, + .enable = clk_pllv4_enable, + .disable = clk_pllv4_disable, + .is_enabled = clk_pllv4_is_enabled, +}; + +struct clk_hw *imx_clk_pllv4(const char *name, const char *parent_name, + void __iomem *base) +{ + struct clk_pllv4 *pll; + struct clk_hw *hw; + struct clk_init_data init; + int ret; + + pll = kzalloc(sizeof(*pll), GFP_KERNEL); + if (!pll) + return ERR_PTR(-ENOMEM); + + pll->base = base; + + init.name = name; + init.ops = &clk_pllv4_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = CLK_SET_RATE_GATE; + + pll->hw.init = &init; + + hw = &pll->hw; + ret = clk_hw_register(NULL, hw); + if (ret) { + kfree(pll); + hw = ERR_PTR(ret); + } + + return hw; +} diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 8076ec0..2fb4f1d 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -42,6 +42,9 @@ enum imx_pllv3_type { struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name, const char *parent_name, void __iomem *base, u32 div_mask); +struct clk_hw *imx_clk_pllv4(const char *name, const char *parent_name, + void __iomem *base); + struct clk *clk_register_gate2(struct device *dev, const char *name, const char *parent_name, unsigned long flags, void __iomem *reg, u8 bit_idx, u8 cgr_val, From patchwork Sun Oct 21 13:11:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650803 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C260517D4 for ; 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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 4/9] clk: imx: add pfdv2 support Thread-Topic: [PATCH RESEND V4 4/9] clk: imx: add pfdv2 support Thread-Index: AQHUaT+DMHnOMmhFkEyt0Fr+UuotNA== Date: Sun, 21 Oct 2018 13:11:00 +0000 Message-ID: <1540127173-21346-5-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:S38glzR82+wxZjv/jl88gpqx1Xnrj5QhrsoKnq8Qycs+kcDfej6lzjVDDrUu6VJLkbVGUf1XMBqThkuthiIqI9VaKBj4ONpYYyWSQOkhyvDM5z/SzE75vAhK50uDhBeNiPouPdF4/B5dKbjod4uklOrcjUxBcSA5AldRlFq8LBEzXeKWE6j3ou6u7/MO5g+BlnGwlyPo7DSsvzvVL+lThTaqfnFx8g9gt28gZnW17FLBPfoCZJGPdGZDknjEhfOMgcKm9H0MpS2mPY628X4H/AeqR11lAp6DRKiaA60KNZNSjb3O2ubsZ6xhBiAEx6bWEuSpmgScpVo5Q3VgoMgjjZBvP9A344v/V9SHReETCq89Nl7Wrdym/5ru6rg8+7Sb7wqzM5JZaouBG+YntI0xpGJLibNx/Ij/e4MZB7hZTO1B5dHPYzENYyPyxSl+/wuIVfUFrQgCnOzI4JYo8fMUbw==;5:00NqsXOt3s4asXnSFjsZPwqM/VWUOh592B2Qb2G4LCZ4elOK0SvkDT7szpRqy4ylz7U+6yRNC1nSYcBV2dZxaUTxkbzBgnzb1zC2Gp4xcSb97s1imdfQe4o7FEpwKO+N3kvyHwXug/whcRr/XqjbgBvc9tjf7lOaVCSSQren1xw=;7:OhZKqM5Thn9BhjNWxyaIAEsJDL6x7aaMnK08XXrUp91J9LBwhxcEitdlZ76Zc6s1iMeB+ef2ysbC2ZApwJugMlM2c+Z30lMvJgRGTYWBDqDjAxSyjSIC7RuacdSPs0XSnC02qlb7MaZmMuPL1W9ckUv3GiOODfRKrZ7GTqYjLVORG6N4jHANpDNhMvr0wuo9wSlmcSqAQQtpZFDOAuJe/SNBGV/PZWGB1/QWMxXqzKci/nV7RnPMLbVS3uxc9cfz x-ms-office365-filtering-correlation-id: 36a8239d-9d0b-41a2-aaf4-08d63756a57b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; x-ms-traffictypediagnostic: AM0PR04MB4580: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231355)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123562045)(20161123564045)(20161123560045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4580;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4580; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(366004)(346002)(39850400004)(136003)(54534003)(199004)(189003)(476003)(2616005)(11346002)(446003)(66066001)(54906003)(316002)(26005)(52116002)(99286004)(486006)(186003)(7736002)(386003)(6506007)(305945005)(102836004)(105586002)(76176011)(50226002)(86362001)(106356001)(575784001)(256004)(14444005)(81156014)(81166006)(217873002)(8936002)(8676002)(6916009)(5250100002)(25786009)(2900100001)(2501003)(68736007)(71190400001)(2906002)(5660300001)(14454004)(3846002)(4326008)(6116002)(6512007)(53936002)(2351001)(6486002)(36756003)(71200400001)(478600001)(5640700003)(97736004)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4580;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: HKABFTcB/kamfTTiSXmhPYAgCRKrPl2Opzni2xQaU9rsFQH4C9U6sIjZSrFihq4+RgFKg2KUvYaxaIxvgV+joY5Yu/vm6F973b00vN4H4jd0Emr1DB9wt0EFuxJksw0JCxqB5NbhJA8Q06vmYgx711gNCO9BFABovb8XRr/uGYBZ3yNEENXLcR6k5pB3DCePtQeQCCMiG7DaE8jFj7DMvgUXn23FP6LP0i35S8jcxNPAFHgLcMt54QyIvMNERAM9FyjbpdoDENPJq8sYH3EICjTxDwZ3ZRaeHK89siDdeRjTiGlc83PMe5bt/LqhgQ2h0o+oZ+aFHnfieXzi7k8yAuxoE6uJXhdHyNlx4aMLPWQ= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 36a8239d-9d0b-41a2-aaf4-08d63756a57b X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:00.7564 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The pfdv2 is designed for PLL Fractional Divide (PFD) observed in System Clock Generation (SCG) module in IMX ULP SoC series. e.g. i.MX7ULP. NOTE pfdv2 can only be operated when clk is gated. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * no changes v2->v3: * no changes v1->v2: * change to readl_poll_timeout * add pfd lock to protect share reg access between rate and enable/disable operations and multiple pfd instances. * use clk_hw_register --- drivers/clk/imx/Makefile | 3 +- drivers/clk/imx/clk-pfdv2.c | 201 ++++++++++++++++++++++++++++++++++++++++++++ drivers/clk/imx/clk.h | 3 + 3 files changed, 206 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/imx/clk-pfdv2.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index bfe31bf..e5b0d42 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -12,7 +12,8 @@ obj-y += \ clk-pllv2.o \ clk-pllv3.o \ clk-pllv4.o \ - clk-pfd.o + clk-pfd.o \ + clk-pfdv2.o obj-$(CONFIG_SOC_IMX1) += clk-imx1.o obj-$(CONFIG_SOC_IMX21) += clk-imx21.o diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c new file mode 100644 index 0000000..afb2904 --- /dev/null +++ b/drivers/clk/imx/clk-pfdv2.c @@ -0,0 +1,201 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Author: Dong Aisheng + * + */ + +#include +#include +#include +#include + +/** + * struct clk_pfdv2 - IMX PFD clock + * @clk_hw: clock source + * @reg: PFD register address + * @gate_bit: Gate bit offset + * @vld_bit: Valid bit offset + * @frac_off: PLL Fractional Divider offset + */ + +struct clk_pfdv2 { + struct clk_hw hw; + void __iomem *reg; + u8 gate_bit; + u8 vld_bit; + u8 frac_off; +}; + +#define to_clk_pfdv2(_hw) container_of(_hw, struct clk_pfdv2, hw) + +#define CLK_PFDV2_FRAC_MASK 0x3f + +#define LOCK_TIMEOUT_US USEC_PER_MSEC + +static DEFINE_SPINLOCK(pfd_lock); + +static int clk_pfdv2_wait(struct clk_pfdv2 *pfd) +{ + u32 val; + + return readl_poll_timeout(pfd->reg, val, val & pfd->vld_bit, + 0, LOCK_TIMEOUT_US); +} + +static int clk_pfdv2_enable(struct clk_hw *hw) +{ + struct clk_pfdv2 *pfd = to_clk_pfdv2(hw); + unsigned long flags; + u32 val; + + spin_lock_irqsave(&pfd_lock, flags); + val = readl_relaxed(pfd->reg); + val &= ~pfd->gate_bit; + writel_relaxed(val, pfd->reg); + spin_unlock_irqrestore(&pfd_lock, flags); + + return clk_pfdv2_wait(pfd); +} + +static void clk_pfdv2_disable(struct clk_hw *hw) +{ + struct clk_pfdv2 *pfd = to_clk_pfdv2(hw); + unsigned long flags; + u32 val; + + spin_lock_irqsave(&pfd_lock, flags); + val = readl_relaxed(pfd->reg); + val |= pfd->gate_bit; + writel_relaxed(val, pfd->reg); + spin_unlock_irqrestore(&pfd_lock, flags); +} + +static unsigned long clk_pfdv2_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_pfdv2 *pfd = to_clk_pfdv2(hw); + u64 tmp = parent_rate; + u8 frac; + + frac = (readl_relaxed(pfd->reg) >> pfd->frac_off) + & CLK_PFDV2_FRAC_MASK; + + if (!frac) { + pr_debug("clk_pfdv2: %s invalid pfd frac value 0\n", + clk_hw_get_name(hw)); + return 0; + } + + tmp *= 18; + do_div(tmp, frac); + + return tmp; +} + +static long clk_pfdv2_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + u64 tmp = *prate; + u8 frac; + + tmp = tmp * 18 + rate / 2; + do_div(tmp, rate); + frac = tmp; + + if (frac < 12) + frac = 12; + else if (frac > 35) + frac = 35; + + tmp = *prate; + tmp *= 18; + do_div(tmp, frac); + + return tmp; +} + +static int clk_pfdv2_is_enabled(struct clk_hw *hw) +{ + struct clk_pfdv2 *pfd = to_clk_pfdv2(hw); + + if (readl_relaxed(pfd->reg) & pfd->gate_bit) + return 0; + + return 1; +} + +static int clk_pfdv2_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_pfdv2 *pfd = to_clk_pfdv2(hw); + unsigned long flags; + u64 tmp = parent_rate; + u32 val; + u8 frac; + + tmp = tmp * 18 + rate / 2; + do_div(tmp, rate); + frac = tmp; + if (frac < 12) + frac = 12; + else if (frac > 35) + frac = 35; + + spin_lock_irqsave(&pfd_lock, flags); + val = readl_relaxed(pfd->reg); + val &= ~(CLK_PFDV2_FRAC_MASK << pfd->frac_off); + val |= frac << pfd->frac_off; + writel_relaxed(val, pfd->reg); + spin_unlock_irqrestore(&pfd_lock, flags); + + return 0; +} + +static const struct clk_ops clk_pfdv2_ops = { + .enable = clk_pfdv2_enable, + .disable = clk_pfdv2_disable, + .recalc_rate = clk_pfdv2_recalc_rate, + .round_rate = clk_pfdv2_round_rate, + .set_rate = clk_pfdv2_set_rate, + .is_enabled = clk_pfdv2_is_enabled, +}; + +struct clk_hw *imx_clk_pfdv2(const char *name, const char *parent_name, + void __iomem *reg, u8 idx) +{ + struct clk_init_data init; + struct clk_pfdv2 *pfd; + struct clk_hw *hw; + int ret; + + WARN_ON(idx > 3); + + pfd = kzalloc(sizeof(*pfd), GFP_KERNEL); + if (!pfd) + return ERR_PTR(-ENOMEM); + + pfd->reg = reg; + pfd->gate_bit = 1 << ((idx + 1) * 8 - 1); + pfd->vld_bit = pfd->gate_bit - 1; + pfd->frac_off = idx * 8; + + init.name = name; + init.ops = &clk_pfdv2_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = CLK_SET_RATE_GATE; + + pfd->hw.init = &init; + + hw = &pfd->hw; + ret = clk_hw_register(NULL, hw); + if (ret) { + kfree(pfd); + hw = ERR_PTR(ret); + } + + return hw; +} diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 2fb4f1d..a5a9374 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -60,6 +60,9 @@ struct clk *imx_clk_gate_exclusive(const char *name, const char *parent, struct clk *imx_clk_pfd(const char *name, const char *parent_name, void __iomem *reg, u8 idx); +struct clk_hw *imx_clk_pfdv2(const char *name, const char *parent_name, + void __iomem *reg, u8 idx); + struct clk *imx_clk_busy_divider(const char *name, const char *parent_name, void __iomem *reg, u8 shift, u8 width, void __iomem *busy_reg, u8 busy_shift); 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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 5/9] clk: imx: add composite clk support Thread-Topic: [PATCH RESEND V4 5/9] clk: imx: add composite clk support Thread-Index: AQHUaT+FxGL+5syanUWBrgxRcn9DVA== Date: Sun, 21 Oct 2018 13:11:04 +0000 Message-ID: <1540127173-21346-6-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:Qkm812Y9Dq/KqQ8cDfEpIlYLVsRuNuKw0BBPJGibbyZoAS4pgDrj+dWX5k9SSU1/EzLDQzJkQG2IdczoJ0/FvUxhjG2faRYzh8zslY3mfToE6GJtJZeinvxEvcpn/TTyNsoA/4fJynm4W3VRmD157apfjXLWe5bqsBoAhlW0lSh51vZDzKo7mpN0cyVas2VDjRP8FST7sCvQ9FOoGRNLykIA9mpT17iImpn1YuEsPxWHUwX21FjTw+pc+SYx/2SSUCq3bXHXG1v5UtFyqtzx9hF5GL8UHrnbrz5vK2Bw1f1muLaFkWageMQe8QaHy5OfRdj8RbxYss6Cw2YfazGRyrgNh2wjQAqKo0AR9xz+fgAi1vJGdVGMcqwbpIXl5wD931tND3yP/rCOKVR7SWg/2qvcIezvzV9YmZlQ7PCK5I6HiXHbEOF+OINSOYoxFqNG4Mpxp81gKo2NP665uYpzPg==;5:OsawYcg6kmpnbDCSVCu+TR9xqa7+O4cFamp3cvh0EVQaXoU5a2AT/CAYe8adS16j4XoRsfD8fZF+k7oBjKhrSVVSk4Pa7S0avIzJnZICXdWPciN3XNYhXejTg9EmPeIwiwRKDzLxFClRc5JqBl/Kr72MIsTbnTuxez+Po5H4qKA=;7:eApHXeb4CIfGW6Udyzs0/qxOQ8bBYnINGJI/RW9Ro0/l3XR2jciMcj7ZpKL+6uWD6LKvOp33jTGoNU95V3/xvDy9dOEhWdRrM0GmRxR+NixMepW6muTuBDmBvSXS/Pa15mBBRDTYpoJJWyE5a0gDyamBM3wS1Q1hATVTgl+v9SHeJ/0yWuF9ON62xLoSKOQhiCE8UiBo5eRhaSgiyUBiiwoSDwPaSGaTHhwKuYD0IXZW/JNZBgUIssoHU7KKc5ID x-ms-office365-filtering-correlation-id: ef63096d-5627-476a-5331-08d63756a7ec x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; x-ms-traffictypediagnostic: AM0PR04MB4580: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231355)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123562045)(20161123564045)(20161123560045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4580;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4580; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(366004)(346002)(39850400004)(136003)(54534003)(199004)(189003)(476003)(2616005)(11346002)(446003)(66066001)(54906003)(316002)(26005)(52116002)(99286004)(486006)(186003)(7736002)(386003)(6506007)(305945005)(102836004)(105586002)(76176011)(50226002)(86362001)(106356001)(575784001)(256004)(81156014)(81166006)(217873002)(8936002)(8676002)(6916009)(5250100002)(25786009)(2900100001)(2501003)(68736007)(71190400001)(2906002)(5660300001)(14454004)(3846002)(4326008)(6116002)(6512007)(53936002)(2351001)(6486002)(36756003)(71200400001)(478600001)(5640700003)(97736004)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4580;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: XZQJG0usChUvmvcbFyaymau4zOnzVQHLkokl30+EqX2WdEEpYENS5EABaPnBihue08mF+eUNxRJT2HxhYU+jIXcLIsI8kOOXsrt1p+4HaPB0nvvgPt3Lo4Dqx5mJtk6j2+zNbYLSVogCA4VLxNtLar2n3cBPcL7XUxnLS8zgfLkmnWO1wNygfAH8K3fmR2QXWeyanAL2BpxSZWCymgQBCIKcpQCpnjq13t99P5dCXD/9kfjmd9kvylz5W4KHITftvwjlWZ38iAeVlJezkwB+I8cyPUurHrW22RTAmzxhbezXmZlfUG6wASXOgBbdL3Yinu1mA/zzvZ45c32uuiNXJyAv2L3CVWd44IdDO8o5QfY= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: ef63096d-5627-476a-5331-08d63756a7ec X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:04.6626 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The imx composite clk is designed for Peripheral Clock Control (PCC) module observed in IMX ULP SoC series. e.g. i.MX7ULP. NOTE pcc can only be operated when clk is gated. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * no changes v2->v3: * no changes v1->v2: * remove an unneeded blank line change * use clk_hw_register --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-composite.c | 85 +++++++++++++++++++++++++++++++++++++++++ drivers/clk/imx/clk.h | 6 +++ 3 files changed, 92 insertions(+) create mode 100644 drivers/clk/imx/clk-composite.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index e5b0d42..f4da12c 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -4,6 +4,7 @@ obj-y += \ clk.o \ clk-busy.o \ clk-cpu.o \ + clk-composite.o \ clk-fixup-div.o \ clk-fixup-mux.o \ clk-gate-exclusive.o \ diff --git a/drivers/clk/imx/clk-composite.c b/drivers/clk/imx/clk-composite.c new file mode 100644 index 0000000..297974b --- /dev/null +++ b/drivers/clk/imx/clk-composite.