clk: renesas: cpg-mssr: Add support for R-Car V3U (17bcc803) · Commits · EulixOS / Software / Kernel

drivers/clk/renesas/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ config CLK_RENESAS
		select CLK_R8A77980 if ARCH_R8A77980
		select CLK_R8A77990 if ARCH_R8A77990
		select CLK_R8A77995 if ARCH_R8A77995
		select CLK_R8A779A0 if ARCH_R8A779A0
		select CLK_R9A06G032 if ARCH_R9A06G032
		select CLK_SH73A0 if ARCH_SH73A0

		@@ -145,6 +146,10 @@ config CLK_R8A77995
		bool "R-Car D3 clock support" if COMPILE_TEST
		select CLK_RCAR_GEN3_CPG

		config CLK_R8A779A0
		bool "R-Car V3U clock support" if COMPILE_TEST
		select CLK_RENESAS_CPG_MSSR

		config CLK_R9A06G032
		bool "Renesas R9A06G032 clock driver"
		help

drivers/clk/renesas/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@ obj-$(CONFIG_CLK_R8A77970) += r8a77970-cpg-mssr.o
		obj-$(CONFIG_CLK_R8A77980) += r8a77980-cpg-mssr.o
		obj-$(CONFIG_CLK_R8A77990) += r8a77990-cpg-mssr.o
		obj-$(CONFIG_CLK_R8A77995) += r8a77995-cpg-mssr.o
		obj-$(CONFIG_CLK_R8A779A0) += r8a779a0-cpg-mssr.o
		obj-$(CONFIG_CLK_R9A06G032) += r9a06g032-clocks.o
		obj-$(CONFIG_CLK_SH73A0) += clk-sh73a0.o

drivers/clk/renesas/r8a779a0-cpg-mssr.c

0 → 100644

+276 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0
		/*
		* r8a779a0 Clock Pulse Generator / Module Standby and Software Reset
		*
		* Copyright (C) 2020 Renesas Electronics Corp.
		*
		* Based on r8a7795-cpg-mssr.c
		*
		* Copyright (C) 2015 Glider bvba
		* Copyright (C) 2015 Renesas Electronics Corp.
		*/

		#include <linux/bug.h>
		#include <linux/bitfield.h>
		#include <linux/clk.h>
		#include <linux/clk-provider.h>
		#include <linux/device.h>
		#include <linux/err.h>
		#include <linux/init.h>
		#include <linux/io.h>
		#include <linux/kernel.h>
		#include <linux/pm.h>
		#include <linux/slab.h>
		#include <linux/soc/renesas/rcar-rst.h>

		#include <dt-bindings/clock/r8a779a0-cpg-mssr.h>

		#include "renesas-cpg-mssr.h"
		#include "rcar-gen3-cpg.h"

		enum rcar_r8a779a0_clk_types {
		CLK_TYPE_R8A779A0_MAIN = CLK_TYPE_CUSTOM,
		CLK_TYPE_R8A779A0_PLL1,
		CLK_TYPE_R8A779A0_PLL2X_3X, /* PLL[23][01] */
		CLK_TYPE_R8A779A0_PLL5,
		CLK_TYPE_R8A779A0_MDSEL, /* Select parent/divider using mode pin */
		CLK_TYPE_R8A779A0_OSC, /* OSC EXTAL predivider and fixed divider */
		};

		struct rcar_r8a779a0_cpg_pll_config {
		u8 extal_div;
		u8 pll1_mult;
		u8 pll1_div;
		u8 pll5_mult;
		u8 pll5_div;
		u8 osc_prediv;
		};

		enum clk_ids {
		/* Core Clock Outputs exported to DT */
		LAST_DT_CORE_CLK = R8A779A0_CLK_OSC,

