From patchwork Fri Sep 9 12:31:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971690 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B8D4ECAAD3 for ; Fri, 9 Sep 2022 12:31:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229811AbiIIMbz (ORCPT ); Fri, 9 Sep 2022 08:31:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55820 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229589AbiIIMbz (ORCPT ); Fri, 9 Sep 2022 08:31:55 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB5C998347; Fri, 9 Sep 2022 05:31:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726713; x=1694262713; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=J/KA5IP1P64+fZAZNeRF2iSfGho/kaCFDpeCMd5oTCw=; b=gWSzOfBEY8cbq6DbLiev1iDui6FQuNsjQr/gApGI7YevLh2+V7+WQDD3 y2fXnjO6gIk/TqHc3YVchsaqr/W77rtufCWTS1BKwvyFFzFsc1SRBJMPE AS9jOXzhjEYMlG1wkORdT1792KRE8YT9tdk+TAcBO+Zwxa1UgjuDO+9zs gBI3jLrRNqpX1WdznMqXKF3s9DIFa4Gd2ZWq/l9Iv7deZSTpeeDQ02nb7 wnaBNvSkt2FK+LgGZM8XCGMtJ8I6EGeo2ugGJZhnAurjcz4f3B218gPpE x3oR+A2YBfJpeZOs4Tx7GA3+Kd16fvTe1wGtozcjzKN8jvBSw+p846VVd A==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399082" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:31:51 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:31:49 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:31:46 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , , "Nathan Chancellor" Subject: [PATCH v5 01/14] clk: microchip: mpfs: fix clk_cfg array bounds violation Date: Fri, 9 Sep 2022 13:31:10 +0100 Message-ID: <20220909123123.2699583-2-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org There is an array bounds violation present during clock registration, triggered by current code by only specific toolchains. This seems to fail gracefully in v6.0-rc1, using a toolchain build from the riscv- gnu-toolchain repo and with clang-15, and life carries on. While converting the driver to use standard clock structs/ops, kernel panics were seen during boot when built with clang-15: [ 0.581754] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b1 [ 0.591520] Oops [#1] [ 0.594045] Modules linked in: [ 0.597435] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc1-00011-g8e1459cf4eca #1 [ 0.606188] Hardware name: Microchip PolarFire-SoC Icicle Kit (DT) [ 0.613012] epc : __clk_register+0x4a6/0x85c [ 0.617759] ra : __clk_register+0x49e/0x85c [ 0.622489] epc : ffffffff803faf7c ra : ffffffff803faf74 sp : ffffffc80400b720 [ 0.630466] gp : ffffffff810e93f8 tp : ffffffe77fe60000 t0 : ffffffe77ffb3800 [ 0.638443] t1 : 000000000000000a t2 : ffffffffffffffff s0 : ffffffc80400b7c0 [ 0.646420] s1 : 0000000000000001 a0 : 0000000000000001 a1 : 0000000000000000 [ 0.654396] a2 : 0000000000000001 a3 : 0000000000000000 a4 : 0000000000000000 [ 0.662373] a5 : ffffffff803a5810 a6 : 0000000200000022 a7 : 0000000000000006 [ 0.670350] s2 : ffffffff81099d48 s3 : ffffffff80d6e28e s4 : 0000000000000028 [ 0.678327] s5 : ffffffff810ed3c8 s6 : ffffffff810ed3d0 s7 : ffffffe77ffbc100 [ 0.686304] s8 : ffffffe77ffb1540 s9 : ffffffe77ffb1540 s10: 0000000000000008 [ 0.694281] s11: 0000000000000000 t3 : 00000000000000c6 t4 : 0000000000000007 [ 0.702258] t5 : ffffffff810c78c0 t6 : ffffffe77ff88cd0 [ 0.708125] status: 0000000200000120 badaddr: 00000000000000b1 cause: 000000000000000d [ 0.716869] [] devm_clk_hw_register+0x62/0xaa [ 0.723420] [] mpfs_clk_probe+0x1e0/0x244 In v6.0-rc1 and later, this issue is visible without the follow on patches doing the conversion using toolchains provided by our Yocto meta layer too. It fails on "clk_periph_timer" - which uses a different parent, that it tries to find using the macro: \#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT].cfg.hw) If parent is RTCREF, so the macro becomes: &mpfs_cfg_clks[33].cfg.hw which is well beyond the end of the array. Amazingly, builds with GCC 11.1 see no problem here, booting correctly and hooking the parent up etc. Builds with clang-15 do not, with the above panic. Change the macro to use specific offsets depending on the parent rather than the dt-binding's clock IDs. Fixes: 1c6a7ea32b8c ("clk: microchip: mpfs: add RTCREF clock control") CC: Nathan Chancellor Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 070c3b896559..f0f9c9a1cc48 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -239,6 +239,11 @@ static const struct clk_ops mpfs_clk_cfg_ops = { .hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_cfg_ops, 0), \ } +#define CLK_CPU_OFFSET 0u +#define CLK_AXI_OFFSET 1u +#define CLK_AHB_OFFSET 2u +#define CLK_RTCREF_OFFSET 3u + static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { CLK_CFG(CLK_CPU, "clk_cpu", "clk_msspll", 0, 2, mpfs_div_cpu_axi_table, 0, REG_CLOCK_CONFIG_CR), @@ -362,7 +367,7 @@ static const struct clk_ops mpfs_periph_clk_ops = { _flags), \ } -#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT].hw) +#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].hw) /* * Critical clocks: From patchwork Fri Sep 9 12:31:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971692 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EAC9C6FA8D for ; Fri, 9 Sep 2022 12:31:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231304AbiIIMb5 (ORCPT ); Fri, 9 Sep 2022 08:31:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230369AbiIIMb4 (ORCPT ); Fri, 9 Sep 2022 08:31:56 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57648115CF2; Fri, 9 Sep 2022 05:31:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726715; x=1694262715; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=lXPkkFRkwRKsafp6HGuDBA/9P2HFxXAmTgbrhhm4Y/M=; b=iinYBrm7m1kbds6aBGbfonvwfg7cUMiqR+b/p48OS+nXIEzvY3CXiBDN /H2Q/HsSkE4P1V+z4fWrnjtnRWVlC6vW+AdRcLRpA9JvNIVU/iGXSMnBV MUUZN0cU4uVPyEoCj+zfFBH+QrrXPWvZNX4i/2rhI2bcSzB5/IFijTRq5 NTN+JN25HadL4Lj4hrS1A4rGE2Q5fCDBH6AAblUutQEBAF2AAXSN3Mc1n JIKae6BqUYBXg+7QlzL0XDjy9BBUPCZvl4XghdFbKrdLxZye494u4c8PV aD97J5MeKS78yniLmSeLK9MHUEuAk4+vD68Oz6ny4KcAPPe+eXwvVDDOM w==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399131" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:31:54 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:31:51 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:31:49 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 02/14] clk: microchip: mpfs: make the rtc's ahb clock critical Date: Fri, 9 Sep 2022 13:31:11 +0100 Message-ID: <20220909123123.2699583-3-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The onboard RTC's AHB bus clock must be kept running as the RTC will stop & lose track of time if the AHB interface clock is disabled. Fixes: 635e5e73370e ("clk: microchip: Add driver for Microchip PolarFire SoC") Signed-off-by: Conor Dooley --- drivers/clk/microchip/clk-mpfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index f0f9c9a1cc48..b6b89413e090 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -375,6 +375,8 @@ static const struct clk_ops mpfs_periph_clk_ops = { * trap handler * - CLK_MMUART0: reserved by the hss * - CLK_DDRC: provides clock to the ddr subsystem + * - CLK_RTC: the onboard RTC's AHB bus clock must be kept running as the rtc will stop + * if the AHB interface clock is disabled * - CLK_FICx: these provide the processor side clocks to the "FIC" (Fabric InterConnect) * clock domain crossers which provide the interface to the FPGA fabric. Disabling them * causes the FPGA fabric to go into reset. @@ -399,7 +401,7 @@ static struct mpfs_periph_hw_clock mpfs_periph_clks[] = { CLK_PERIPH(CLK_CAN0, "clk_periph_can0", PARENT_CLK(AHB), 14, 0), CLK_PERIPH(CLK_CAN1, "clk_periph_can1", PARENT_CLK(AHB), 15, 0), CLK_PERIPH(CLK_USB, "clk_periph_usb", PARENT_CLK(AHB), 16, 0), - CLK_PERIPH(CLK_RTC, "clk_periph_rtc", PARENT_CLK(AHB), 18, 0), + CLK_PERIPH(CLK_RTC, "clk_periph_rtc", PARENT_CLK(AHB), 18, CLK_IS_CRITICAL), CLK_PERIPH(CLK_QSPI, "clk_periph_qspi", PARENT_CLK(AHB), 19, 0), CLK_PERIPH(CLK_GPIO0, "clk_periph_gpio0", PARENT_CLK(AHB), 20, 0), CLK_PERIPH(CLK_GPIO1, "clk_periph_gpio1", PARENT_CLK(AHB), 21, 0), From patchwork Fri Sep 9 12:31:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971693 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18C19C6FA82 