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + */ + +#include +#include +#include + +#define PCG_PCS_SHIFT 24 +#define PCG_PCS_MASK 0x7 +#define PCG_CGC_SHIFT 30 +#define PCG_FRAC_SHIFT 3 +#define PCG_FRAC_WIDTH 1 +#define PCG_FRAC_MASK BIT(3) +#define PCG_PCD_SHIFT 0 +#define PCG_PCD_WIDTH 3 +#define PCG_PCD_MASK 0x7 + +struct clk_hw *imx_clk_composite(const char *name, + const char * const *parent_names, + int num_parents, bool mux_present, + bool rate_present, bool gate_present, + void __iomem *reg) +{ + struct clk_hw *mux_hw = NULL, *fd_hw = NULL, *gate_hw = NULL; + struct clk_fractional_divider *fd = NULL; + struct clk_gate *gate = NULL; + struct clk_mux *mux = NULL; + struct clk_hw *hw; + + if (mux_present) { + mux = kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + mux_hw = &mux->hw; + mux->reg = reg; + mux->shift = PCG_PCS_SHIFT; + mux->mask = PCG_PCS_MASK; + } + + if (rate_present) { + fd = kzalloc(sizeof(*fd), GFP_KERNEL); + if (!fd) { + kfree(mux); + return ERR_PTR(-ENOMEM); + } + fd_hw = &fd->hw; + fd->reg = reg; + fd->mshift = PCG_FRAC_SHIFT; + fd->mwidth = PCG_FRAC_WIDTH; + fd->mmask = PCG_FRAC_MASK; + fd->nshift = PCG_PCD_SHIFT; + fd->nwidth = PCG_PCD_WIDTH; + fd->nmask = PCG_PCD_MASK; + fd->flags = CLK_FRAC_DIVIDER_ZERO_BASED; + } + + if (gate_present) { + gate = kzalloc(sizeof(*gate), GFP_KERNEL); + if (!gate) { + kfree(mux); + kfree(fd); + return ERR_PTR(-ENOMEM); + } + gate_hw = &gate->hw; + gate->reg = reg; + gate->bit_idx = PCG_CGC_SHIFT; + } + + hw = clk_hw_register_composite(NULL, name, parent_names, num_parents, + mux_hw, &clk_mux_ops, fd_hw, + &clk_fractional_divider_ops, gate_hw, + &clk_gate_ops, CLK_SET_RATE_GATE | + CLK_SET_PARENT_GATE); + if (IS_ERR(hw)) { + kfree(mux); + kfree(fd); + kfree(gate); + } + + return hw; +} diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index a5a9374..bc43f68 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -71,6 +71,12 @@ struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift, u8 width, void __iomem *busy_reg, u8 busy_shift, const char **parent_names, int num_parents); +struct clk_hw *imx_clk_composite(const char *name, + const char * const *parent_names, + int num_parents, bool mux_present, + bool rate_present, bool gate_present, + void __iomem *reg); + struct clk *imx_clk_fixup_divider(const char *name, const char *parent, void __iomem *reg, u8 shift, u8 width, void (*fixup)(u32 *val)); From patchwork Sun Oct 21 13:11:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650813 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8067790 for ; 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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Rob Herring , Mark Rutland , Stephen Boyd , "devicetree@vger.kernel.org" Subject: [PATCH RESEND V4 6/9] dt-bindings: clock: add imx7ulp clock binding doc Thread-Topic: [PATCH RESEND V4 6/9] dt-bindings: clock: add imx7ulp clock binding doc Thread-Index: AQHUaT+I20/8Q3iJLk2UPqnv4RdOrw== Date: Sun, 21 Oct 2018 13:11:09 +0000 Message-ID: <1540127173-21346-7-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:nL74VvMBFwMod7dZ4Bm3x99FBavITBWJpuR+oq9EbHcOsSnB6s/kd+VJ/eRfe5Rdb/ODU3wEOu6BuoYtzfUgLOqU9md8ZpE26C+TT91PwdM3EPvAwnO5GUNU7Ofb6hQXUYkWrY4KZA5OH1Hi9bj6arn3aDxThyOfaiyn1lAAyd7r0hchGDSfGx08iFrhSXC0AZp23Y0MKAkFOtLwwEFzZjwHCXY4GMdvar7Ag04UaeRwYrM10RCz2hvxfs2SEgxZpKSf5vrDzyvl4sRTfPpbRarMwZML1EoNL5XrUR93vmeHdGa/4gLjNqnGMsZCOHXZrNybn4iyBNiOdn7Udmz2P5ZiP3WYbDbPOkSHKUtctNe4uImX63s/20wI0n/MP39uLKqH0I1pBhqeUUiqbJZAaxsO3SoGbSAb3MJkL16BYnB7Qz3XMHgtCqGw8w2CMFNBOgkxR6eqe3HY5ZJrj4CEMQ==;5:XCIiFKmf7HKpUkw4TLxjYBJT6pQOWKP91RqAZqHeklKdCA+FI4B3o6mvx1vdGRzDDiIR0PVs8H5+DxRfSIoyUeczFJOaW3LeYE9tbfVOSDLsSBv7Xq3pWWEWJRC4lOQBmmnYRKtVuZ5JHkjVg1/AcOphvv8KAsKpXmnD9FWSHAc=;7:c4Q6dXPkKNRY4uqJJVsf4E7quilfdZoleYdXPmnTzMx24oWlQscO+XxomrtV7egyAx0a5P7l6YvZWs3Boh+wxkfCBXuA5RBO1MDcGBAC9XBTAS/s1jeXSH5y2RbN7yFSg0uBMChwxWj2j/p7addkuQWBs1iid7NZs7Sn970z5/EYTbZBxqu5jzhs6LnEXI9Els0+UO80S/si8B3UJwJmbpMCgi9lcPK2zFmXIbuF/fcH4c7TMGjqEOfbr/kry++8 x-ms-office365-filtering-correlation-id: dee27dd7-c598-4485-5980-08d63756aabc x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: 2RbNFn3mjtB1KtLUUI/APj2g6Aw3jBMbkDgqxtE9cKtoOHAeUqJzzS4yV0oFTokj9jFQcxSdbIXJZzD3HecpdWQk8Ylyf6+nl/2QYDxAn5sEBmFPGFMwKcYJuw4r137U4DqBdBd3oB0fHFojAZz6X8u5BH+d42Hx4xVN2+qgBr++Kouou7iKDySUV5e8Iw0WVq9MEcFByViBeqe0xEy06k4l0Co6eqOHNpvoOY90rg4fd2NdBu3/yaJHX09Of2h+N6jmz+ywy3mguGQzwipAE3twuR6SbPEWAScuW4p78JP0dixMFvXOcD2HnOfZMYe61jdCJYS6idGGbU8QykEyq9WgzqfD7iVZQnaPV7whoMA= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: dee27dd7-c598-4485-5980-08d63756aabc X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:09.6001 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP i.MX7ULP Clock functions are under joint control of the System Clock Generation (SCG) modules, Peripheral Clock Control (PCC) modules, and Core Mode Controller (CMC)1 blocks Note IMX7ULP has two clock domains: M4 and A7. This binding doc is only for A7 clock domain. Cc: Rob Herring Cc: Mark Rutland Cc: Stephen Boyd Cc: Michael Turquette Cc: devicetree@vger.kernel.org Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * make scg, pcc separate nodes according to Rob's suggestion v2->v3: * no changes v1->v2: no changes --- .../devicetree/bindings/clock/imx7ulp-clock.txt | 87 ++++++++++++++++ include/dt-bindings/clock/imx7ulp-clock.h | 109 +++++++++++++++++++++ 2 files changed, 196 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/imx7ulp-clock.txt create mode 100644 include/dt-bindings/clock/imx7ulp-clock.h diff --git a/Documentation/devicetree/bindings/clock/imx7ulp-clock.txt b/Documentation/devicetree/bindings/clock/imx7ulp-clock.txt new file mode 100644 index 0000000..2239383 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/imx7ulp-clock.txt @@ -0,0 +1,87 @@ +* Clock bindings for Freescale i.MX7ULP + +i.MX7ULP Clock functions are under joint control of the System +Clock Generation (SCG) modules, Peripheral Clock Control (PCC) +modules, and Core Mode Controller (CMC)1 blocks + +The clocking scheme provides clear separation between M4 domain +and A7 domain. Except for a few clock sources shared between two +domains, such as the System Oscillator clock, the Slow IRC (SIRC), +and and the Fast IRC clock (FIRCLK), clock sources and clock +management are separated and contained within each domain. + +M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules. +A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules. + +Note: this binding doc is only for A7 clock domain. + +System Clock Generation (SCG) modules: +--------------------------------------------------------------------- +The System Clock Generation (SCG) is responsible for clock generation +and distribution across this device. Functions performed by the SCG +include: clock reference selection, generation of clock used to derive +processor, system, peripheral bus and external memory interface clocks, +source selection for peripheral clocks and control of power saving +clock gating mode. + +Required properties: + +- compatible: Should be "fsl,imx7ulp-scg1". +- reg : Should contain registers location and length. +- #clock-cells: Should be <1>. +- clocks: Should contain the fixed input clocks. +- clock-name: Should contain the following clock names:"rosc", "sosc", + "sirc", "firc", "upll", "mpll". + +Peripheral