From patchwork Wed Apr 5 19:59:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 13202402 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 4A435C7619A for ; Wed, 5 Apr 2023 20:00:54 +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=6lbD1UUh2PvGTnvO5v+2RUVEsZd4XBd4RWbzv5kwEIU=; b=E95Vw4F8m6zBB0 Gj7Kh0MOYoAzsmWYa2dhAfU0SKGW/+kFsdpSdABVCXInArC4T7BYoCNPFkSfxVG/VC7K7tyBRrosZ 5lmG/LBZ0FsAD+u45it6qQbWyAs6xq40zyZh2/ayWD0v7aTxuVyWefmCXia603rnRv3NsDC3X8j+L Q4ks0jzkUOp4zCMD83OGMd/YqHgd+ng5prlRofQ3oT05w1Zc3KR/UKGocrkSCXRZYi9XJZqjM6ECG uKD7dmGJVGcTi4+WQ42CZY/DMaO2U858FiWYVC6GEKULqr/BFz9NH5sjfJBnSU20gaR/8O8bEFwAB L2/HMU79+zTCoWAIg0QQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pk9Ib-005Ynv-0S; Wed, 05 Apr 2023 20:00:05 +0000 Received: from mx.sberdevices.ru ([45.89.227.171]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pk9IO-005YeI-3A; Wed, 05 Apr 2023 19:59:57 +0000 Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id AE8345FD4E; Wed, 5 Apr 2023 22:59:43 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1680724783; bh=vOy9h+QUJ2whwCCF8/93dWs2kJfYaNFhIALQcIq0vD4=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=OUNuUZX6Tf0/EpWN5fC3ZjJL6lrgJvyg49P95gUDqyoOx2pAkf9URjWsC474qkHU3 Blifl6rL1VAUxigan0RIxb3a6VdZagcUpW/A9+BKcfOkxOazApfU8R33FWhUoLKKyW mt/42SRzccRRPW+qWF26x85W7KyQ+t+ttXdExEMiTQPsp0ZL5Jbo3zu3Gq0tpM3KjX jny4GX/NCnr50wXzLqHOoXoct2SGxTP7HUY+aAcwD5mO5nuyf1ACZzYTaEsFMjQ29J uGpN5g8ceMfB7oZXi7Xm88+ACfC6Dy+sCVHMZKDJixcb8coW+BgYm+4lbvmtXi/EIu YNgNQpwmOkz6A== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mx.sberdevices.ru (Postfix) with ESMTP; Wed, 5 Apr 2023 22:59:43 +0300 (MSK) From: Dmitry Rokosov To: , , , , , , , CC: , , , , , , , , Dmitry Rokosov Subject: [PATCH v13 4/6] clk: meson: a1: add Amlogic A1 PLL clock controller driver Date: Wed, 5 Apr 2023 22:59:25 +0300 Message-ID: <20230405195927.13487-5-ddrokosov@sberdevices.ru> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20230405195927.13487-1-ddrokosov@sberdevices.ru> References: <20230405195927.13487-1-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: 2023/04/05 16:44:00 #21035356 X-KSMG-AntiVirus-Status: Clean, skipped X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230405_125953_528477_81698CE3 X-CRM114-Status: GOOD ( 28.91 ) 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 Introduce PLL clock controller for Amlogic A1 SoC family. The clock unit is an APB slave module that is designed for generating all of the internal and system clocks. The SoC uses an external 24MHz crystal; there are 4 internal PLLs: SYS_PLL/HIFI_PLL/USB_PLL/(FIXPLL), these PLLs generate 27 clock sources. Signed-off-by: Jian Hu Signed-off-by: Dmitry Rokosov --- drivers/clk/meson/Kconfig | 10 ++ drivers/clk/meson/Makefile | 1 + drivers/clk/meson/a1-pll.c | 356 +++++++++++++++++++++++++++++++++++++ drivers/clk/meson/a1-pll.h | 47 +++++ 4 files changed, 414 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..f56da2a4b000 100644 --- a/drivers/clk/meson/Kconfig +++ b/drivers/clk/meson/Kconfig @@ -99,6 +99,16 @@ 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 + tristate "Meson A1 SoC PLL controller support" + depends on ARM64 + select COMMON_CLK_MESON_REGMAP + select COMMON_CLK_MESON_PLL + help + Support for the PLL clock controller on Amlogic A113L based + device, A1 SoC Family. Say Y if you want A1 PLL clock controller + 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..f7ab11dcf2bc --- /dev/null +++ b/drivers/clk/meson/a1-pll.c @@ -0,0 +1,356 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019 Amlogic, Inc. All rights reserved. + * Author: Jian Hu + * + * Copyright (c) 2023, SberDevices. All Rights Reserved. + * Author: Dmitry Rokosov + */ + +#include +#include +#include +#include "a1-pll.h" +#include "clk-regmap.h" + +static struct clk_regmap 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 = "fixpll_in", + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap 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 *[]) { + &fixed_pll_dco.hw + }, + .num_parents = 1, + }, +}; + +static const struct pll_mult_range hifi_pll_mult_range = { + .min = 32, + .max = 64, +}; + +static const struct reg_sequence 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 = 0x01f18000 }, +}; + +static struct clk_regmap 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 = &hifi_pll_mult_range, + .init_regs = hifi_init_regs, + .init_count = ARRAY_SIZE(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 = "hifipll_in", + }, + .num_parents = 1, + }, +}; + +static struct clk_fixed_factor 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 *[]) { + &fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap 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 *[]) { + &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 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 *[]) { + &fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap 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 *[]) { + &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. + */ + .flags = CLK_IS_CRITICAL, + }, +}; + +static struct clk_fixed_factor 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 *[]) { + &fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap 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 *[]) { + &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. + */ + .flags = CLK_IS_CRITICAL, + }, +}; + +static struct clk_fixed_factor 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 *[]) { + &fixed_pll.hw + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap 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 *[]) { + &fclk_div7_div.hw + }, + .num_parents = 1, + }, +}; + +/* Array of all clocks registered by this provider */ +static struct clk_hw_onecell_data a1_pll_clks = { + .hws = { + [CLKID_FIXED_PLL_DCO] = &fixed_pll_dco.hw, + [CLKID_FIXED_PLL] = &fixed_pll.hw, + [CLKID_FCLK_DIV2_DIV] = &fclk_div2_div.hw, + [CLKID_FCLK_DIV3_DIV] = &fclk_div3_div.hw, + [CLKID_FCLK_DIV5_DIV] = &fclk_div5_div.hw, + [CLKID_FCLK_DIV7_DIV] = &fclk_div7_div.hw, + [CLKID_FCLK_DIV2] = &fclk_div2.hw, + [CLKID_FCLK_DIV3] = &fclk_div3.hw, + [CLKID_FCLK_DIV5] = &fclk_div5.hw, + [CLKID_FCLK_DIV7] = &fclk_div7.hw, + [CLKID_HIFI_PLL] = &hifi_pll.hw, + [NR_PLL_CLKS] = NULL, + }, + .num = NR_PLL_CLKS, +}; + +static struct clk_regmap *const a1_pll_regmaps[] = { + &fixed_pll_dco, + &fixed_pll, + &fclk_div2, + &fclk_div3, + &fclk_div5, + &fclk_div7, + &hifi_pll, +}; + +static struct regmap_config a1_pll_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static int meson_a1_pll_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + void __iomem *base; + struct regmap *map; + int clkid, i, err; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return dev_err_probe(dev, PTR_ERR(base), + "can't ioremap resource\n"); + + map = devm_regmap_init_mmio(dev, base, &a1_pll_regmap_cfg); + if (IS_ERR(map)) + return dev_err_probe(dev, PTR_ERR(map), + "can't init regmap mmio region\n"); + + /* Populate regmap for the regmap backed clocks */ + for (i = 0; i < ARRAY_SIZE(a1_pll_regmaps); i++) + a1_pll_regmaps[i]->map = map; + + /* Register clocks */ + for (clkid = 0; clkid < a1_pll_clks.num; clkid++) { + err = devm_clk_hw_register(dev, a1_pll_clks.hws[clkid]); + if (err) + return dev_err_probe(dev, err, + "clock[%d] registration failed\n", + clkid); + } + + return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + &a1_pll_clks); +} + +static const struct of_device_id a1_pll_clkc_match_table[] = { + { .compatible = "amlogic,a1-pll-clkc", }, + {}, +}; +MODULE_DEVICE_TABLE(of, a1_pll_clkc_match_table); + +static struct platform_driver a1_pll_clkc_driver = { + .probe = meson_a1_pll_probe, + .driver = { + .name = "a1-pll-clkc", + .of_match_table = of_match_ptr(a1_pll_clkc_match_table), + }, +}; + +module_platform_driver(a1_pll_clkc_driver); +MODULE_AUTHOR("Jian Hu "); +MODULE_AUTHOR("Dmitry Rokosov "); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/meson/a1-pll.h b/drivers/clk/meson/a1-pll.h new file mode 100644 index 000000000000..69e5e31790f2 --- /dev/null +++ b/drivers/clk/meson/a1-pll.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Amlogic Meson-A1 PLL Clock Controller internals + * + * Copyright (c) 2019 Amlogic, Inc. All rights reserved. + * Author: Jian Hu + * + * Copyright (c) 2023, SberDevices. All Rights Reserved. + * Author: Dmitry Rokosov + */ + +#ifndef __A1_PLL_H +#define __A1_PLL_H + +#include "clk-pll.h" + +/* PLL register offset */ +#define ANACTRL_FIXPLL_CTRL0 0x0 +#define ANACTRL_FIXPLL_CTRL1 0x4 +#define ANACTRL_FIXPLL_STS 0x14 +#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 + +/* include the CLKIDs that have been made part of the DT binding */ +#include + +/* + * CLKID index values for internal clocks + * + * 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 + +#endif /* __A1_PLL_H */