for ; Fri, 9 Sep 2022 12:32:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231342AbiIIMb6 (ORCPT ); Fri, 9 Sep 2022 08:31:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231318AbiIIMb5 (ORCPT ); Fri, 9 Sep 2022 08:31:57 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DED881153BC; Fri, 9 Sep 2022 05:31:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726716; x=1694262716; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fdjX5tbqzbcZLdj3QtoTUweKd5AlbElmyy/Hw5S6d5w=; b=kPlT1ON6KFmry5RPSYUf0gKzEFb97vvVlxq9lf/iAozE4CeRBq56worJ ioAPO1aX6u7sdkP9boNEnKOwH6EeiOd/OoSEngPjOFBUu4BqkYxgVmN+G 7IWQeoKDxiNbMQyKvhNvMET940pBb/74qqZKjqvWw/WvfMSdQ2vBEZ3hB 1hyeYSeAYOrtdwB3/8Pezzqfncjov8bUe9m37cUx8XPp3iZXY7WUweDzM koUmSjOxPJ6ehDWyRbOv+9oEDbyuWbnD3f+lTpc0lHzQJPsZf1OebVTp+ 9iZJ2ev+rGwmnbm4CalsvP/Ema55W3qlkZjStFuZDFjbnUce41xuACwmv g==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399164" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:31:56 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:31:54 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:31:52 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , , "Rob Herring" Subject: [PATCH v5 03/14] dt-bindings: clk: microchip: mpfs: add reset controller support Date: Fri, 9 Sep 2022 13:31:12 +0100 Message-ID: <20220909123123.2699583-4-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The "peripheral" devices on PolarFire SoC can be put into reset, so update the device tree binding to reflect the presence of a reset controller. Reviewed-by: Rob Herring Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley --- .../bindings/clock/microchip,mpfs.yaml | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml b/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml index 016a4f378b9b..1d0b6a4fda42 100644 --- a/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml +++ b/Documentation/devicetree/bindings/clock/microchip,mpfs.yaml @@ -40,8 +40,21 @@ properties: const: 1 description: | The clock consumer should specify the desired clock by having the clock - ID in its "clocks" phandle cell. See include/dt-bindings/clock/microchip,mpfs-clock.h - for the full list of PolarFire clock IDs. + ID in its "clocks" phandle cell. + See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of + PolarFire clock IDs. + + resets: + maxItems: 1 + + '#reset-cells': + description: + The AHB/AXI peripherals on the PolarFire SoC have reset support, so from + CLK_ENVM to CLK_CFM. The reset consumer should specify the desired + peripheral via the clock ID in its "resets" phandle cell. + See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of + PolarFire clock IDs. + const: 1 required: - compatible From patchwork Fri Sep 9 12:31:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971694 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5120DECAAD3 for ; Fri, 9 Sep 2022 12:32:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231451AbiIIMcC (ORCPT ); Fri, 9 Sep 2022 08:32:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55870 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231359AbiIIMb7 (ORCPT ); Fri, 9 Sep 2022 08:31:59 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52ABC116B44; Fri, 9 Sep 2022 05:31:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726718; x=1694262718; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/RQAm65qsO4QbfEkCk+3QcWiZOWF0FpBMYsFKX4IjVs=; b=Sz/+wn4T2PoDzJNnmwheB3egccVPjQtJJNtJ559dtZsaT4Z4LL5yyr8C RnvgMedkTuWnHLFLCuBl9obOxFgCMqYNnKy0u7FO4u0oBHNB+W1BO4YdH Dox6yd7+XDVn9AcC3OFa10762mUyDpKuMRUf8eE2H4zMCZVC2lGPUfCxD lcQaFan5J1NV2rPDe5EvOIN5xlx1wiOT+wLZZwG/ESzVOjnCjGrbdHkku PuCaxnPFAGpkPSAgiU5wFiHh0id+uYTvNGRR7yzg9xK++YX/Oasm49h6V 6/1M64myAeQw4yEmPjuE3bal/tKcA5TT2JUyRGZnzOozcUydRb8Bvx9CQ w==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399174" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:31:57 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:31:57 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:31:54 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 04/14] clk: microchip: mpfs: add reset controller Date: Fri, 9 Sep 2022 13:31:13 +0100 Message-ID: <20220909123123.2699583-5-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add a reset controller to PolarFire SoC's clock driver. This reset controller is registered as an aux device and read/write functions exported to the drivers namespace so that the reset controller can access the peripheral device reset register. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/Kconfig | 1 + drivers/clk/microchip/clk-mpfs.c | 110 +++++++++++++++++++++++++++---- include/soc/microchip/mpfs.h | 8 +++ 3 files changed, 107 insertions(+), 12 deletions(-) diff --git a/drivers/clk/microchip/Kconfig b/drivers/clk/microchip/Kconfig index a5a99873c4f5..b46e864b3bd8 100644 --- a/drivers/clk/microchip/Kconfig +++ b/drivers/clk/microchip/Kconfig @@ -6,5 +6,6 @@ config COMMON_CLK_PIC32 config MCHP_CLK_MPFS bool "Clk driver for PolarFire SoC" depends on (RISCV && SOC_MICROCHIP_POLARFIRE) || COMPILE_TEST + select AUXILIARY_BUS help Supports Clock Configuration for PolarFire SoC diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index b6b89413e090..610c81ecc526 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -3,12 +3,14 @@ * Daire McNamara, * Copyright (C) 2020 Microchip Technology Inc. All rights reserved. */ +#include #include #include #include #include #include #include +#include /* address offset of control registers */ #define REG_MSSPLL_REF_CR 0x08u @@ -28,6 +30,7 @@ #define MSSPLL_FIXED_DIV 4u struct mpfs_clock_data { + struct device *dev; void __iomem *base; void __iomem *msspll_base; struct clk_hw_onecell_data hw_data; @@ -307,10 +310,6 @@ static int mpfs_periph_clk_enable(struct clk_hw *hw) spin_lock_irqsave(&mpfs_clk_lock, flags); - reg = readl_relaxed(base_addr + REG_SUBBLK_RESET_CR); - val = reg & ~(1u << periph->shift); - writel_relaxed(val, base_addr + REG_SUBBLK_RESET_CR); - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); val = reg | (1u << periph->shift); writel_relaxed(val, base_addr + REG_SUBBLK_CLOCK_CR); @@ -344,12 +343,9 @@ static int mpfs_periph_clk_is_enabled(struct clk_hw *hw) void __iomem *base_addr = periph_hw->sys_base; u32 reg; - reg = readl_relaxed(base_addr + REG_SUBBLK_RESET_CR); - if ((reg & (1u << periph->shift)) == 0u) { - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); - if (reg & (1u << periph->shift)) - return 1; - } + reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + if (reg & (1u << periph->shift)) + return 1; return 0; } @@ -445,6 +441,94 @@ static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_c return 0; } +/* + * Peripheral clock resets + */ + +#if IS_ENABLED(CONFIG_RESET_CONTROLLER) + +u32 mpfs_reset_read(struct device *dev) +{ + struct mpfs_clock_data *clock_data = dev_get_drvdata(dev->parent); + + return readl_relaxed(clock_data->base + REG_SUBBLK_RESET_CR); +} +EXPORT_SYMBOL_NS_GPL(mpfs_reset_read, MCHP_CLK_MPFS); + +void mpfs_reset_write(struct device *dev, u32 val) +{ + struct mpfs_clock_data *clock_data = dev_get_drvdata(dev->parent); + + writel_relaxed(val, clock_data->base + REG_SUBBLK_RESET_CR); +} +EXPORT_SYMBOL_NS_GPL(mpfs_reset_write, MCHP_CLK_MPFS); + +static void mpfs_reset_unregister_adev(void *_adev) +{ + struct auxiliary_device *adev = _adev; + + auxiliary_device_delete(adev); +} + +static void mpfs_reset_adev_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + + auxiliary_device_uninit(adev); + + kfree(adev); +} + +static struct auxiliary_device *mpfs_reset_adev_alloc(struct mpfs_clock_data *clk_data) +{ + struct auxiliary_device *adev; + int ret; + + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return ERR_PTR(-ENOMEM); + + adev->name = "reset-mpfs"; + adev->dev.parent = clk_data->dev; + adev->dev.release = mpfs_reset_adev_release; + adev->id = 666u; + + ret = auxiliary_device_init(adev); + if (ret) { + kfree(adev); + return ERR_PTR(ret); + } + + return adev; +} + +static int mpfs_reset_controller_register(struct mpfs_clock_data *clk_data) +{ + struct auxiliary_device *adev; + int ret; + + adev = mpfs_reset_adev_alloc(clk_data); + if (IS_ERR(adev)) + return PTR_ERR(adev); + + ret = auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(clk_data->dev, mpfs_reset_unregister_adev, adev); +} + +#else /* !CONFIG_RESET_CONTROLLER */ + +static int mpfs_reset_controller_register(struct mpfs_clock_data *clk_data) +{ + return 0; +} + +#endif /* !CONFIG_RESET_CONTROLLER */ + static int mpfs_clk_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -469,6 +553,8 @@ static int mpfs_clk_probe(struct platform_device *pdev) return PTR_ERR(clk_data->msspll_base); clk_data->hw_data.num = num_clks; + clk_data->dev = dev; + dev_set_drvdata(dev, clk_data); ret = mpfs_clk_register_mssplls(dev, mpfs_msspll_clks, ARRAY_SIZE(mpfs_msspll_clks), clk_data); @@ -488,14 +574,14 @@ static int mpfs_clk_probe(struct platform_device *pdev) if (ret) return ret; - return ret; + return mpfs_reset_controller_register(clk_data); } static const struct of_device_id mpfs_clk_of_match_table[] = { { .compatible = "microchip,mpfs-clkcfg", }, {} }; -MODULE_DEVICE_TABLE(of, mpfs_clk_match_table); +MODULE_DEVICE_TABLE(of, mpfs_clk_of_match_table); static struct platform_driver mpfs_clk_driver = { .probe = mpfs_clk_probe, diff --git a/include/soc/microchip/mpfs.h b/include/soc/microchip/mpfs.h index 6466515262bd..f916dcde457f 100644 --- a/include/soc/microchip/mpfs.h +++ b/include/soc/microchip/mpfs.h @@ -40,4 +40,12 @@ struct mpfs_sys_controller *mpfs_sys_controller_get(struct device *dev); #endif /* if IS_ENABLED(CONFIG_POLARFIRE_SOC_SYS_CTRL) */ +#if IS_ENABLED(CONFIG_MCHP_CLK_MPFS) + +u32 mpfs_reset_read(struct device *dev); + +void mpfs_reset_write(struct device *dev, u32 val); + +#endif /* if IS_ENABLED(CONFIG_MCHP_CLK_MPFS) */ + #endif /* __SOC_MPFS_H__ */ From patchwork Fri Sep 9 12:31:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971695 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BF84ECAAA1 for ; Fri, 9 Sep 2022 12:32:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231548AbiIIMcG (ORCPT ); Fri, 9 Sep 2022 08:32:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231496AbiIIMcD (ORCPT ); Fri, 9 Sep 2022 08:32:03 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A807C11779E; Fri, 9 Sep 2022 05:32:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726721; x=1694262721; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ZelFCOozMZ04HIL0HnLE7UPW8i4M2uEzSe0mhE5piAs=; b=dLbOn2+dn7IgEKopzAEEVQgBZg9F5iTqCOj5h/3Sua7ptZ0xQomvoC+J C6wjVmIVWiUHkiB7xl0wtsbbp+6nTYye6ol7TDJctbpXzyfpfU7vtqRkR 4F8EWQHT2bBfe1hzHaVrCgvcXNNIjb0wNfMJIXanAkjPVEN0/FTWtCmFe yGKIiwcjTbI5isqkJdAckRyxsa7A8F55DI5J3PYrD+OBpT6SjSBtunNO+ nUSXguqa+zk086XiuGntysFpKmoxZ3ubN3KZCZ7iB1ndygEmh9N1qliIS tmXeOAq10PkDod/HVcrBuXt55didvFkNK1vgCA13U1axbaVG9rMe4sQO8 A==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="190137476" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:00 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:00 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:31:57 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , , "Philipp Zabel" Subject: [PATCH v5 05/14] reset: add polarfire soc reset support Date: Fri, 9 Sep 2022 13:31:14 +0100 Message-ID: <20220909123123.2699583-6-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add support for the resets on Microchip's PolarFire SoC (MPFS). Reset control is a single register, wedged in between registers for clock control. To fit with existed DT etc, the reset controller is created using the aux device framework & set up in the clock driver. Reviewed-by: Philipp Zabel Acked-by: Philipp Zabel Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/reset/Kconfig | 7 ++ drivers/reset/Makefile | 2 +- drivers/reset/reset-mpfs.c | 157 +++++++++++++++++++++++++++++++++++++ 3 files changed, 165 insertions(+), 1 deletion(-) create mode 100644 drivers/reset/reset-mpfs.c diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 806773e88832..85f7abde3766 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -152,6 +152,13 @@ config RESET_PISTACHIO help This enables the reset driver for ImgTec Pistachio SoCs. +config RESET_POLARFIRE_SOC + bool "Microchip PolarFire SoC (MPFS) Reset Driver" + depends on AUXILIARY_BUS && MCHP_CLK_MPFS + default MCHP_CLK_MPFS + help + This driver supports peripheral reset for the Microchip PolarFire SoC + config RESET_QCOM_AOSS tristate "Qcom AOSS Reset Driver" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index cd5cf8e7c6a7..3e7e5fd633a8 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o obj-$(CONFIG_RESET_NPCM) += reset-npcm.o obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o +obj-$(CONFIG_RESET_POLARFIRE_SOC) += reset-mpfs.o obj-$(CONFIG_RESET_QCOM_AOSS) += reset-qcom-aoss.o obj-$(CONFIG_RESET_QCOM_PDC) += reset-qcom-pdc.o obj-$(CONFIG_RESET_RASPBERRYPI) += reset-raspberrypi.o @@ -40,4 +41,3 @@ obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o obj-$(CONFIG_RESET_UNIPHIER_GLUE) += reset-uniphier-glue.o obj-$(CONFIG_RESET_ZYNQ) += reset-zynq.o obj-$(CONFIG_ARCH_ZYNQMP) += reset-zynqmp.o - diff --git a/drivers/reset/reset-mpfs.c b/drivers/reset/reset-mpfs.c new file mode 100644 index 000000000000..e003e50590ec --- /dev/null +++ b/drivers/reset/reset-mpfs.c @@ -0,0 +1,157 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PolarFire SoC (MPFS) Peripheral Clock Reset Controller + * + * Author: Conor Dooley + * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries. + * + */ +#include +#include +#include +#include +#include +#include +#include + +/* + * The ENVM reset is the lowest bit in the register & I am using the CLK_FOO + * defines in the dt to make things easier to configure - so this is accounting + * for the offset of 3 there. + */ +#define MPFS_PERIPH_OFFSET CLK_ENVM +#define MPFS_NUM_RESETS 30u +#define MPFS_SLEEP_MIN_US 100 +#define MPFS_SLEEP_MAX_US 200 + +/* block concurrent access to the soft reset register */ +static DEFINE_SPINLOCK(mpfs_reset_lock); + +/* + * Peripheral clock resets + */ + +static int mpfs_assert(struct reset_controller_dev *rcdev, unsigned long id) +{ + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&mpfs_reset_lock, flags); + + reg = mpfs_reset_read(rcdev->dev); + reg |= BIT(id); + mpfs_reset_write(rcdev->dev, reg); + + spin_unlock_irqrestore(&mpfs_reset_lock, flags); + + return 0; +} + +static int mpfs_deassert(struct reset_controller_dev *rcdev, unsigned long id) +{ + unsigned long flags; + u32 reg; + + spin_lock_irqsave(&mpfs_reset_lock, flags); + + reg = mpfs_reset_read(rcdev->dev); + reg &= ~BIT(id); + mpfs_reset_write(rcdev->dev, reg); + + spin_unlock_irqrestore(&mpfs_reset_lock, flags); + + return 0; +} + +static int mpfs_status(struct reset_controller_dev *rcdev, unsigned long id) +{ + u32 reg = mpfs_reset_read(rcdev->dev); + + /* + * It is safe to return here as MPFS_NUM_RESETS makes sure the sign bit + * is never hit. + */ + return (reg & BIT(id)); +} + +static int mpfs_reset(struct reset_controller_dev *rcdev, unsigned long id) +{ + mpfs_assert(rcdev, id); + + usleep_range(MPFS_SLEEP_MIN_US, MPFS_SLEEP_MAX_US); + + mpfs_deassert(rcdev, id); + + return 0; +} + +static const struct reset_control_ops mpfs_reset_ops = { + .reset = mpfs_reset, + .assert = mpfs_assert, + .deassert = mpfs_deassert, + .status = mpfs_status, +}; + +static int mpfs_reset_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + unsigned int index = reset_spec->args[0]; + + /* + * CLK_RESERVED does not map to a clock, but it does map to a reset, + * so it has to be accounted for here. It is the reset for the fabric, + * so if this reset gets called - do not reset it. + */ + if (index == CLK_RESERVED) { + dev_err(rcdev->dev, "Resetting the fabric is not supported\n"); + return -EINVAL; + } + + if (index < MPFS_PERIPH_OFFSET || index >= (MPFS_PERIPH_OFFSET + rcdev->nr_resets)) { + dev_err(rcdev->dev, "Invalid reset index %u\n", index); + return -EINVAL; + } + + return index - MPFS_PERIPH_OFFSET; +} + +static int mpfs_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct device *dev = &adev->dev; + struct reset_controller_dev *rcdev; + + rcdev = devm_kzalloc(dev, sizeof(*rcdev), GFP_KERNEL); + if (!rcdev) + return -ENOMEM; + + rcdev->dev = dev; + rcdev->dev->parent = dev->parent; + rcdev->ops = &mpfs_reset_ops; + rcdev->of_node = dev->parent->of_node; + rcdev->of_reset_n_cells = 1; + rcdev->of_xlate = mpfs_reset_xlate; + rcdev->nr_resets = MPFS_NUM_RESETS; + + return devm_reset_controller_register(dev, rcdev); +} + +static const struct auxiliary_device_id mpfs_reset_ids[] = { + { + .name = "clk_mpfs.reset-mpfs", + }, + { } +}; +MODULE_DEVICE_TABLE(auxiliary, mpfs_reset_ids); + +static struct auxiliary_driver mpfs_reset_driver = { + .probe = mpfs_reset_probe, + .id_table = mpfs_reset_ids, +}; + +module_auxiliary_driver(mpfs_reset_driver); + +MODULE_DESCRIPTION("Microchip PolarFire SoC Reset Driver"); +MODULE_AUTHOR("Conor Dooley "); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(MCHP_CLK_MPFS); From patchwork Fri Sep 9 12:31:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971696 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6AE0EC6FA8A for ; Fri, 9 Sep 2022 12:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231344AbiIIMcT (ORCPT ); Fri, 9 Sep 2022 08:32:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231359AbiIIMcP (ORCPT ); Fri, 9 Sep 2022 08:32:15 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D99EC1153BC; Fri, 9 Sep 2022 05:32:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726731; x=1694262731; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7t9fB7n5BXz/TvDnDRUyp7NhU4pUYNzktSxEQMgJVzo=; b=AWSSw2JqZsyTZBxYmYU4PBxpGqr05Ze2pjyGfAho9i/U34JCV+tCLnhq aEw8oOujl6F6jmDQ5WRMG5lGz4GHfhJsKOMYQx4RwB5avC6DVyEWr67nu MUKlPwxW5e8JdY8w4Rmaqw5OvovEKr02LvIQ724I+GAXVYOGO5SOCikiT VIzde8eeO4Fp95gux6scA6/jFwuMuYhf5YSFHk4Xiz9H/mXgOKvRdCAva NIx5ztJxPjep7tCN0JGrjC/gne1IVvWz91JQM4ySWAGX0tYZ3nf4rti9J Q/sLMSMYJ0jy8qM3qi9NBceUszBZM16poyyPWSbeCJ9+4BjHQHxjDz5wb g==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399234" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:10 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:03 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:00 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 06/14] MAINTAINERS: add polarfire soc reset controller Date: Fri, 9 Sep 2022 13:31:15 +0100 Message-ID: <20220909123123.2699583-7-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add the newly added reset controller for the PolarFire SoC (MPFS) to the existing MAINTAINERS entry. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 8a5012ba6ff9..6136b1b22e2c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17532,6 +17532,7 @@ F: drivers/char/hw_random/mpfs-rng.c F: drivers/clk/microchip/clk-mpfs.c F: drivers/mailbox/mailbox-mpfs.c F: drivers/pci/controller/pcie-microchip-host.c +F: drivers/reset/reset-mpfs.c F: drivers/rtc/rtc-mpfs.c F: drivers/soc/microchip/ F: drivers/spi/spi-microchip-core.c From patchwork Fri Sep 9 12:31:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971699 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2091C6FA86 for ; Fri, 9 Sep 2022 12:32:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231753AbiIIMcY (ORCPT ); Fri, 9 Sep 2022 08:32:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231635AbiIIMcP (ORCPT ); Fri, 9 Sep 2022 08:32:15 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8CE0117493; Fri, 9 Sep 2022 05:32:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726733; x=1694262733; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=22sX6hdQWVNBlKUnAfqAl8ZrlZKUVg33klYFVGAaHB0=; b=E/7M/QRgpdsHoI3y1Ga9XHTYgFhoVVy6xcqF20bbmKNse43FUOd+SEkQ 6lL5XjbYqsEWmRlhMQYXvDRrYuBoPPY44POkURHy4fzUFytPsMDhtGaI4 Tz2VicMCyQVLm8PHyB3vjDi2lcQSLI6cQ54EYS6e/TodnndaTlwvEBX8C fAc4cAJHtU0s26/erj+HzhS0cFmZU3B8OpEzkqKLLM3Q1EnDUuIwBUZaN 7UAF0iLbczu7SVZjjLeaVrsqD4M12IvZOrsPuztp1rlj2vUw9XxGgq7TZ xj/1W5cnbgR4PQSX2LRGZdCIRABEiBzzlWZ2KC4rUthLb26u8HC+6zcRe w==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="173130618" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:12 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:06 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:03 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 07/14] riscv: dts: microchip: add mpfs specific macb reset support Date: Fri, 9 Sep 2022 13:31:16 +0100 Message-ID: <20220909123123.2699583-8-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The macb on PolarFire SoC has reset support which the generic compatible does not use. Add the newly introduced MPFS specific compatible as the primary compatible to avail of this support & wire up the reset to the clock controllers devicetree entry. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley --- arch/riscv/boot/dts/microchip/mpfs.dtsi | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi index 499c2e63ad35..ae5839534d9c 100644 --- a/arch/riscv/boot/dts/microchip/mpfs.dtsi +++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi @@ -234,6 +234,7 @@ clkcfg: clkcfg@20002000 { reg = <0x0 0x20002000 0x0 0x1000>, <0x0 0x3E001000 0x0 0x1000>; clocks = <&refclk>; #clock-cells = <1>; + #reset-cells = <1>; }; mmuart0: serial@20000000 { @@ -383,7 +384,7 @@ can1: can@2010d000 { }; mac0: ethernet@20110000 { - compatible = "cdns,macb"; + compatible = "microchip,mpfs-macb", "cdns,macb"; reg = <0x0 0x20110000 0x0 0x2000>; #address-cells = <1>; #size-cells = <0>; @@ -392,11 +393,12 @@ mac0: ethernet@20110000 { local-mac-address = [00 00 00 00 00 00]; clocks = <&clkcfg CLK_MAC0>, <&clkcfg CLK_AHB>; clock-names = "pclk", "hclk"; + resets = <&clkcfg CLK_MAC0>; status = "disabled"; }; mac1: ethernet@20112000 { - compatible = "cdns,macb"; + compatible = "microchip,mpfs-macb", "cdns,macb"; reg = <0x0 0x20112000 0x0 0x2000>; #address-cells = <1>; #size-cells = <0>; @@ -405,6 +407,7 @@ mac1: ethernet@20112000 { local-mac-address = [00 00 00 00 00 00]; clocks = <&clkcfg CLK_MAC1>, <&clkcfg CLK_AHB>; clock-names = "pclk", "hclk"; + resets = <&clkcfg CLK_MAC1>; status = "disabled"; }; From patchwork Fri Sep 9 12:31:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971697 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C576BC6FA8B for ; Fri, 9 Sep 2022 12:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231694AbiIIMcU (ORCPT ); Fri, 9 Sep 2022 08:32:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231631AbiIIMcP (ORCPT ); Fri, 9 Sep 2022 08:32:15 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AABF11C7CD; Fri, 9 Sep 2022 05:32:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726731; x=1694262731; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+IIVc307auJRgXB9wfntqv2uBJ0XjYajuLGf8lU3Pmg=; b=G3uTYS9NqWIrUGmMZGk5NRHs6itPGvV/ex0dljtsiYHAPa2OqL3erNtd f1OZb0BrJmzmZ4tDfRAyUWB3B57z2N0bYWC/PUJvf1eaqc7/qQZIbvTFK cQ15LaZ0LxFEM5pmzigjPxIetr3jJMtJd2/tcc7t7/k6UP4fuLn+KqMTH ek0wBaGez0Celi/DQFveyWI/Sx7tRL2LAhRk73GNymJfcjHz69QVoU9cs YtvrbDLY21fnbsintEToDb6GKTQmokxv18kyGFkpX8S9Hi41Wqhnbx/jB bIQcBqqfShsuXXSeBvCFY99wfkEWLCO9j//aOzpxN04afAyz3sM1wsSOh g==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="112926442" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:10 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:09 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:06 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 08/14] clk: microchip: mpfs: add MSS pll's set & round rate Date: Fri, 9 Sep 2022 13:31:17 +0100 Message-ID: <20220909123123.2699583-9-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The MSS pll is not a fixed frequency clock, so add set() & round_rate() support. Control is limited to a 7 bit output divider as other devices on the FPGA occupy the other three outputs of the PLL & prevent changing the multiplier. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 54 ++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 610c81ecc526..f40d22293539 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -129,8 +129,62 @@ static unsigned long mpfs_clk_msspll_recalc_rate(struct clk_hw *hw, unsigned lon return prate * mult / (ref_div * MSSPLL_FIXED_DIV * postdiv); } +static long mpfs_clk_msspll_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) +{ + struct mpfs_msspll_hw_clock *msspll_hw = to_mpfs_msspll_clk(hw); + void __iomem *mult_addr = msspll_hw->base + msspll_hw->reg_offset; + void __iomem *ref_div_addr = msspll_hw->base + REG_MSSPLL_REF_CR; + u32 mult, ref_div; + unsigned long rate_before_ctrl; + + mult = readl_relaxed(mult_addr) >> MSSPLL_FBDIV_SHIFT; + mult &= clk_div_mask(MSSPLL_FBDIV_WIDTH); + ref_div = readl_relaxed(ref_div_addr) >> MSSPLL_REFDIV_SHIFT; + ref_div &= clk_div_mask(MSSPLL_REFDIV_WIDTH); + + rate_before_ctrl = rate * (ref_div * MSSPLL_FIXED_DIV) / mult; + + return divider_round_rate(hw, rate_before_ctrl, prate, NULL, MSSPLL_POSTDIV_WIDTH, + msspll_hw->flags); +} + +static int mpfs_clk_msspll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long prate) +{ + struct mpfs_msspll_hw_clock *msspll_hw = to_mpfs_msspll_clk(hw); + void __iomem *mult_addr = msspll_hw->base + msspll_hw->reg_offset; + void __iomem *ref_div_addr = msspll_hw->base + REG_MSSPLL_REF_CR; + void __iomem *postdiv_addr = msspll_hw->base + REG_MSSPLL_POSTDIV_CR; + u32 mult, ref_div, postdiv; + int divider_setting; + unsigned long rate_before_ctrl, flags; + + mult = readl_relaxed(mult_addr) >> MSSPLL_FBDIV_SHIFT; + mult &= clk_div_mask(MSSPLL_FBDIV_WIDTH); + ref_div = readl_relaxed(ref_div_addr) >> MSSPLL_REFDIV_SHIFT; + ref_div &= clk_div_mask(MSSPLL_REFDIV_WIDTH); + + rate_before_ctrl = rate * (ref_div * MSSPLL_FIXED_DIV) / mult; + divider_setting = divider_get_val(rate_before_ctrl, prate, NULL, MSSPLL_POSTDIV_WIDTH, + msspll_hw->flags); + + if (divider_setting < 0) + return divider_setting; + + spin_lock_irqsave(&mpfs_clk_lock, flags); + + postdiv = readl_relaxed(postdiv_addr); + postdiv &= ~(clk_div_mask(MSSPLL_POSTDIV_WIDTH) << MSSPLL_POSTDIV_SHIFT); + writel_relaxed(postdiv, postdiv_addr); + + spin_unlock_irqrestore(&mpfs_clk_lock, flags); + + return 0; +} + static const struct clk_ops mpfs_clk_msspll_ops = { .recalc_rate = mpfs_clk_msspll_recalc_rate, + .round_rate = mpfs_clk_msspll_round_rate, + .set_rate = mpfs_clk_msspll_set_rate, }; #define CLK_PLL(_id, _name, _parent, _shift, _width, _flags, _offset) { \ From patchwork Fri Sep 9 12:31:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971698 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 724B8C6FA92 for ; Fri, 9 Sep 2022 12:32:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231742AbiIIMcW (ORCPT ); Fri, 9 Sep 2022 08:32:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231545AbiIIMcP (ORCPT ); Fri, 9 Sep 2022 08:32:15 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44C89124606; Fri, 9 Sep 2022 05:32:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726733; x=1694262733; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=G+WYVhgOvW4xmI5fmn7rIAM6FUhUnHezJLVWecWQzyI=; b=Ktyz8uIhDPgb9d3A0JuQHnoO8gqxIu7pv0GnpJTwgCKOc4xNRc65Pye+ e1DPL9DscXX5poVw/nn4azzlaDMEv4zfww9QPV+xgr7FV3D0ccgKm10sO MnS4V6/3AreDqKwbuTW34xdnvsCwC5ogRdxvRr2WyFMiNOF+bK9r9QmBt jME03Or1Ap8+RCGT+8K0ZpCf59yWj0mqoCXnb+5wv7zMplHLivT0StvgS LWyKxliG6a1JeiDCHkIW2QJ25Vi+MqslbCW6YgNCC6MQrfIX9nbeRTe5X EmIFG+lXLJnWlFYuLi5QPLHzhjQuUkmDlglPx5mxviBq0htUKiOGU+UUY A==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="179721685" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:13 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:11 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:09 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 09/14] clk: microchip: mpfs: move id & offset out of clock structs Date: Fri, 9 Sep 2022 13:31:18 +0100 Message-ID: <20220909123123.2699583-10-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The id and offset are the only thing differentiating the clock structs from "regular" clock structures. On the pretext of converting to more normal structures, move the id and offset out of the clock structs and into the hw structs instead. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index f40d22293539..9250fab88ebf 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -51,8 +51,6 @@ struct mpfs_msspll_hw_clock { struct mpfs_cfg_clock { const struct clk_div_table *table; - unsigned int id; - u32 reg_offset; u8 shift; u8 width; u8 flags; @@ -63,12 +61,13 @@ struct mpfs_cfg_hw_clock { void __iomem *sys_base; struct clk_hw hw; struct clk_init_data init; + unsigned int id; + u32 reg_offset; }; #define to_mpfs_cfg_clk(_hw) container_of(_hw, struct mpfs_cfg_hw_clock, hw) struct mpfs_periph_clock { - unsigned int id; u8 shift; }; @@ -76,6 +75,7 @@ struct mpfs_periph_hw_clock { struct mpfs_periph_clock periph; void __iomem *sys_base; struct clk_hw hw; + unsigned int id; }; #define to_mpfs_periph_clk(_hw) container_of(_hw, struct mpfs_periph_hw_clock, hw) @@ -241,7 +241,7 @@ static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long p void __iomem *base_addr = cfg_hw->sys_base; u32 val; - val = readl_relaxed(base_addr + cfg->reg_offset) >> cfg->shift; + val = readl_relaxed(base_addr + cfg_hw->reg_offset) >> cfg->shift; val &= clk_div_mask(cfg->width); return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width); @@ -270,10 +270,10 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned return divider_setting; spin_lock_irqsave(&mpfs_clk_lock, flags); - val = readl_relaxed(base_addr + cfg->reg_offset); + val = readl_relaxed(base_addr + cfg_hw->reg_offset); val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift); val |= divider_setting << cfg->shift; - writel_relaxed(val, base_addr + cfg->reg_offset); + writel_relaxed(val, base_addr + cfg_hw->reg_offset); spin_unlock_irqrestore(&mpfs_clk_lock, flags); @@ -287,11 +287,11 @@ static const struct clk_ops mpfs_clk_cfg_ops = { }; #define CLK_CFG(_id, _name, _parent, _shift, _width, _table, _flags, _offset) { \ - .cfg.id = _id, \ + .id = _id, \ .cfg.shift = _shift, \ .cfg.width = _width, \ .cfg.table = _table, \ - .cfg.reg_offset = _offset, \ + .reg_offset = _offset, \ .cfg.flags = _flags, \ .hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_cfg_ops, 0), \ } @@ -309,11 +309,11 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { CLK_CFG(CLK_AHB, "clk_ahb", "clk_msspll", 4, 2, mpfs_div_ahb_table, 0, REG_CLOCK_CONFIG_CR), { - .cfg.id = CLK_RTCREF, + .id = CLK_RTCREF, .cfg.shift = 0, .cfg.width = 12, .cfg.table = mpfs_div_rtcref_table, - .cfg.reg_offset = REG_RTC_CLOCK_CR, + .reg_offset = REG_RTC_CLOCK_CR, .cfg.flags = CLK_DIVIDER_ONE_BASED, .hw.init = CLK_HW_INIT_PARENTS_DATA("clk_rtcref", mpfs_ext_ref, &mpfs_clk_cfg_ops, 0), @@ -341,9 +341,9 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock * ret = mpfs_clk_register_cfg(dev, cfg_hw, sys_base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", - cfg_hw->cfg.id); + cfg_hw->id); - id = cfg_hw->cfg.id; + id = cfg_hw->id; data->hw_data.hws[id] = &cfg_hw->hw; } @@ -411,7 +411,7 @@ static const struct clk_ops mpfs_periph_clk_ops = { }; #define CLK_PERIPH(_id, _name, _parent, _shift, _flags) { \ - .periph.id = _id, \ + .id = _id, \ .periph.shift = _shift, \ .hw.init = CLK_HW_INIT_HW(_name, _parent, &mpfs_periph_clk_ops, \ _flags), \ @@ -486,9 +486,9 @@ static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_c ret = mpfs_clk_register_periph(dev, periph_hw, sys_base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", - periph_hw->periph.id); + periph_hw->id); - id = periph_hws[i].periph.id; + id = periph_hws[i].id; data->hw_data.hws[id] = &periph_hw->hw; } From patchwork Fri Sep 9 12:31:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971701 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62ED0C6FA8A for ; Fri, 9 Sep 2022 12:32:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231796AbiIIMca (ORCPT ); Fri, 9 Sep 2022 08:32:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231748AbiIIMcX (ORCPT ); Fri, 9 Sep 2022 08:32:23 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FDF4B7296; Fri, 9 Sep 2022 05:32:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726741; x=1694262741; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=u+OSH553B+7DD1EalJumCdX6Jr9V3HOUdK+hUy2pDW4=; b=nfxzUzO5RSDPJVC7Etn7RNJJiQmwocQbOkAxX/QHsrvYsiKIYmPEuav0 NGgL5EgRK/tK7vGG3yzWDqxy20e/KvQsRb4H6uC+PNca5eQY6IV2f4cB/ ORJJtI0cT/FDSHTygCr+nzdb6QlsYSGZ01CYjdalhfHcSkfmMHo9eFq9F xzYy/IFLkebWKN/SZAr853/2yoRe3fvuT387FJTGZTFCZmvMJwZIvm7Ff S91lcE3/ep29MNhybZfzb1DC+tVTK/KdW6MXZ+ASu1AIKOnqIspJcqJea tBY70qylfMfvVF9vOGR8/g6ixUVp7Qm658hZ1STT1/OL6DJBTzsBUSlnZ g==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399329" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:20 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:14 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:12 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 10/14] clk: microchip: mpfs: simplify control reg access Date: Fri, 9 Sep 2022 13:31:19 +0100 Message-ID: <20220909123123.2699583-11-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The control reg addresses are known when the clocks are registered, so we can, instead of assigning a base pointer to the structs, assign the control reg addresses directly. Accordingly, remove the interim variables used during reads/writes to those registers. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 42 +++++++++++++------------------- 1 file changed, 17 insertions(+), 25 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 9250fab88ebf..4ee894d58ea9 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -50,6 +50,7 @@ struct mpfs_msspll_hw_clock { #define to_mpfs_msspll_clk(_hw) container_of(_hw, struct mpfs_msspll_hw_clock, hw) struct mpfs_cfg_clock { + void __iomem *reg; const struct clk_div_table *table; u8 shift; u8 width; @@ -58,7 +59,6 @@ struct mpfs_cfg_clock { struct mpfs_cfg_hw_clock { struct mpfs_cfg_clock cfg; - void __iomem *sys_base; struct clk_hw hw; struct clk_init_data init; unsigned int id; @@ -68,12 +68,12 @@ struct mpfs_cfg_hw_clock { #define to_mpfs_cfg_clk(_hw) container_of(_hw, struct mpfs_cfg_hw_clock, hw) struct mpfs_periph_clock { + void __iomem *reg; u8 shift; }; struct mpfs_periph_hw_clock { struct mpfs_periph_clock periph; - void __iomem *sys_base; struct clk_hw hw; unsigned int id; }; @@ -212,14 +212,13 @@ static int mpfs_clk_register_msspll(struct device *dev, struct mpfs_msspll_hw_cl static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_clock *msspll_hws, unsigned int num_clks, struct mpfs_clock_data *data) { - void __iomem *base = data->msspll_base; unsigned int i; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_msspll_hw_clock *msspll_hw = &msspll_hws[i]; - ret = mpfs_clk_register_msspll(dev, msspll_hw, base); + ret = mpfs_clk_register_msspll(dev, msspll_hw, data->msspll_base); if (ret) return dev_err_probe(dev, ret, "failed to register msspll id: %d\n", CLK_MSSPLL); @@ -238,10 +237,9 @@ static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long p { struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - void __iomem *base_addr = cfg_hw->sys_base; u32 val; - val = readl_relaxed(base_addr + cfg_hw->reg_offset) >> cfg->shift; + val = readl_relaxed(cfg->reg) >> cfg->shift; val &= clk_div_mask(cfg->width); return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width); @@ -259,7 +257,6 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned { struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - void __iomem *base_addr = cfg_hw->sys_base; unsigned long flags; u32 val; int divider_setting; @@ -270,10 +267,10 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned return divider_setting; spin_lock_irqsave(&mpfs_clk_lock, flags); - val = readl_relaxed(base_addr + cfg_hw->reg_offset); + val = readl_relaxed(cfg->reg); val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift); val |= divider_setting << cfg->shift; - writel_relaxed(val, base_addr + cfg_hw->reg_offset); + writel_relaxed(val, cfg->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); @@ -321,9 +318,9 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { }; static int mpfs_clk_register_cfg(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hw, - void __iomem *sys_base) + void __iomem *base) { - cfg_hw->sys_base = sys_base; + cfg_hw->cfg.reg = base + cfg_hw->reg_offset; return devm_clk_hw_register(dev, &cfg_hw->hw); } @@ -331,14 +328,13 @@ static int mpfs_clk_register_cfg(struct device *dev, struct mpfs_cfg_hw_clock *c static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hws, unsigned int num_clks, struct mpfs_clock_data *data) { - void __iomem *sys_base = data->base; unsigned int i, id; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_cfg_hw_clock *cfg_hw = &cfg_hws[i]; - ret = mpfs_clk_register_cfg(dev, cfg_hw, sys_base); + ret = mpfs_clk_register_cfg(dev, cfg_hw, data->base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", cfg_hw->id); @@ -358,15 +354,14 @@ static int mpfs_periph_clk_enable(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg, val; unsigned long flags; spin_lock_irqsave(&mpfs_clk_lock, flags); - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); val = reg | (1u << periph->shift); - writel_relaxed(val, base_addr + REG_SUBBLK_CLOCK_CR); + writel_relaxed(val, periph->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); @@ -377,15 +372,14 @@ static void mpfs_periph_clk_disable(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg, val; unsigned long flags; spin_lock_irqsave(&mpfs_clk_lock, flags); - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); val = reg & ~(1u << periph->shift); - writel_relaxed(val, base_addr + REG_SUBBLK_CLOCK_CR); + writel_relaxed(val, periph->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); } @@ -394,10 +388,9 @@ static int mpfs_periph_clk_is_enabled(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg; - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); if (reg & (1u << periph->shift)) return 1; @@ -466,9 +459,9 @@ static struct mpfs_periph_hw_clock mpfs_periph_clks[] = { }; static int mpfs_clk_register_periph(struct device *dev, struct mpfs_periph_hw_clock *periph_hw, - void __iomem *sys_base) + void __iomem *base) { - periph_hw->sys_base = sys_base; + periph_hw->periph.reg = base + REG_SUBBLK_CLOCK_CR; return devm_clk_hw_register(dev, &periph_hw->hw); } @@ -476,14 +469,13 @@ static int mpfs_clk_register_periph(struct device *dev, struct mpfs_periph_hw_cl static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_clock *periph_hws, int num_clks, struct mpfs_clock_data *data) { - void __iomem *sys_base = data->base; unsigned int i, id; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_periph_hw_clock *periph_hw = &periph_hws[i]; - ret = mpfs_clk_register_periph(dev, periph_hw, sys_base); + ret = mpfs_clk_register_periph(dev, periph_hw, data->base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", periph_hw->id); From patchwork Fri Sep 9 12:31:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971700 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E947FECAAD3 for ; Fri, 9 Sep 2022 12:32:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231722AbiIIMc1 (ORCPT ); Fri, 9 Sep 2022 08:32:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231496AbiIIMcU (ORCPT ); Fri, 9 Sep 2022 08:32:20 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37463117490; Fri, 9 Sep 2022 05:32:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726739; x=1694262739; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EsBl3c2pAJpnmMw9iJUlkGwn2OEqdLbHzd7DxAcqqc0=; b=zHE0L4A9pOj2shIBJ839O1EfyWIKqm0dQ2YEKiuaB0OLpwQSvRkAtRW6 1y1NyeyBU0dEBVCRaFWMmJqkmRd2ngXqNktpj8TTENmppZeU6wtQUcayw coMm/XWqVQHyam9CGHHZxHlawms+IAo9ghqe/xLSQKyVB4xouNCXliAy1 hUw8fETjpI6nraD9hhXQXhUdvnJKYCkwqRclmviCLlhSlDDIRAO3qhtPF P3gPjXF8VpoivAUy/W4QxtRnYpxXsG83UvZA2E94haxV8oM43YCmeOErE hXZcAItmiqMB9qNMLE4yTWeUZevFMHykI3yOrcpKAI7jqDMUPHEATjB7O A==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="179835590" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:18 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:17 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:15 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 11/14] clk: microchip: mpfs: delete 2 line mpfs_clk_register_foo() Date: Fri, 9 Sep 2022 13:31:20 +0100 Message-ID: <20220909123123.2699583-12-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The register functions are now comprised of only a single operation each and no longer add anything to the driver. Delete them. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 33 ++++++-------------------------- 1 file changed, 6 insertions(+), 27 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 4ee894d58ea9..5c29313363f2 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -201,14 +201,6 @@ static struct mpfs_msspll_hw_clock mpfs_msspll_clks[] = { MSSPLL_FBDIV_WIDTH, 0, REG_MSSPLL_SSCG_2_CR), }; -static int mpfs_clk_register_msspll(struct device *dev, struct mpfs_msspll_hw_clock *msspll_hw, - void __iomem *base) -{ - msspll_hw->base = base; - - return devm_clk_hw_register(dev, &msspll_hw->hw); -} - static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_clock *msspll_hws, unsigned int num_clks, struct mpfs_clock_data *data) { @@ -218,7 +210,8 @@ static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_c for (i = 0; i < num_clks; i++) { struct mpfs_msspll_hw_clock *msspll_hw = &msspll_hws[i]; - ret = mpfs_clk_register_msspll(dev, msspll_hw, data->msspll_base); + msspll_hw->base = data->msspll_base; + ret = devm_clk_hw_register(dev, &msspll_hw->hw); if (ret) return dev_err_probe(dev, ret, "failed to register msspll id: %d\n", CLK_MSSPLL); @@ -317,14 +310,6 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { } }; -static int mpfs_clk_register_cfg(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hw, - void __iomem *base) -{ - cfg_hw->cfg.reg = base + cfg_hw->reg_offset; - - return devm_clk_hw_register(dev, &cfg_hw->hw); -} - static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hws, unsigned int num_clks, struct mpfs_clock_data *data) { @@ -334,7 +319,8 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock * for (i = 0; i < num_clks; i++) { struct mpfs_cfg_hw_clock *cfg_hw = &cfg_hws[i]; - ret = mpfs_clk_register_cfg(dev, cfg_hw, data->base); + cfg_hw->cfg.reg = data->base + cfg_hw->reg_offset; + ret = devm_clk_hw_register(dev, &cfg_hw->hw); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", cfg_hw->id); @@ -458,14 +444,6 @@ static struct mpfs_periph_hw_clock mpfs_periph_clks[] = { CLK_PERIPH(CLK_CFM, "clk_periph_cfm", PARENT_CLK(AHB), 29, 0), }; -static int mpfs_clk_register_periph(struct device *dev, struct mpfs_periph_hw_clock *periph_hw, - void __iomem *base) -{ - periph_hw->periph.reg = base + REG_SUBBLK_CLOCK_CR; - - return devm_clk_hw_register(dev, &periph_hw->hw); -} - static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_clock *periph_hws, int num_clks, struct mpfs_clock_data *data) { @@ -475,7 +453,8 @@ static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_c for (i = 0; i < num_clks; i++) { struct mpfs_periph_hw_clock *periph_hw = &periph_hws[i]; - ret = mpfs_clk_register_periph(dev, periph_hw, data->base); + periph_hw->periph.reg = data->base + REG_SUBBLK_CLOCK_CR; + ret = devm_clk_hw_register(dev, &periph_hw->hw); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", periph_hw->id); From patchwork Fri Sep 9 12:31:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971702 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC5B8ECAAA1 for ; Fri, 9 Sep 2022 12:32:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231698AbiIIMcd (ORCPT ); Fri, 9 Sep 2022 08:32:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231359AbiIIMcY (ORCPT ); Fri, 9 Sep 2022 08:32:24 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4946411E6F5; Fri, 9 Sep 2022 05:32:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726743; x=1694262743; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=spU2HxZHyEEw13oa8pbCD2+1FpiDboLNF/8dbvGeni4=; b=zW/ebffelgiXwXnn5iVKF7fUcb4+dq59eOzfyj1PwQdvXb6+P3aLAS5e uGrdxejJoOeRKvsCbdOCcP+hQwFZH340Msibw35q1HJSgHn8IeLjGmg99 r9nW7fTd1ocfMj/JQIvtgZeo+ILSDRKYIFwXMqNgGBAqt4gU+NHAQJ56S dlZ5n5h/Mc2Vusr5qvaVUz5RiEO2oCQ/qvbOUNmBrMrEUX8AVcoxBn86Q PgAL7sqpWXpLeFc6iXS2a7HyLIkvv9Ll1ZUQB5/2HgOw+ENYLai18akKw PUlvTbotqG7Xb4CWEq1SqlxnZKV4fXH1C9f4qnIR6k1myZoIANXAHAA7V A==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399356" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:22 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:20 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:17 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 12/14] clk: microchip: mpfs: convert cfg_clk to clk_divider Date: Fri, 9 Sep 2022 13:31:21 +0100 Message-ID: <20220909123123.2699583-13-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The cfg_clk struct is now just a redefinition of the clk_divider struct with custom implentations of the ops, that implement an extra level of redirection. Remove the custom struct and replace it with clk_divider. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 76 ++++---------------------------- 1 file changed, 8 insertions(+), 68 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 5c29313363f2..ec41379ff139 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -49,24 +49,13 @@ struct mpfs_msspll_hw_clock { #define to_mpfs_msspll_clk(_hw) container_of(_hw, struct mpfs_msspll_hw_clock, hw) -struct mpfs_cfg_clock { - void __iomem *reg; - const struct clk_div_table *table; - u8 shift; - u8 width; - u8 flags; -}; - struct mpfs_cfg_hw_clock { - struct mpfs_cfg_clock cfg; - struct clk_hw hw; + struct clk_divider cfg; struct clk_init_data init; unsigned int id; u32 reg_offset; }; -#define to_mpfs_cfg_clk(_hw) container_of(_hw, struct mpfs_cfg_hw_clock, hw) - struct mpfs_periph_clock { void __iomem *reg; u8 shift; @@ -226,56 +215,6 @@ static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_c * "CFG" clocks */ -static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long prate) -{ - struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); - struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - u32 val; - - val = readl_relaxed(cfg->reg) >> cfg->shift; - val &= clk_div_mask(cfg->width); - - return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width); -} - -static long mpfs_cfg_clk_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) -{ - struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); - struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - - return divider_round_rate(hw, rate, prate, cfg->table, cfg->width, 0); -} - -static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long prate) -{ - struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); - struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - unsigned long flags; - u32 val; - int divider_setting; - - divider_setting = divider_get_val(rate, prate, cfg->table, cfg->width, 0); - - if (divider_setting < 0) - return divider_setting; - - spin_lock_irqsave(&mpfs_clk_lock, flags); - val = readl_relaxed(cfg->reg); - val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift); - val |= divider_setting << cfg->shift; - writel_relaxed(val, cfg->reg); - - spin_unlock_irqrestore(&mpfs_clk_lock, flags); - - return 0; -} - -static const struct clk_ops mpfs_clk_cfg_ops = { - .recalc_rate = mpfs_cfg_clk_recalc_rate, - .round_rate = mpfs_cfg_clk_round_rate, - .set_rate = mpfs_cfg_clk_set_rate, -}; - #define CLK_CFG(_id, _name, _parent, _shift, _width, _table, _flags, _offset) { \ .id = _id, \ .cfg.shift = _shift, \ @@ -283,7 +222,8 @@ static const struct clk_ops mpfs_clk_cfg_ops = { .cfg.table = _table, \ .reg_offset = _offset, \ .cfg.flags = _flags, \ - .hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_cfg_ops, 0), \ + .cfg.hw.init = CLK_HW_INIT(_name, _parent, &clk_divider_ops, 0), \ + .cfg.lock = &mpfs_clk_lock, \ } #define CLK_CPU_OFFSET 0u @@ -305,8 +245,8 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { .cfg.table = mpfs_div_rtcref_table, .reg_offset = REG_RTC_CLOCK_CR, .cfg.flags = CLK_DIVIDER_ONE_BASED, - .hw.init = - CLK_HW_INIT_PARENTS_DATA("clk_rtcref", mpfs_ext_ref, &mpfs_clk_cfg_ops, 0), + .cfg.hw.init = + CLK_HW_INIT_PARENTS_DATA("clk_rtcref", mpfs_ext_ref, &clk_divider_ops, 0), } }; @@ -320,13 +260,13 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock * struct mpfs_cfg_hw_clock *cfg_hw = &cfg_hws[i]; cfg_hw->cfg.reg = data->base + cfg_hw->reg_offset; - ret = devm_clk_hw_register(dev, &cfg_hw->hw); + ret = devm_clk_hw_register(dev, &cfg_hw->cfg.hw); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", cfg_hw->id); id = cfg_hw->id; - data->hw_data.hws[id] = &cfg_hw->hw; + data->hw_data.hws[id] = &cfg_hw->cfg.hw; } return 0; @@ -396,7 +336,7 @@ static const struct clk_ops mpfs_periph_clk_ops = { _flags), \ } -#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].hw) +#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].cfg.hw) /* * Critical clocks: From patchwork Fri Sep 9 12:31:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971703 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A0344ECAAA1 for ; Fri, 9 Sep 2022 12:32:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231835AbiIIMch (ORCPT ); Fri, 9 Sep 2022 08:32:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231782AbiIIMc2 (ORCPT ); Fri, 9 Sep 2022 08:32:28 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D049112A33D; Fri, 9 Sep 2022 05:32:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726745; x=1694262745; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NUyIiHhwF7D7ghHzl58tKW+HvO2w0O/HwEEY9Js78/M=; b=J6rS8cyvVzStmjxwX+MlgexM3rYqZrOGuCbTnsRsP3LaNxKnp0+YBqd9 OThmUGfO0hHAfKQXiPNykmMjzyQp1XoEcvn1G2PBuPml19R9RCUtlhftC 99pI8FRnFYozodfAuaAHWYbXP5LtPm0QCDFPG27yH6fJU8QbMnetAuvA9 ARlf7pIh6sw+8oFL2pDnL7ybD+VzTf3qf9cumoEd+OIY+Ly3ULVTBf1gP gbmnArvn2fueb7b549HkZcU9lD0SjifHLBHtKFoj0enoxZC+8DIxt2y6+ aJCaOUNt5H1ziBorN3WNKrzNsP8n7M1lZ2qwAH7CFLeBQsBaWOY2K2h+C Q==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="112926532" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:23 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:23 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:20 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 13/14] clk: microchip: mpfs: convert periph_clk to clk_gate Date: Fri, 9 Sep 2022 13:31:22 +0100 Message-ID: <20220909123123.2699583-14-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org With the reset code moved to the recently added reset controller, there is no need for custom ops any longer. Remove the custom ops and the custom struct by converting to a clk_gate. Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley Reviewed-by: Claudiu Beznea --- drivers/clk/microchip/clk-mpfs.c | 72 +++----------------------------- 1 file changed, 6 insertions(+), 66 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index ec41379ff139..846b7a992aad 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -56,19 +56,11 @@ struct mpfs_cfg_hw_clock { u32 reg_offset; }; -struct mpfs_periph_clock { - void __iomem *reg; - u8 shift; -}; - struct mpfs_periph_hw_clock { - struct mpfs_periph_clock periph; - struct clk_hw hw; + struct clk_gate periph; unsigned int id; }; -#define to_mpfs_periph_clk(_hw) container_of(_hw, struct mpfs_periph_hw_clock, hw) - /* * mpfs_clk_lock prevents anything else from writing to the * mpfs clk block while a software locked register is being written. @@ -276,64 +268,12 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock * * peripheral clocks - devices connected to axi or ahb buses. */ -static int mpfs_periph_clk_enable(struct clk_hw *hw) -{ - struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); - struct mpfs_periph_clock *periph = &periph_hw->periph; - u32 reg, val; - unsigned long flags; - - spin_lock_irqsave(&mpfs_clk_lock, flags); - - reg = readl_relaxed(periph->reg); - val = reg | (1u << periph->shift); - writel_relaxed(val, periph->reg); - - spin_unlock_irqrestore(&mpfs_clk_lock, flags); - - return 0; -} - -static void mpfs_periph_clk_disable(struct clk_hw *hw) -{ - struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); - struct mpfs_periph_clock *periph = &periph_hw->periph; - u32 reg, val; - unsigned long flags; - - spin_lock_irqsave(&mpfs_clk_lock, flags); - - reg = readl_relaxed(periph->reg); - val = reg & ~(1u << periph->shift); - writel_relaxed(val, periph->reg); - - spin_unlock_irqrestore(&mpfs_clk_lock, flags); -} - -static int mpfs_periph_clk_is_enabled(struct clk_hw *hw) -{ - struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); - struct mpfs_periph_clock *periph = &periph_hw->periph; - u32 reg; - - reg = readl_relaxed(periph->reg); - if (reg & (1u << periph->shift)) - return 1; - - return 0; -} - -static const struct clk_ops mpfs_periph_clk_ops = { - .enable = mpfs_periph_clk_enable, - .disable = mpfs_periph_clk_disable, - .is_enabled = mpfs_periph_clk_is_enabled, -}; - #define CLK_PERIPH(_id, _name, _parent, _shift, _flags) { \ .id = _id, \ - .periph.shift = _shift, \ - .hw.init = CLK_HW_INIT_HW(_name, _parent, &mpfs_periph_clk_ops, \ + .periph.bit_idx = _shift, \ + .periph.hw.init = CLK_HW_INIT_HW(_name, _parent, &clk_gate_ops, \ _flags), \ + .periph.lock = &mpfs_clk_lock, \ } #define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].cfg.hw) @@ -394,13 +334,13 @@ static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_c struct mpfs_periph_hw_clock *periph_hw = &periph_hws[i]; periph_hw->periph.reg = data->base + REG_SUBBLK_CLOCK_CR; - ret = devm_clk_hw_register(dev, &periph_hw->hw); + ret = devm_clk_hw_register(dev, &periph_hw->periph.hw); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", periph_hw->id); id = periph_hws[i].id; - data->hw_data.hws[id] = &periph_hw->hw; + data->hw_data.hws[id] = &periph_hw->periph.hw; } return 0; From patchwork Fri Sep 9 12:31:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12971704 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1E12C6FA82 for ; Fri, 9 Sep 2022 12:33:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231944AbiIIMd1 (ORCPT ); Fri, 9 Sep 2022 08:33:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231945AbiIIMdD (ORCPT ); Fri, 9 Sep 2022 08:33:03 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03CEF12D1B7; Fri, 9 Sep 2022 05:32:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1662726757; x=1694262757; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8Ebm2e444oNPVsmehSExyMHTubu6L4vuC1vUJ+JqC+Y=; b=B60LwbzBuUrRMMx9g52sJbqfsT0ZYKVK8XCIbzp/fEECsivjBoWwwj/+ FpAjZAYL4EcWeI2tB/+AfZYQXe5yZmRSRHsEUbc3oxuXxVwZnxD1TTMwS Mv+7Ylg+WMyIaPXmxuugdCH4hF/Z/c4SuHFGLFUon7cBBv4R84duFmB+5 zZMnZsPFey2UUCizu+0Qn80D342/tCf/A4FsG/BJAJRY9jcv14ar/O2zq A2rxsVFueZ+Mzydy67YwuGPC+M3wpyLZyjezvqKwFQFgncI3EmM7o9r02 gSebm1O4ZA4cTTqLbq8tm3tX2HH2t+pWwdgfpu271jSzdIwbuirPdRUBH g==; X-IronPort-AV: E=Sophos;i="5.93,303,1654585200"; d="scan'208";a="176399420" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 09 Sep 2022 05:32:34 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 9 Sep 2022 05:32:26 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 9 Sep 2022 05:32:23 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , Subject: [PATCH v5 14/14] clk: microchip: mpfs: update module authorship & licencing Date: Fri, 9 Sep 2022 13:31:23 +0100 Message-ID: <20220909123123.2699583-15-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220909123123.2699583-1-conor.dooley@microchip.com> References: <20220909123123.2699583-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Padmarao wrote the driver in its original, pre upstream form. Daire & myself have been responsible for getting it upstreamable and subsequent development. Move Daire out of the blurb & into a MODULE_AUTHOR entry & add entries for myself and Padmarao. While we are at it, convert the MODULE_LICENSE field to its preferred form of "GPL". Reviewed-by: Daire McNamara Signed-off-by: Conor Dooley --- drivers/clk/microchip/clk-mpfs.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 846b7a992aad..4f0a19db7ed7 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -1,7 +1,8 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Daire McNamara, - * Copyright (C) 2020 Microchip Technology Inc. All rights reserved. + * PolarFire SoC MSS/core complex clock control + * + * Copyright (C) 2020-2022 Microchip Technology Inc. All rights reserved. */ #include #include @@ -509,4 +510,7 @@ static void __exit clk_mpfs_exit(void) module_exit(clk_mpfs_exit); MODULE_DESCRIPTION("Microchip PolarFire SoC Clock Driver"); -MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Padmarao Begari "); +MODULE_AUTHOR("Daire McNamara "); +MODULE_AUTHOR("Conor Dooley "); +MODULE_LICENSE("GPL");