Clock Control (PCC) modules: +--------------------------------------------------------------------- +The Peripheral Clock Control (PCC) is responsible for clock selection, +optional division and clock gating mode for peripherals in their +respected power domain + +Required properties: +- compatible: Should be "fsl,imx7ulp-pcc2" or "fsl,imx7ulp-pcc3". +- reg : Should contain registers location and length. +- #clock-cells: Should be <1>. + +The clock consumer should specify the desired clock by having the clock +ID in its "clocks" phandle cell. +See include/dt-bindings/clock/imx7ulp-clock.h +for the full list of i.MX7ULP clock IDs of each module. + +Examples: + +#include + +scg1: scg1@403e0000 { + compatible = "fsl,imx7ulp-scg1; + reg = <0x403e0000 0x10000>; + clocks = <&rosc>, <&sosc>, <&sirc>, + <&firc>, <&upll>, <&mpll>; + clock-names = "rosc", "sosc", "sirc", + "firc", "upll", "mpll"; + #clock-cells = <1>; +}; + +pcc2: pcc2@403f0000 { + compatible = "fsl,imx7ulp-pcc2"; + reg = <0x403f0000 0x10000>; + #clock-cells = <1>; +}; + +pcc3: pcc3@40b30000 { + compatible = "fsl,imx7ulp-pcc3"; + reg = <0x40b30000 0x10000>; + #clock-cells = <1>; +}; + +usdhc1: usdhc@40380000 { + compatible = "fsl,imx7ulp-usdhc"; + reg = <0x40380000 0x10000>; + interrupts = ; + clocks = <&scg1 IMX7ULP_CLK_NIC1_BUS_DIV>, + <&scg1 IMX7ULP_CLK_NIC1_DIV>, + <&pcc2 IMX7ULP_CLK_USDHC1>; + clock-names ="ipg", "ahb", "per"; + bus-width = <4>; +}; diff --git a/include/dt-bindings/clock/imx7ulp-clock.h b/include/dt-bindings/clock/imx7ulp-clock.h new file mode 100644 index 0000000..008c5ee --- /dev/null +++ b/include/dt-bindings/clock/imx7ulp-clock.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + */ + +#ifndef __DT_BINDINGS_CLOCK_IMX7ULP_H +#define __DT_BINDINGS_CLOCK_IMX7ULP_H + +/* SCG1 */ + +#define IMX7ULP_CLK_DUMMY 0 +#define IMX7ULP_CLK_ROSC 1 +#define IMX7ULP_CLK_SOSC 2 +#define IMX7ULP_CLK_FIRC 3 +#define IMX7ULP_CLK_SPLL_PRE_SEL 4 +#define IMX7ULP_CLK_SPLL_PRE_DIV 5 +#define IMX7ULP_CLK_SPLL 6 +#define IMX7ULP_CLK_SPLL_POST_DIV1 7 +#define IMX7ULP_CLK_SPLL_POST_DIV2 8 +#define IMX7ULP_CLK_SPLL_PFD0 9 +#define IMX7ULP_CLK_SPLL_PFD1 10 +#define IMX7ULP_CLK_SPLL_PFD2 11 +#define IMX7ULP_CLK_SPLL_PFD3 12 +#define IMX7ULP_CLK_SPLL_PFD_SEL 13 +#define IMX7ULP_CLK_SPLL_SEL 14 +#define IMX7ULP_CLK_APLL_PRE_SEL 15 +#define IMX7ULP_CLK_APLL_PRE_DIV 16 +#define IMX7ULP_CLK_APLL 17 +#define IMX7ULP_CLK_APLL_POST_DIV1 18 +#define IMX7ULP_CLK_APLL_POST_DIV2 19 +#define IMX7ULP_CLK_APLL_PFD0 20 +#define IMX7ULP_CLK_APLL_PFD1 21 +#define IMX7ULP_CLK_APLL_PFD2 22 +#define IMX7ULP_CLK_APLL_PFD3 23 +#define IMX7ULP_CLK_APLL_PFD_SEL 24 +#define IMX7ULP_CLK_APLL_SEL 25 +#define IMX7ULP_CLK_UPLL 26 +#define IMX7ULP_CLK_SYS_SEL 27 +#define IMX7ULP_CLK_CORE_DIV 28 +#define IMX7ULP_CLK_BUS_DIV 29 +#define IMX7ULP_CLK_PLAT_DIV 30 +#define IMX7ULP_CLK_DDR_SEL 31 +#define IMX7ULP_CLK_DDR_DIV 32 +#define IMX7ULP_CLK_NIC_SEL 33 +#define IMX7ULP_CLK_NIC0_DIV 34 +#define IMX7ULP_CLK_GPU_DIV 35 +#define IMX7ULP_CLK_NIC1_DIV 36 +#define IMX7ULP_CLK_NIC1_BUS_DIV 37 +#define IMX7ULP_CLK_NIC1_EXT_DIV 38 +#define IMX7ULP_CLK_MIPI_PLL 39 +#define IMX7ULP_CLK_SIRC 40 +#define IMX7ULP_CLK_SOSC_BUS_CLK 41 +#define IMX7ULP_CLK_FIRC_BUS_CLK 42 +#define IMX7ULP_CLK_SPLL_BUS_CLK 43 + +#define IMX7ULP_CLK_SCG1_END 44 + +/* PCC2 */ +#define IMX7ULP_CLK_DMA1 0 +#define IMX7ULP_CLK_RGPIO2P1 1 +#define IMX7ULP_CLK_FLEXBUS 2 +#define IMX7ULP_CLK_SEMA42_1 3 +#define IMX7ULP_CLK_DMA_MUX1 4 +#define IMX7ULP_CLK_SNVS 5 +#define IMX7ULP_CLK_CAAM 6 +#define IMX7ULP_CLK_LPTPM4 7 +#define IMX7ULP_CLK_LPTPM5 8 +#define IMX7ULP_CLK_LPIT1 9 +#define IMX7ULP_CLK_LPSPI2 10 +#define IMX7ULP_CLK_LPSPI3 11 +#define IMX7ULP_CLK_LPI2C4 12 +#define IMX7ULP_CLK_LPI2C5 13 +#define IMX7ULP_CLK_LPUART4 14 +#define IMX7ULP_CLK_LPUART5 15 +#define IMX7ULP_CLK_FLEXIO1 16 +#define IMX7ULP_CLK_USB0 17 +#define IMX7ULP_CLK_USB1 18 +#define IMX7ULP_CLK_USB_PHY 19 +#define IMX7ULP_CLK_USB_PL301 20 +#define IMX7ULP_CLK_USDHC0 21 +#define IMX7ULP_CLK_USDHC1 22 +#define IMX7ULP_CLK_WDG1 23 +#define IMX7ULP_CLK_WDG2 24 + +#define IMX7ULP_CLK_PCC2_END 25 + +/* PCC3 */ +#define IMX7ULP_CLK_LPTPM6 0 +#define IMX7ULP_CLK_LPTPM7 1 +#define IMX7ULP_CLK_LPI2C6 2 +#define IMX7ULP_CLK_LPI2C7 3 +#define IMX7ULP_CLK_LPUART6 4 +#define IMX7ULP_CLK_LPUART7 5 +#define IMX7ULP_CLK_VIU 6 +#define IMX7ULP_CLK_DSI 7 +#define IMX7ULP_CLK_LCDIF 8 +#define IMX7ULP_CLK_MMDC 9 +#define IMX7ULP_CLK_PCTLC 10 +#define IMX7ULP_CLK_PCTLD 11 +#define IMX7ULP_CLK_PCTLE 12 +#define IMX7ULP_CLK_PCTLF 13 +#define IMX7ULP_CLK_GPU3D 14 +#define IMX7ULP_CLK_GPU2D 15 + +#define IMX7ULP_CLK_PCC3_END 16 + +#endif /* __DT_BINDINGS_CLOCK_IMX7ULP_H */ From patchwork Sun Oct 21 13:11:13 2018 Content-Type: text/plain; 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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH RESEND V4 7/9] clk: imx: make mux parent strings const Thread-Topic: [PATCH RESEND V4 7/9] clk: imx: make mux parent strings const Thread-Index: AQHUaT+K0fbQU4I7bkS6Hd/o8cdd7Q== Date: Sun, 21 Oct 2018 13:11:13 +0000 Message-ID: <1540127173-21346-8-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:E7llGSu9cyCtHf+SPxA4Ygb2zaWDBkQf0Ih2ywGAdpAadL/hYUExgijTZ9+xLT+8kKAJTPxVvz/4niGh7kALZAcmhPHSIHyblMC7peUwhTjHYryEIXtQvOeddON99K81+bAyICCQ6Gj/imE9yHlfhOtpiamFqLHBBv5hxlflgb6BhdBK5eMrPuzxuZx8LgacvJoFEM4nuZJxfZYN2kgxqv1JcK+VpDW+4KeunnceyraEvytKjk7nV+yTEwAI3X7HMpEgP4youdISHW8ZJBCybnWfII+GlTmu4bQF081dDmnbxr35txYhYHUsxcAiRKwBhDXiCAAZ15x/X8FZHbFSqlszCE5IQRPCfKturaSFCLjMoSuF3Y9zHapFGm7N8sHRQDixArGYNIUU/kBQncyqkiAg+Y9I8J2vzqwxEoAmsib03W/04UbZLjCC4AUfY9aZDKnscKWg8l3uI0AXuc90kQ==;5:/uf3bKRS/qPvIwUmeBe9CC2wSIZ7QuipvyPIoPHXnqM4C4ftdJhRqhNxKsRminGMVPmjQyYknS7HVy6RpqsUTJpUgDl16Q4hZAR6helIoieA/6AzEZoiJhDd1Lbz1agiUmhIj64zzcKIcHQsmkDkVquxFDUPuMZGlUyKf7lcKHE=;7:Gu36+cVAqmp04w/huFVbS9pRvP/cjYZ+dWMbw+H4hyQednr2o0z2ROsLVaGBJ4/KtxPFF+ZlMbSCbqya7tcvk+I4PKNPAV7UN4plFUy9+KA9JkK3tFl4Tys4DdXULRmGvCn0MNIfnCdocqYkRBZtXSR2prJW5bDu4Cyy2PkqzBKRWqUNGR9XDV6chCyL2aGD1r9Eg88gqA1Uf0A3SMQ1R2/gcOqyTtRtMoiCMAeU7cmB9Cr99ees9BP5xZ4/nBh+ x-ms-office365-filtering-correlation-id: 871e25eb-25e1-49af-8b30-08d63756ad36 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: /WRE+i99e5si+xbsKfY1MaKPTIA0XNhLW9hcEGfPydY7BT2f3mNZq6yDDvL4p9p0JO/jX3cRTd8Y7GMAgkSXl1NlphpxJIRTDX9ixoxRHjHOXZow3AJNNi15haUlWaQNV7SRVJH3dh8wFq5X1Blt/fawtWl0WWMnosNQobW+fBt4Yg55tNWNlRVn4FQcRQV9u3YMYXvjDftOTmIx4q4WEcThRmGU2Ugc1Ruo0a59PyB6y8JcIoXBNY/jHnlv5fjtrXVkmlhbJ1qH/ptWs6rch4gIjijYrqfbJ8IeoBIHoOW+IFnYo6fmaZTFiNu62eiNoDWRf4lwUpsIg2aQK41/QneDByhmd7YhumCUzR2ha/4= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 871e25eb-25e1-49af-8b30-08d63756ad36 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:13.5689 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As the commit 2893c379461a ("clk: make strings in parent name arrays const"), let's make the parent strings const, otherwise we may meet the following warning when compiling: drivers/clk/imx/clk-imx7ulp.c: In function 'imx7ulp_clocks_init': drivers/clk/imx/clk-imx7ulp.c:73:35: warning: passing argument 5 of 'imx_clk_mux_flags' discards 'const' qualifier from pointer target type clks[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); ^ In file included from drivers/clk/imx/clk-imx7ulp.c:23:0: drivers/clk/imx/clk.h:200:27: note: expected 'const char **' but argument is of type 'const char * const*' ... Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Signed-off-by: Dong Aisheng --- ChangeLog: v1->v4: no changes --- drivers/clk/imx/clk-busy.c | 2 +- drivers/clk/imx/clk-fixup-mux.c | 2 +- drivers/clk/imx/clk.h | 18 +++++++++++------- 3 files changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/clk/imx/clk-busy.c b/drivers/clk/imx/clk-busy.c index 9903652..e695622 100644 --- a/drivers/clk/imx/clk-busy.c +++ b/drivers/clk/imx/clk-busy.c @@ -154,7 +154,7 @@ static const struct clk_ops clk_busy_mux_ops = { struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift, u8 width, void __iomem *busy_reg, u8 busy_shift, - const char **parent_names, int num_parents) + const char * const *parent_names, int num_parents) { struct clk_busy_mux *busy; struct clk *clk; diff --git a/drivers/clk/imx/clk-fixup-mux.c b/drivers/clk/imx/clk-fixup-mux.c index c9b327e..44817c1 100644 --- a/drivers/clk/imx/clk-fixup-mux.c +++ b/drivers/clk/imx/clk-fixup-mux.c @@ -70,7 +70,7 @@ static const struct clk_ops clk_fixup_mux_ops = { }; struct clk *imx_clk_fixup_mux(const char *name, void __iomem *reg, - u8 shift, u8 width, const char **parents, + u8 shift, u8 width, const char * const *parents, int num_parents, void (*fixup)(u32 *val)) { struct clk_fixup_mux *fixup_mux; diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index bc43f68..7fca912 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -69,7 +69,7 @@ struct clk *imx_clk_busy_divider(const char *name, const char *parent_name, struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift, u8 width, void __iomem *busy_reg, u8 busy_shift, - const char **parent_names, int num_parents); + const char * const *parent_names, int num_parents); struct clk_hw *imx_clk_composite(const char *name, const char * const *parent_names, @@ -82,7 +82,7 @@ struct clk *imx_clk_fixup_divider(const char *name, const char *parent, void (*fixup)(u32 *val)); struct clk *imx_clk_fixup_mux(const char *name, void __iomem *reg, - u8 shift, u8 width, const char **parents, + u8 shift, u8 width, const char * const *parents, int num_parents, void (*fixup)(u32 *val)); static inline struct clk *imx_clk_fixed(const char *name, int rate) @@ -91,7 +91,8 @@ static inline struct clk *imx_clk_fixed(const char *name, int rate) } static inline struct clk *imx_clk_mux_ldb(const char *name, void __iomem *reg, - u8 shift, u8 width, const char **parents, int num_parents) + u8 shift, u8 width, const char * const *parents, + int num_parents) { return clk_register_mux(NULL, name, parents, num_parents, CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, reg, @@ -204,7 +205,8 @@ static inline struct clk *imx_clk_gate4(const char *name, const char *parent, } static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg, - u8 shift, u8 width, const char **parents, int num_parents) + u8 shift, u8 width, const char * const *parents, + int num_parents) { return clk_register_mux(NULL, name, parents, num_parents, CLK_SET_RATE_NO_REPARENT, reg, shift, @@ -212,7 +214,8 @@ static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg, } static inline struct clk *imx_clk_mux2(const char *name, void __iomem *reg, - u8 shift, u8 width, const char **parents, int num_parents) + u8 shift, u8 width, const char * const *parents, + int num_parents) { return clk_register_mux(NULL, name, parents, num_parents, CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE, @@ -220,8 +223,9 @@ static inline struct clk *imx_clk_mux2(const char *name, void __iomem *reg, } static inline struct clk *imx_clk_mux_flags(const char *name, - void __iomem *reg, u8 shift, u8 width, const char **parents, - int num_parents, unsigned long flags) + void __iomem *reg, u8 shift, u8 width, + const char * const *parents, int num_parents, + unsigned long flags) { return clk_register_mux(NULL, name, parents, num_parents, flags | CLK_SET_RATE_NO_REPARENT, reg, shift, width, 0, From patchwork Sun Oct 21 13:11:17 2018 Content-Type: text/plain; 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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" Subject: [PATCH RESEND V4 8/9] clk: imx: implement new clk_hw based APIs Thread-Topic: [PATCH RESEND V4 8/9] clk: imx: implement new clk_hw based APIs Thread-Index: AQHUaT+NZo5TTqpOaEC5sONxzw120A== Date: Sun, 21 Oct 2018 13:11:17 +0000 Message-ID: <1540127173-21346-9-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:9RwwNoNxco8xyvqWK6DvMsHvz/qNsfu06hjlJM303zdF53UtIHH4CBwFfV4iLXVV6TWB9TMacNJoTcG0A1L5ur9ijqkmV+sLInrZ/ugVMofRixa3ylKS/acv2Uz+bqmJrgH5KysejIODcP4JLGmZ/3W77JU+EBnqdcpi0sBhZUz6/yES4bXOqA3+bvPt6pP9iGDbQ5EKdzCsy8mQ/kJbzf7gsGECWsQrIMgIKO7G5mNczX47d2e2XuOTzFfdXlj75UrHbPeloKcZT/3jvwmkPP+Opz8WA1jcSoY/G5un69cJmdbVj7QeAqesxP1QFxvOQaFvkkpIeufDoWQ6/9SxPTqrE3gebA8OdKECNNQdphke5piCs84VkfPskXMv4HngIHth3zhGnlr3LVC+bIU2a0q6CNPPI+9BPylnIrWE+XZt4xQ0sJyETksoKk+wVlsptNxTfpgDAic9eOF96oTOZw==;5:WzPZ/Mn/3vaJeTeEKksmE4MC2O8hH5GT1Ig7qdzXTg/RBv+VVZgB2B8wqHtwAcbG/6xNJlQf78spm1UJVPOJ3OVI/RdIXmynmXx6HMkuX9ntIaRUJ4gWc2oJEZyZIyjC1ehqahzWpC9ItZ6CDvfWkDaMXKeZo5KSUeibNUqYPVo=;7:rNIoJ05DA8t6l9QAlax72IYROT6xLPCt0fK9QBV/0etQJJRJo1s4jzW/kmhindxdtfSHVGOvToMQlka07+MudXiD4OqZAMFeqk/JFEHIyRjOYgKFPMBcd33ckT6ofl9hyESFYo7nLJndz5jGm1gvciobC4dfkWBRKefklKBr7vfLMtMRlFRIvh+BbYPgYXRgFym936z9m4WMdQFefw9eqvtcQJeM6slJzdQXi7VvFTlKOSL1zHCSW42R82GJi3Gj x-ms-office365-filtering-correlation-id: 7ac7bc46-0de9-4b5c-5d56-08d63756af70 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; x-ms-traffictypediagnostic: AM0PR04MB4580: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231355)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123562045)(20161123564045)(20161123560045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4580;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4580; x-forefront-prvs: 083289FD26 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(366004)(346002)(39850400004)(136003)(54534003)(199004)(189003)(476003)(2616005)(11346002)(446003)(66066001)(54906003)(316002)(26005)(52116002)(99286004)(486006)(186003)(7736002)(386003)(6506007)(305945005)(102836004)(105586002)(76176011)(50226002)(86362001)(106356001)(256004)(14444005)(81156014)(81166006)(217873002)(8936002)(8676002)(6916009)(5250100002)(25786009)(2900100001)(2501003)(68736007)(71190400001)(2906002)(5660300001)(14454004)(3846002)(4326008)(6116002)(6512007)(53936002)(2351001)(6486002)(36756003)(71200400001)(478600001)(5640700003)(97736004)(6436002);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4580;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: X6YSlSGUverZHUcVRRAp4lkc5ywo55FpB0ed3CPtfap0jhmVwobKscBLifadHypFoTLQRtEpuG0oIuyhFW64Tp5kHc12QNBASZ1Gcm1gkI7ctRx6reJNgp9YPZGTag33eed18lIuSx6UEA/6jQYsLrbIR8SA+LpqFf4dXtAKtKDyH/k3r5SzbaTrojPSTT3ueP9otCCN7Aks9yiW4wCz+EuI2B43N9lZzojCgRZUZEy5oJsTAjEWTE9rdFQWzXnjzi/1U+Z277eUhFCUlTdqN6Kcb7UVFAkT4A7e1ky/i0Uo+TbTerI+iIZ2Nm0wBH/7vpcd4BGkrylRiQjyZVE59qaOErrd4OFRLsguh1ZoIbY= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7ac7bc46-0de9-4b5c-5d56-08d63756af70 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:17.2408 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Clock providers are recommended to use the new struct clk_hw based API, so implement IMX clk_hw based provider helpers functions to the new approach. Signed-off-by: Dong Aisheng --- ChangeLog: v2->v4: * no changes v1->v2: new patches --- drivers/clk/imx/clk.c | 22 ++++++++++++++++++ drivers/clk/imx/clk.