		/* External Input Clocks */
		CLK_EXTAL,
		CLK_EXTALR,

		/* Internal Core Clocks */
		CLK_MAIN,
		CLK_PLL1,
		CLK_PLL20,
		CLK_PLL21,
		CLK_PLL30,
		CLK_PLL31,
		CLK_PLL5,
		CLK_PLL1_DIV2,
		CLK_PLL20_DIV2,
		CLK_PLL21_DIV2,
		CLK_PLL30_DIV2,
		CLK_PLL31_DIV2,
		CLK_PLL5_DIV2,
		CLK_PLL5_DIV4,
		CLK_S1,
		CLK_S2,
		CLK_S3,
		CLK_SDSRC,
		CLK_RPCSRC,
		CLK_OCO,

		/* Module Clocks */
		MOD_CLK_BASE
		};

		#define DEF_PLL(_name, _id, _offset) \
		DEF_BASE(_name, _id, CLK_TYPE_R8A779A0_PLL2X_3X, CLK_MAIN, \
		.offset = _offset)

		static const struct cpg_core_clk r8a779a0_core_clks[] __initconst = {
		/* External Clock Inputs */
		DEF_INPUT("extal", CLK_EXTAL),
		DEF_INPUT("extalr", CLK_EXTALR),

		/* Internal Core Clocks */
		DEF_BASE(".main", CLK_MAIN, CLK_TYPE_R8A779A0_MAIN, CLK_EXTAL),
		DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_R8A779A0_PLL1, CLK_MAIN),
		DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_R8A779A0_PLL5, CLK_MAIN),
		DEF_PLL(".pll20", CLK_PLL20, 0x0834),
		DEF_PLL(".pll21", CLK_PLL21, 0x0838),
		DEF_PLL(".pll30", CLK_PLL30, 0x083c),
		DEF_PLL(".pll31", CLK_PLL31, 0x0840),

		DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
		DEF_FIXED(".pll20_div2", CLK_PLL20_DIV2, CLK_PLL20, 2, 1),
		DEF_FIXED(".pll21_div2", CLK_PLL21_DIV2, CLK_PLL21, 2, 1),
		DEF_FIXED(".pll30_div2", CLK_PLL30_DIV2, CLK_PLL30, 2, 1),
		DEF_FIXED(".pll31_div2", CLK_PLL31_DIV2, CLK_PLL31, 2, 1),
		DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2, CLK_PLL5, 2, 1),
		DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4, CLK_PLL5_DIV2, 2, 1),
		DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 2, 1),
		DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 4, 1),
		DEF_RATE(".oco", CLK_OCO, 32768),

		/* Core Clock Outputs */
		DEF_FIXED("zx", R8A779A0_CLK_ZX, CLK_PLL20_DIV2, 2, 1),
		DEF_FIXED("s1d1", R8A779A0_CLK_S1D1, CLK_S1, 1, 1),
		DEF_FIXED("s1d2", R8A779A0_CLK_S1D2, CLK_S1, 2, 1),
		DEF_FIXED("s1d4", R8A779A0_CLK_S1D4, CLK_S1, 4, 1),
		DEF_FIXED("s1d8", R8A779A0_CLK_S1D8, CLK_S1, 8, 1),
		DEF_FIXED("s1d12", R8A779A0_CLK_S1D12, CLK_S1, 12, 1),
		DEF_FIXED("s3d1", R8A779A0_CLK_S3D1, CLK_S3, 1, 1),
		DEF_FIXED("s3d2", R8A779A0_CLK_S3D2, CLK_S3, 2, 1),
		DEF_FIXED("s3d4", R8A779A0_CLK_S3D4, CLK_S3, 4, 1),
		DEF_FIXED("zs", R8A779A0_CLK_ZS, CLK_PLL1_DIV2, 4, 1),
		DEF_FIXED("zt", R8A779A0_CLK_ZT, CLK_PLL1_DIV2, 2, 1),
		DEF_FIXED("ztr", R8A779A0_CLK_ZTR, CLK_PLL1_DIV2, 2, 1),
		DEF_FIXED("zr", R8A779A0_CLK_ZR, CLK_PLL1_DIV2, 1, 1),
		DEF_FIXED("dsi", R8A779A0_CLK_DSI, CLK_PLL5_DIV4, 1, 1),
		DEF_FIXED("cnndsp", R8A779A0_CLK_CNNDSP, CLK_PLL5_DIV4, 1, 1),
		DEF_FIXED("vip", R8A779A0_CLK_VIP, CLK_PLL5, 5, 1),
		DEF_FIXED("adgh", R8A779A0_CLK_ADGH, CLK_PLL5_DIV4, 1, 1),
		DEF_FIXED("icu", R8A779A0_CLK_ICU, CLK_PLL5_DIV4, 2, 1),
		DEF_FIXED("icud2", R8A779A0_CLK_ICUD2, CLK_PLL5_DIV4, 4, 1),
		DEF_FIXED("vcbus", R8A779A0_CLK_VCBUS, CLK_PLL5_DIV4, 1, 1),
		DEF_FIXED("cbfusa", R8A779A0_CLK_CBFUSA, CLK_MAIN, 2, 1),

