From patchwork Thu Dec 1 22:56:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 13061933 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1CD5CC4332F for ; Thu, 1 Dec 2022 23:31:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5eScc5a6TBCBkyiQFuzIo+nese++EI7feogfWR9JkZg=; b=2BCu99q7UFDywS anYYktLbUGn6N7exjAKT5SL8QmsKRYPkWqLvVpG9dt1r9MPcMfd3DGBX83pKeXj3UVFV1N2vcbNYu p21Qs9KVwmHvdzC7k503O6SOR5vgwHeN4xQoom13p8HDDGsh1jbyaUDxiokdzlbMdtma6sSKRbyah CMwtFZyPsHoVKlWSdwkFjmCdulEjNn4iLNEhe/CPR0Tr/l5L91pFH6PLCaML8QY6YvEvK8OkA35Ud Hvk3TckddeIG6FNNx+pBMLO8MnmSguE+waUd4w6g423b1jLLVspXx/0fdjBFcLYqO7JZ6O+17U1ha 8MVE8K+40MgE6wL10iSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0t0h-00BhDr-5R; Thu, 01 Dec 2022 23:30:33 +0000 Received: from mx.sberdevices.ru ([45.89.227.171]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0sUt-00BSR7-1D; Thu, 01 Dec 2022 22:57:45 +0000 Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id C5D885FD0B; Fri, 2 Dec 2022 01:57:28 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1669935448; bh=UKrWsAOhIJL4BKEX1Ufd25mHpT88I1IOGuLSaqJ24bw=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=HgbSMrJ6DZ4te2zmP2j7VsCP2uKQrR97hFMvUcmebKJY96vOKlYe0HrP4SUechJVC ybQahPa6bDgjE1j7OprgAVgX490c5udD+CxXlgnxKoiY0Swlz14Y5C3upGJqzJV843 3c64uNJxzQilzvhPYtb6pEsVWMOrn8ivHK7uLqJRQetAYBuxkmZl+dcufu/6ZoL7rn lT0T58RoIzBXE1pp47DHgeRROMVJjDEq9m6YKYWTv10QM58sL6t5esyKFmjKHwbNms OEVvH9hergNPYgV+baLoFMzmLXtlUMBdMp68O9PMzlNKrkuiFQVfkwI1BBMLjiiKRX eDGjm5v6M307Q== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mx.sberdevices.ru (Postfix) with ESMTP; Fri, 2 Dec 2022 01:57:28 +0300 (MSK) From: Dmitry Rokosov To: , , , , , , , CC: , , , , , , , , Dmitry Rokosov Subject: [PATCH v8 02/11] clk: meson: a1: add support for Amlogic A1 PLL clock driver Date: Fri, 2 Dec 2022 01:56:54 +0300 Message-ID: <20221201225703.6507-3-ddrokosov@sberdevices.ru> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20221201225703.6507-1-ddrokosov@sberdevices.ru> References: <20221201225703.6507-1-ddrokosov@sberdevices.ru> MIME-Version: 1.0 X-Originating-IP: [172.16.1.6] X-ClientProxiedBy: S-MS-EXCH02.sberdevices.ru (172.16.1.5) To S-MS-EXCH01.sberdevices.ru (172.16.1.4) X-KSMG-Rule-ID: 4 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiPhishing: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2022/12/01 20:49:00 #20634374 X-KSMG-AntiVirus-Status: Clean, skipped X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221201_145740_429454_4FBC4B23 X-CRM114-Status: GOOD ( 30.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jian Hu The Amlogic A1 clock includes three drivers: pll clocks, peripheral clocks, CPU clocks. sys pll and CPU clocks will be sent in next patch. Unlike the previous series, there is no EE/AO domain in A1 CLK controllers. Signed-off-by: Jian Hu Signed-off-by: Dmitry Rokosov --- drivers/clk/meson/Kconfig | 9 + drivers/clk/meson/Makefile | 1 + drivers/clk/meson/a1-pll.c | 360 +++++++++++++++++++++++++++++++++++++ drivers/clk/meson/a1-pll.h | 56 ++++++ 4 files changed, 426 insertions(+) create mode 100644 drivers/clk/meson/a1-pll.c create mode 100644 drivers/clk/meson/a1-pll.h diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig index fc002c155bc3..ab34662b24f0 100644 --- a/drivers/clk/meson/Kconfig +++ b/drivers/clk/meson/Kconfig @@ -99,6 +99,15 @@ config COMMON_CLK_AXG_AUDIO Support for the audio clock controller on AmLogic A113D devices, aka axg, Say Y if you want audio subsystem to work. +config COMMON_CLK_A1_PLL + bool + depends on ARCH_MESON + select COMMON_CLK_MESON_REGMAP + select COMMON_CLK_MESON_PLL + help + Support for the PLL clock controller on Amlogic A113L device, + aka a1. Say Y if you want PLL to work. + config COMMON_CLK_G12A tristate "G12 and SM1 SoC clock controllers support" depends on ARM64 diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index 6eca2a406ee3..2f17f475a48f 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_COMMON_CLK_MESON_VID_PLL_DIV) += vid-pll-div.o obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o +obj-$(CONFIG_COMMON_CLK_A1_PLL) += a1-pll.o obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o diff --git a/drivers/clk/meson/a1-pll.c b/drivers/clk/meson/a1-pll.c new file mode 100644 index 000000000000..69c1ca07d041 --- /dev/null +++ b/drivers/clk/meson/a1-pll.c @@ -0,0 +1,360 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2019 Amlogic, Inc. All rights reserved. + * Author: Jian Hu + */ + +#include +#include +#include +#include "a1-pll.h" +#include "clk-pll.h" +#include "clk-regmap.h" + +static struct clk_regmap a1_fixed_pll_dco = { + .data = &(struct meson_clk_pll_data){ + .en = { + .reg_off = ANACTRL_FIXPLL_CTRL0, + .shift = 28, + .width = 1, + }, + .m = { + .reg_off = ANACTRL_FIXPLL_CTRL0, + .shift = 0, + .width = 8, + }, + .n = { + .reg_off = ANACTRL_FIXPLL_CTRL0, + .shift = 10, + .width = 5, + }, + .frac = { + .reg_off = ANACTRL_FIXPLL_CTRL1, + .shift = 0, + .width = 19, + }, + .l = { + .reg_off = ANACTRL_FIXPLL_STS, + .shift = 31, + .width = 1, + }, + .rst = { + .reg_off = ANACTRL_FIXPLL_CTRL0, + .shift = 29, + .width = 1, + }, + }, + .hw.init = &(struct clk_init_data){ + .name = "fixed_pll_dco", + .ops = &meson_clk_pll_ro_ops, + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal_fixpll", + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap a1_fixed_pll = { + .data = &(struct clk_regmap_gate_data){ + .offset = ANACTRL_FIXPLL_CTRL0, + .bit_idx = 20, + }, + .hw.init = &(struct clk_init_data) { + .name = "fixed_pll", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fixed_pll_dco.hw + }, + .num_parents = 1, + /* + * It is enough that the fdiv leaf has critical flag, + * No critical or unused flag here. + */ + }, +}; + +static const struct pll_mult_range a1_hifi_pll_mult_range = { + .min = 32, + .max = 64, +}; + +static const struct reg_sequence a1_hifi_init_regs[] = { + { .reg = ANACTRL_HIFIPLL_CTRL1, .def = 0x01800000 }, + { .reg = ANACTRL_HIFIPLL_CTRL2, .def = 0x00001100 }, + { .reg = ANACTRL_HIFIPLL_CTRL3, .def = 0x100a1100 }, + { .reg = ANACTRL_HIFIPLL_CTRL4, .def = 0x00302000 }, + { .reg = ANACTRL_HIFIPLL_CTRL0, .def = 0x01f18440 }, +}; + +static struct clk_regmap a1_hifi_pll = { + .data = &(struct meson_clk_pll_data){ + .en = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 28, + .width = 1, + }, + .m = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 0, + .width = 8, + }, + .n = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 10, + .width = 5, + }, + .frac = { + .reg_off = ANACTRL_HIFIPLL_CTRL1, + .shift = 0, + .width = 19, + }, + .l = { + .reg_off = ANACTRL_HIFIPLL_STS, + .shift = 31, + .width = 1, + }, + .current_en = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 26, + .width = 1, + }, + .l_detect = { + .reg_off = ANACTRL_HIFIPLL_CTRL2, + .shift = 6, + .width = 1, + }, + .range = &a1_hifi_pll_mult_range, + .init_regs = a1_hifi_init_regs, + .init_count = ARRAY_SIZE(a1_hifi_init_regs), + }, + .hw.init = &(struct clk_init_data){ + .name = "hifi_pll", + .ops = &meson_clk_pll_ops, + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal_hifipll", + }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor a1_fclk_div2_div = { + .mult = 1, + .div = 2, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div2_div", + .ops = &clk_fixed_factor_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap a1_fclk_div2 = { + .data = &(struct clk_regmap_gate_data){ + .offset = ANACTRL_FIXPLL_CTRL0, + .bit_idx = 21, + }, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div2", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fclk_div2_div.hw + }, + .num_parents = 1, + /* + * This clock is used by DDR clock in BL2 firmware + * and is required by the platform to operate correctly. + * Until the following condition are met, we need this clock to + * be marked as critical: + * a) Mark the clock used by a firmware resource, if possible + * b) CCF has a clock hand-off mechanism to make the sure the + * clock stays on until the proper driver comes along + */ + .flags = CLK_IS_CRITICAL, + }, +}; + +static struct clk_fixed_factor a1_fclk_div3_div = { + .mult = 1, + .div = 3, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div3_div", + .ops = &clk_fixed_factor_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap a1_fclk_div3 = { + .data = &(struct clk_regmap_gate_data){ + .offset = ANACTRL_FIXPLL_CTRL0, + .bit_idx = 22, + }, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div3", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fclk_div3_div.hw + }, + .num_parents = 1, + /* + * This clock is used by APB bus which is set in boot ROM code + * and is required by the platform to operate correctly. + * About critical, refer to a1_fclk_div2. + */ + .flags = CLK_IS_CRITICAL, + }, +}; + +static struct clk_fixed_factor a1_fclk_div5_div = { + .mult = 1, + .div = 5, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div5_div", + .ops = &clk_fixed_factor_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap a1_fclk_div5 = { + .data = &(struct clk_regmap_gate_data){ + .offset = ANACTRL_FIXPLL_CTRL0, + .bit_idx = 23, + }, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div5", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fclk_div5_div.hw + }, + .num_parents = 1, + /* + * This clock is used by AXI bus which setted in Romcode + * and is required by the platform to operate correctly. + * About critical, refer to a1_fclk_div2. + */ + .flags = CLK_IS_CRITICAL, + }, +}; + +static struct clk_fixed_factor a1_fclk_div7_div = { + .mult = 1, + .div = 7, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div7_div", + .ops = &clk_fixed_factor_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap a1_fclk_div7 = { + .data = &(struct clk_regmap_gate_data){ + .offset = ANACTRL_FIXPLL_CTRL0, + .bit_idx = 24, + }, + .hw.init = &(struct clk_init_data){ + .name = "fclk_div7", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { + &a1_fclk_div7_div.hw + }, + .num_parents = 1, + }, +}; + +/* Array of all clocks provided by this provider */ +static struct clk_hw_onecell_data a1_pll_hw_onecell_data = { + .hws = { + [CLKID_FIXED_PLL_DCO] = &a1_fixed_pll_dco.hw, + [CLKID_FIXED_PLL] = &a1_fixed_pll.hw, + [CLKID_HIFI_PLL] = &a1_hifi_pll.hw, + [CLKID_FCLK_DIV2] = &a1_fclk_div2.hw, + [CLKID_FCLK_DIV3] = &a1_fclk_div3.hw, + [CLKID_FCLK_DIV5] = &a1_fclk_div5.hw, + [CLKID_FCLK_DIV7] = &a1_fclk_div7.hw, + [CLKID_FCLK_DIV2_DIV] = &a1_fclk_div2_div.hw, + [CLKID_FCLK_DIV3_DIV] = &a1_fclk_div3_div.hw, + [CLKID_FCLK_DIV5_DIV] = &a1_fclk_div5_div.hw, + [CLKID_FCLK_DIV7_DIV] = &a1_fclk_div7_div.hw, + [NR_PLL_CLKS] = NULL, + }, + .num = NR_PLL_CLKS, +}; + +static struct clk_regmap *const a1_pll_regmaps[] = { + &a1_fixed_pll_dco, + &a1_fixed_pll, + &a1_hifi_pll, + &a1_fclk_div2, + &a1_fclk_div3, + &a1_fclk_div5, + &a1_fclk_div7, +}; + +static struct regmap_config clkc_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static int meson_a1_pll_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + void __iomem *base; + struct regmap *map; + int ret, i; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + map = devm_regmap_init_mmio(dev, base, &clkc_regmap_config); + if (IS_ERR(map)) + return PTR_ERR(map); + + /* Populate regmap for the regmap backed clocks */ + for (i = 0; i < ARRAY_SIZE(a1_pll_regmaps); i++) + a1_pll_regmaps[i]->map = map; + + for (i = 0; i < a1_pll_hw_onecell_data.num; i++) { + /* array might be sparse */ + if (!a1_pll_hw_onecell_data.hws[i]) + continue; + + ret = devm_clk_hw_register(dev, a1_pll_hw_onecell_data.hws[i]); + if (ret) { + dev_err(dev, "Clock registration failed\n"); + return ret; + } + } + + return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + &a1_pll_hw_onecell_data); +} + +static const struct of_device_id clkc_match_table[] = { + { .compatible = "amlogic,a1-pll-clkc", }, + {} +}; + +static struct platform_driver a1_pll_driver = { + .probe = meson_a1_pll_probe, + .driver = { + .name = "a1-pll-clkc", + .of_match_table = clkc_match_table, + }, +}; + +builtin_platform_driver(a1_pll_driver); diff --git a/drivers/clk/meson/a1-pll.h b/drivers/clk/meson/a1-pll.h new file mode 100644 index 000000000000..8ded267061ad --- /dev/null +++ b/drivers/clk/meson/a1-pll.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ +/* + * Copyright (c) 2019 Amlogic, Inc. All rights reserved. + */ + +#ifndef __A1_PLL_H +#define __A1_PLL_H + +/* PLL register offset */ +#define ANACTRL_FIXPLL_CTRL0 0x0 +#define ANACTRL_FIXPLL_CTRL1 0x4 +#define ANACTRL_FIXPLL_CTRL2 0x8 +#define ANACTRL_FIXPLL_CTRL3 0xc +#define ANACTRL_FIXPLL_CTRL4 0x10 +#define ANACTRL_FIXPLL_STS 0x14 +#define ANACTRL_SYSPLL_CTRL0 0x80 +#define ANACTRL_SYSPLL_CTRL1 0x84 +#define ANACTRL_SYSPLL_CTRL2 0x88 +#define ANACTRL_SYSPLL_CTRL3 0x8c +#define ANACTRL_SYSPLL_CTRL4 0x90 +#define ANACTRL_SYSPLL_STS 0x94 +#define ANACTRL_HIFIPLL_CTRL0 0xc0 +#define ANACTRL_HIFIPLL_CTRL1 0xc4 +#define ANACTRL_HIFIPLL_CTRL2 0xc8 +#define ANACTRL_HIFIPLL_CTRL3 0xcc +#define ANACTRL_HIFIPLL_CTRL4 0xd0 +#define ANACTRL_HIFIPLL_STS 0xd4 +#define ANACTRL_AUDDDS_CTRL0 0x100 +#define ANACTRL_AUDDDS_CTRL1 0x104 +#define ANACTRL_AUDDDS_CTRL2 0x108 +#define ANACTRL_AUDDDS_CTRL3 0x10c +#define ANACTRL_AUDDDS_CTRL4 0x110 +#define ANACTRL_AUDDDS_STS 0x114 +#define ANACTRL_MISCTOP_CTRL0 0x140 +#define ANACTRL_POR_CNTL 0x188 + +/* + * CLKID index values + * + * These indices are entirely contrived and do not map onto the hardware. + * It has now been decided to expose everything by default in the DT header: + * include/dt-bindings/clock/a1-pll-clkc.h. Only the clocks ids we don't want + * to expose, such as the internal muxes and dividers of composite clocks, + * will remain defined here. + */ +#define CLKID_FIXED_PLL_DCO 0 +#define CLKID_FCLK_DIV2_DIV 2 +#define CLKID_FCLK_DIV3_DIV 3 +#define CLKID_FCLK_DIV5_DIV 4 +#define CLKID_FCLK_DIV7_DIV 5 +#define NR_PLL_CLKS 11 + +/* include the CLKIDs that have been made part of the DT binding */ +#include + +#endif /* __A1_PLL_H */