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 84 insertions(+) diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c index 9074e69..1efed86 100644 --- a/drivers/clk/imx/clk.c +++ b/drivers/clk/imx/clk.c @@ -18,6 +18,16 @@ void __init imx_check_clocks(struct clk *clks[], unsigned int count) i, PTR_ERR(clks[i])); } +void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count) +{ + unsigned int i; + + for (i = 0; i < count; i++) + if (IS_ERR(clks[i])) + pr_err("i.MX clk %u: register failed with %ld\n", + i, PTR_ERR(clks[i])); +} + static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name) { struct of_phandle_args phandle; @@ -49,6 +59,18 @@ struct clk * __init imx_obtain_fixed_clock( return clk; } +struct clk_hw * __init imx_obtain_fixed_clk_hw(struct device_node *np, + const char *name) +{ + struct clk *clk; + + clk = of_clk_get_by_name(np, name); + if (IS_ERR(clk)) + return ERR_PTR(-ENOENT); + + return __clk_get_hw(clk); +} + /* * This fixups the register CCM_CSCMR1 write value. * The write/read/divider values of the aclk_podf field diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 7fca912..d3fcaa5 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -8,6 +8,7 @@ extern spinlock_t imx_ccm_lock; void imx_check_clocks(struct clk *clks[], unsigned int count); +void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count); void imx_register_uart_clocks(struct clk ** const clks[]); extern void imx_cscmr1_fixup(u32 *val); @@ -54,6 +55,9 @@ struct clk *clk_register_gate2(struct device *dev, const char *name, struct clk * imx_obtain_fixed_clock( const char *name, unsigned long rate); +struct clk_hw *imx_obtain_fixed_clk_hw(struct device_node *np, + const char *name); + struct clk *imx_clk_gate_exclusive(const char *name, const char *parent, void __iomem *reg, u8 shift, u32 exclusive_mask); @@ -90,6 +94,16 @@ static inline struct clk *imx_clk_fixed(const char *name, int rate) return clk_register_fixed_rate(NULL, name, NULL, 0, rate); } +static inline struct clk_hw *imx_clk_hw_fixed(const char *name, int rate) +{ + return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate); +} + +static inline struct clk_hw *imx_get_clk_hw_fixed(const char *name, int rate) +{ + return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate); +} + static inline struct clk *imx_clk_mux_ldb(const char *name, void __iomem *reg, u8 shift, u8 width, const char * const *parents, int num_parents) @@ -113,6 +127,15 @@ static inline struct clk *imx_clk_divider(const char *name, const char *parent, reg, shift, width, 0, &imx_ccm_lock); } +static inline struct clk_hw *imx_clk_hw_divider(const char *name, + const char *parent, + void __iomem *reg, u8 shift, + u8 width) +{ + return clk_hw_register_divider(NULL, name, parent, CLK_SET_RATE_PARENT, + reg, shift, width, 0, &imx_ccm_lock); +} + static inline struct clk *imx_clk_divider_flags(const char *name, const char *parent, void __iomem *reg, u8 shift, u8 width, unsigned long flags) @@ -121,6 +144,15 @@ static inline struct clk *imx_clk_divider_flags(const char *name, reg, shift, width, 0, &imx_ccm_lock); } +static inline struct clk_hw *imx_clk_hw_divider_flags(const char *name, + const char *parent, + void __iomem *reg, u8 shift, + u8 width, unsigned long flags) +{ + return clk_hw_register_divider(NULL, name, parent, flags, + reg, shift, width, 0, &imx_ccm_lock); +} + static inline struct clk *imx_clk_divider2(const char *name, const char *parent, void __iomem *reg, u8 shift, u8 width) { @@ -143,6 +175,13 @@ static inline struct clk *imx_clk_gate_flags(const char *name, const char *paren shift, 0, &imx_ccm_lock); } +static inline struct clk_hw *imx_clk_hw_gate(const char *name, const char *parent, + void __iomem *reg, u8 shift) +{ + return clk_hw_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg, + shift, 0, &imx_ccm_lock); +} + static inline struct clk *imx_clk_gate_dis(const char *name, const char *parent, void __iomem *reg, u8 shift) { @@ -222,6 +261,17 @@ static inline struct clk *imx_clk_mux2(const char *name, void __iomem *reg, reg, shift, width, 0, &imx_ccm_lock); } +static inline struct clk_hw *imx_clk_hw_mux2(const char *name, void __iomem *reg, + u8 shift, u8 width, + const char * const *parents, + int num_parents) +{ + return clk_hw_register_mux(NULL, name, parents, num_parents, + CLK_SET_RATE_NO_REPARENT | + CLK_OPS_PARENT_ENABLE, + reg, shift, width, 0, &imx_ccm_lock); +} + static inline struct clk *imx_clk_mux_flags(const char *name, void __iomem *reg, u8 shift, u8 width, const char * const *parents, int num_parents, @@ -232,6 +282,18 @@ static inline struct clk *imx_clk_mux_flags(const char *name, &imx_ccm_lock); } +static inline struct clk_hw *imx_clk_hw_mux_flags(const char *name, + void __iomem *reg, u8 shift, + u8 width, + const char * const *parents, + int num_parents, + unsigned long flags) +{ + return clk_hw_register_mux(NULL, name, parents, num_parents, + flags | CLK_SET_RATE_NO_REPARENT, + reg, shift, width, 0, &imx_ccm_lock); +} + struct clk *imx_clk_cpu(const char *name, const char *parent_name, struct clk *div, struct clk *mux, struct clk *pll, struct clk *step); From patchwork Sun Oct 21 13:11:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Aisheng X-Patchwork-Id: 10650807 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3C26190 for ; 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Dong" , Stephen Boyd Subject: [PATCH RESEND V4 9/9] clk: imx: add imx7ulp clk driver Thread-Topic: [PATCH RESEND V4 9/9] clk: imx: add imx7ulp clk driver Thread-Index: AQHUaT+PCtHidXZsE0Wxw2Rsecz0Iw== Date: Sun, 21 Oct 2018 13:11:21 +0000 Message-ID: <1540127173-21346-10-git-send-email-aisheng.dong@nxp.com> References: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1540127173-21346-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0034.apcprd01.prod.exchangelabs.com (2603:1096:203:3e::22) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4580;6:AmSetI16Msa0j4y4ceeus/KNhAPZRRHZ6gqKNGvVz5YmdUhpuJvzmmCWngbGltTnWds/k/za9yumV4spY6xy04cZnj+Eau4nrPq2BvFf3HnpCy3HPWZTwHHBZaukyBPuLZ6trXGfTH2IftJaj2Cvc/5xMa7VzWB45/StA7afKpUVlcPPSjIEFFXhHw9EC/nxrQKpKLVlCwuSY1VXy9262ifJLW9bydfpCWAfy/3/OUWvUozvhosWKmmMuiaS14Bhkp0T7pR6XfukrVkdkSrouwhR/UopB5eaPNbHvHOJtKReUkM11dxHzDWj/Ts8Yue56j+ZXJf/+si8Wyt3iWBLSe1Ng+GQpDGBiTUbY1zDWfli2L8SBXk1a/b6FsAUb35DF5R/ifwq/YxcTWeyxkNLK4p6Uz2EmKvwre82ZnkFZAa5vnLaVpUiaw1ujLvGgSCdBKu/zBfJLqjPFmm5ZwjdKQ==;5:wDOJB9UP+CGbJSCCNNqtTRXHUXok5XZeZ5ncxIBWHC/mYBdc16EnIfgg9KRFBL+vJug3QpVKuwLCD7RprEgfDG78feHNWw/9vYABEEKYOY70qc4CY0DfhkGzwUkGEdDWIrz6ZYJOxIVLTHUkeoaJOrM0W2sWr3X9iHEJZ97vZC8=;7:zWnwk2shj5Xias9C/l0xVunJ8BuR+nJ1SYpjpf6AehZjnlR/yHnHPciRWV7QFK/5zN3XWVAhDO5v/AVkGpxy8rHXDHbX68R9JmlfKgcC8mHrQ/3nk1lga0s2ug/jqXHIOngaCEaoHQnDQfNfLMsZquwa5DD6a6ji147KmZiKknohoi6Oed/g2GSHbmJ2ce9KGVKl5g56hAFkwNDEx2dxRH/MBNMtReD+a5NNShAEFYQ1ZI3h+YfF86PqLzmZsQxn x-ms-office365-filtering-correlation-id: f98f6af6-050d-4623-6953-08d63756b1c4 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4580; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: QabbukhgLnHQJdwosrzfPUzHkNHFUdbZPEtecsvVVM50R99WylwTiZ8b0lUjAaKOKeh8H172lCTXeHQqNa4qsPTXyiSSmrCOnEmIiyEjRDp0u3Xd/PyVKO1+m4KtKtXGIJHQ4/tfX7RZb5uZDbJHxb6wvXWhryn4J6bTe1EP0Jr8vAleko+RgHDbMvVw+NjteOmnICCncLnL17uLRNqZD24rPPGe7NikdbrWGoLo6m5AnBhzCOmnzDnkh1O/H5xzYYIGTCTJueWPfMVP3Zde/equxiJ1NbGfEmPZNiU0h4KT9GWH46R+qP6DLMSyU0yCkki0svkQw2IN8ZryoRQIuozLU6WY03gv79jhMfbl0JE= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: f98f6af6-050d-4623-6953-08d63756b1c4 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Oct 2018 13:11:21.2564 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4580 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP i.MX7ULP Clock functions are under joint control of the System Clock Generation (SCG) modules, Peripheral Clock Control (PCC) modules, and Core Mode Controller (CMC)1 blocks The clocking scheme provides clear separation between M4 domain and A7 domain. Except for a few clock sources shared between two domains, such as the System Oscillator clock, the Slow IRC (SIRC), and and the Fast IRC clock (FIRCLK), clock sources and clock management are separated and contained within each domain. M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules. A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules. This driver only adds clock support in A7 domain. Note that most clocks required to be operated when gated, e.g. pll, pfd, pcc. And more special cases that scs/ddr/nic mux selecting different clock source requires that clock to be enabled first, then we need set CLK_OPS_PARENT_ENABLE flag for them properly. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v3->v4: * update after changing scg and pcc into separete nodes according to Rob's suggestion v2->v3: * no changes v1->v2: * use of_clk_add_hw_provider instead * split the clocks register process into two parts: early part for possible timers clocks registered by CLK_OF_DECLARE_DRIVER and the later part for the left normal peripheral clocks registered by a platform driver. --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-imx7ulp.c | 209 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 210 insertions(+) create mode 100644 drivers/clk/imx/clk-imx7ulp.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index f4da12c..983c0a5 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -29,4 +29,5 @@ obj-$(CONFIG_SOC_IMX6SLL) += clk-imx6sll.o obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o obj-$(CONFIG_SOC_IMX6UL) += clk-imx6ul.o obj-$(CONFIG_SOC_IMX7D) += clk-imx7d.o +obj-$(CONFIG_SOC_IMX7ULP) += clk-imx7ulp.o obj-$(CONFIG_SOC_VF610) += clk-vf610.o diff --git a/drivers/clk/imx/clk-imx7ulp.c b/drivers/clk/imx/clk-imx7ulp.c new file mode 100644 index 0000000..33dedca --- /dev/null +++ b/drivers/clk/imx/clk-imx7ulp.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Author: Dong Aisheng + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "clk.h" + +static const char * const pll_pre_sels[] = { "sosc", "firc", }; +static const char * const spll_pfd_sels[] = { "spll_pfd0", "spll_pfd1", "spll_pfd2", "spll_pfd3", }; +static const char * const spll_sels[] = { "spll", "spll_pfd_sel", }; +static const char * const apll_pfd_sels[] = { "apll_pfd0", "apll_pfd1", "apll_pfd2", "apll_pfd3", }; +static const char * const apll_sels[] = { "apll", "apll_pfd_sel", }; +static const char * const scs_sels[] = { "dummy", "sosc", "sirc", "firc", "dummy", "apll_sel", "spll_sel", "upll", }; +static const char * const ddr_sels[] = { "apll_pfd_sel", "upll", }; +static const char * const nic_sels[] = { "firc", "ddr_clk", }; +static const char * const periph_plat_sels[] = { "dummy", "nic1_bus_clk", "nic1_clk", "ddr_clk", "apll_pfd2", "apll_pfd1", "apll_pfd0", "upll", }; +static const char * const periph_bus_sels[] = { "dummy", "sosc_bus_clk", "mpll", "firc_bus_clk", "rosc", "nic1_bus_clk", "nic1_clk", "spll_bus_clk", }; + +static void __init imx7ulp_clk_scg1_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_SCG1_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_SCG1_END; + clks = clk_data->hws; + + clks[IMX7ULP_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0); + + clks[IMX7ULP_CLK_ROSC] = imx_obtain_fixed_clk_hw(np, "rosc"); + clks[IMX7ULP_CLK_SOSC] = imx_obtain_fixed_clk_hw(np, "sosc"); + clks[IMX7ULP_CLK_SIRC] = imx_obtain_fixed_clk_hw(np, "sirc"); + clks[IMX7ULP_CLK_FIRC] = imx_obtain_fixed_clk_hw(np, "firc"); + clks[IMX7ULP_CLK_MIPI_PLL] = imx_obtain_fixed_clk_hw(np, "mpll"); + clks[IMX7ULP_CLK_UPLL] = imx_obtain_fixed_clk_hw(np, "upll"); + + /* SCG1 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + /* NOTE: xPLL config can't be changed when xPLL is enabled */ + clks[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_hw_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_SEL] = imx_clk_hw_mux_flags("spll_pre_sel", base + 0x608, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE); + + /* name parent_name reg shift width flags */ + clks[IMX7ULP_CLK_APLL_PRE_DIV] = imx_clk_hw_divider_flags("apll_pre_div", "apll_pre_sel", base + 0x508, 8, 3, CLK_SET_RATE_GATE); + clks[IMX7ULP_CLK_SPLL_PRE_DIV] = imx_clk_hw_divider_flags("spll_pre_div", "spll_pre_sel", base + 0x608, 8, 3, CLK_SET_RATE_GATE); + + /* name parent_name base */ + clks[IMX7ULP_CLK_APLL] = imx_clk_pllv4("apll", "apll_pre_div", base + 0x500); + clks[IMX7ULP_CLK_SPLL] = imx_clk_pllv4("spll", "spll_pre_div", base + 0x600); + + /* APLL PFDs */ + clks[IMX7ULP_CLK_APLL_PFD0] = imx_clk_pfdv2("apll_pfd0", "apll", base + 0x50c, 0); + clks[IMX7ULP_CLK_APLL_PFD1] = imx_clk_pfdv2("apll_pfd1", "apll", base + 0x50c, 1); + clks[IMX7ULP_CLK_APLL_PFD2] = imx_clk_pfdv2("apll_pfd2", "apll", base + 0x50c, 2); + clks[IMX7ULP_CLK_APLL_PFD3] = imx_clk_pfdv2("apll_pfd3", "apll", base + 0x50c, 3); + + /* SPLL PFDs */ + clks[IMX7ULP_CLK_SPLL_PFD0] = imx_clk_pfdv2("spll_pfd0", "spll", base + 0x60C, 0); + clks[IMX7ULP_CLK_SPLL_PFD1] = imx_clk_pfdv2("spll_pfd1", "spll", base + 0x60C, 1); + clks[IMX7ULP_CLK_SPLL_PFD2] = imx_clk_pfdv2("spll_pfd2", "spll", base + 0x60C, 2); + clks[IMX7ULP_CLK_SPLL_PFD3] = imx_clk_pfdv2("spll_pfd3", "spll", base + 0x60C, 3); + + /* PLL Mux */ + clks[IMX7ULP_CLK_APLL_PFD_SEL] = imx_clk_hw_mux_flags("apll_pfd_sel", base + 0x508, 14, 2, apll_pfd_sels, ARRAY_SIZE(apll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_PFD_SEL] = imx_clk_hw_mux_flags("spll_pfd_sel", base + 0x608, 14, 2, spll_pfd_sels, ARRAY_SIZE(spll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_APLL_SEL] = imx_clk_hw_mux_flags("apll_sel", base + 0x508, 1, 1, apll_sels, ARRAY_SIZE(apll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + clks[IMX7ULP_CLK_SPLL_SEL] = imx_clk_hw_mux_flags("spll_sel", base + 0x608, 1, 1, spll_sels, ARRAY_SIZE(spll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE); + + clks[IMX7ULP_CLK_SPLL_BUS_CLK] = clk_hw_register_divider(NULL, "spll_bus_clk", "spll_sel", CLK_SET_RATE_GATE, base + 0x604, 8, 3, CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ZERO_GATE, &imx_ccm_lock); + + /* scs/ddr/nic select different clock source requires that clock to be enabled first */ + clks[IMX7ULP_CLK_SYS_SEL] = imx_clk_hw_mux2("scs_sel", base + 0x14, 24, 4, scs_sels, ARRAY_SIZE(scs_sels)); + clks[IMX7ULP_CLK_NIC_SEL] = imx_clk_hw_mux2("nic_sel", base + 0x40, 28, 1, nic_sels, ARRAY_SIZE(nic_sels)); + clks[IMX7ULP_CLK_DDR_SEL] = imx_clk_hw_mux_flags("ddr_sel", base + 0x30, 24, 1, ddr_sels, ARRAY_SIZE(ddr_sels), CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE); + + clks[IMX7ULP_CLK_CORE_DIV] = imx_clk_hw_divider_flags("divcore", "scs_sel", base + 0x14, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_DDR_DIV] = clk_hw_register_divider(NULL, "ddr_clk", "ddr_sel", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, base + 0x30, 0, 3, + CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ZERO_GATE, &imx_ccm_lock); + + clks[IMX7ULP_CLK_NIC0_DIV] = imx_clk_hw_divider_flags("nic0_clk", "nic_sel", base + 0x40, 24, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_DIV] = imx_clk_hw_divider_flags("nic1_clk", "nic0_clk", base + 0x40, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + clks[IMX7ULP_CLK_NIC1_BUS_DIV] = imx_clk_hw_divider_flags("nic1_bus_clk", "nic1_clk", base + 0x40, 4, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL); + + clks[IMX7ULP_CLK_GPU_DIV] = imx_clk_hw_divider("gpu_clk", "nic0_clk", base + 0x40, 20, 4); + + clks[IMX7ULP_CLK_SOSC_BUS_CLK] = clk_hw_register_divider(NULL, "sosc_bus_clk", "sosc", 0, base + 0x104, 8, 3, + CLK_DIVIDER_READ_ONLY | CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ZERO_GATE, &imx_ccm_lock); + clks[IMX7ULP_CLK_FIRC_BUS_CLK] = clk_hw_register_divider(NULL, "firc_bus_clk", "firc", 0, base + 0x304, 8, 3, + CLK_DIVIDER_READ_ONLY | CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ZERO_GATE, &imx_ccm_lock); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_scg1, "fsl,imx7ulp-scg1", imx7ulp_clk_scg1_init); + +static void __init imx7ulp_clk_pcc2_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_SCG1_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC2_END; + clks = clk_data->hws; + + /* PCC2 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_DMA1] = imx_clk_hw_gate("dma1", "nic1_clk", base + 0x20, 30); + clks[IMX7ULP_CLK_RGPIO2P1] = imx_clk_hw_gate("rgpio2p1", "nic1_bus_clk", base + 0x3c, 30); + clks[IMX7ULP_CLK_DMA_MUX1] = imx_clk_hw_gate("dma_mux1", "nic1_bus_clk", base + 0x84, 30); + clks[IMX7ULP_CLK_SNVS] = imx_clk_hw_gate("snvs", "nic1_bus_clk", base + 0x8c, 30); + clks[IMX7ULP_CLK_CAAM] = imx_clk_hw_gate("caam", "nic1_clk", base + 0x90, 30); + clks[IMX7ULP_CLK_LPTPM4] = imx_clk_composite("lptpm4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPTPM5] = imx_clk_composite("lptpm5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPIT1] = imx_clk_composite("lpit1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_LPSPI2] = imx_clk_composite("lpspi2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa4); + clks[IMX7ULP_CLK_LPSPI3] = imx_clk_composite("lpspi3", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa8); + clks[IMX7ULP_CLK_LPI2C4] = imx_clk_composite("lpi2c4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xac); + clks[IMX7ULP_CLK_LPI2C5] = imx_clk_composite("lpi2c5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb0); + clks[IMX7ULP_CLK_LPUART4] = imx_clk_composite("lpuart4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb4); + clks[IMX7ULP_CLK_LPUART5] = imx_clk_composite("lpuart5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb8); + clks[IMX7ULP_CLK_FLEXIO1] = imx_clk_composite("flexio1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xc4); + clks[IMX7ULP_CLK_USB0] = imx_clk_composite("usb0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xcc); + clks[IMX7ULP_CLK_USB1] = imx_clk_composite("usb1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xd0); + clks[IMX7ULP_CLK_USB_PHY] = imx_clk_hw_gate("usb_phy", "nic1_bus_clk", base + 0xd4, 30); + clks[IMX7ULP_CLK_USDHC0] = imx_clk_composite("usdhc0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xdc); + clks[IMX7ULP_CLK_USDHC1] = imx_clk_composite("usdhc1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xe0); + clks[IMX7ULP_CLK_WDG1] = imx_clk_composite("wdg1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xf4); + clks[IMX7ULP_CLK_WDG2] = imx_clk_composite("sdg2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0x10c); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc2, "fsl,imx7ulp-pcc2", imx7ulp_clk_pcc2_init); + +static void __init imx7ulp_clk_pcc3_init(struct device_node *np) +{ + struct clk_hw_onecell_data *clk_data; + struct clk_hw **clks; + void __iomem *base; + + clk_data = kzalloc(sizeof(*clk_data) + sizeof(*clk_data->hws) * + IMX7ULP_CLK_SCG1_END, GFP_KERNEL); + if (!clk_data) + return; + + clk_data->num = IMX7ULP_CLK_PCC3_END; + clks = clk_data->hws; + + /* PCC3 */ + base = of_iomap(np, 0); + WARN_ON(!base); + + clks[IMX7ULP_CLK_LPTPM6] = imx_clk_composite("lptpm6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x84); + clks[IMX7ULP_CLK_LPTPM7] = imx_clk_composite("lptpm7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x88); + + clks[IMX7ULP_CLK_MMDC] = clk_hw_register_gate(NULL, "mmdc", "nic1_clk", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, + base + 0xac, 30, 0, &imx_ccm_lock); + clks[IMX7ULP_CLK_LPI2C6] = imx_clk_composite("lpi2c6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x90); + clks[IMX7ULP_CLK_LPI2C7] = imx_clk_composite("lpi2c7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94); + clks[IMX7ULP_CLK_LPUART6] = imx_clk_composite("lpuart6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98); + clks[IMX7ULP_CLK_LPUART7] = imx_clk_composite("lpuart7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c); + clks[IMX7ULP_CLK_DSI] = imx_clk_composite("dsi", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xa4); + clks[IMX7ULP_CLK_LCDIF] = imx_clk_composite("lcdif", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xa8); + + clks[IMX7ULP_CLK_VIU] = imx_clk_hw_gate("viu", "nic1_clk", base + 0xa0, 30); + clks[IMX7ULP_CLK_PCTLC] = imx_clk_hw_gate("pctlc", "nic1_bus_clk", base + 0xb8, 30); + clks[IMX7ULP_CLK_PCTLD] = imx_clk_hw_gate("pctld", "nic1_bus_clk", base + 0xbc, 30); + clks[IMX7ULP_CLK_PCTLE] = imx_clk_hw_gate("pctle", "nic1_bus_clk", base + 0xc0, 30); + clks[IMX7ULP_CLK_PCTLF] = imx_clk_hw_gate("pctlf", "nic1_bus_clk", base + 0xc4, 30); + + clks[IMX7ULP_CLK_GPU3D] = imx_clk_composite("gpu3d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x140); + clks[IMX7ULP_CLK_GPU2D] = imx_clk_composite("gpu2d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x144); + + imx_check_clk_hws(clks, clk_data->num); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); +} +CLK_OF_DECLARE(imx7ulp_clk_pcc3, "fsl,imx7ulp-pcc3", imx7ulp_clk_pcc3_init);