		DEF_DIV6P1("mso", R8A779A0_CLK_MSO, CLK_PLL5_DIV4, 0x87c),
		DEF_DIV6P1("canfd", R8A779A0_CLK_CANFD, CLK_PLL5_DIV4, 0x878),
		DEF_DIV6P1("csi0", R8A779A0_CLK_CSI0, CLK_PLL5_DIV4, 0x880),

		DEF_GEN3_OSC("osc", R8A779A0_CLK_OSC, CLK_EXTAL, 8),
		DEF_GEN3_MDSEL("r", R8A779A0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
		};

		static const struct mssr_mod_clk r8a779a0_mod_clks[] __initconst = {
		DEF_MOD("scif0", 702, R8A779A0_CLK_S1D8),
		DEF_MOD("scif1", 703, R8A779A0_CLK_S1D8),
		DEF_MOD("scif3", 704, R8A779A0_CLK_S1D8),
		DEF_MOD("scif4", 705, R8A779A0_CLK_S1D8),
		};

		static spinlock_t cpg_lock;

		static const struct rcar_r8a779a0_cpg_pll_config *cpg_pll_config __initdata;
		static unsigned int cpg_clk_extalr __initdata;
		static u32 cpg_mode __initdata;

		struct clk * __init rcar_r8a779a0_cpg_clk_register(struct device *dev,
		const struct cpg_core_clk core, const struct cpg_mssr_info info,
		struct clk *clks, void __iomem base,
		struct raw_notifier_head *notifiers)
		{
		const struct clk *parent;
		unsigned int mult = 1;
		unsigned int div = 1;
		u32 value;

		parent = clks[core->parent & 0xffff]; /* some types use high bits */
		if (IS_ERR(parent))
		return ERR_CAST(parent);

		switch (core->type) {
		case CLK_TYPE_R8A779A0_MAIN:
		div = cpg_pll_config->extal_div;
		break;

		case CLK_TYPE_R8A779A0_PLL1:
		mult = cpg_pll_config->pll1_mult;
		div = cpg_pll_config->pll1_div;
		break;

		case CLK_TYPE_R8A779A0_PLL2X_3X:
		value = readl(base + core->offset);
		mult = (((value >> 24) & 0x7f) + 1) * 2;
		break;

		case CLK_TYPE_R8A779A0_PLL5:
		mult = cpg_pll_config->pll5_mult;
		div = cpg_pll_config->pll5_div;
		break;

		case CLK_TYPE_R8A779A0_MDSEL:
		/*
		* Clock selectable between two parents and two fixed dividers
		* using a mode pin
		*/
		if (cpg_mode & BIT(core->offset)) {
		div = core->div & 0xffff;
		} else {
		parent = clks[core->parent >> 16];
		if (IS_ERR(parent))
		return ERR_CAST(parent);
		div = core->div >> 16;
		}
		mult = 1;
		break;

		case CLK_TYPE_R8A779A0_OSC:
		/*
		* Clock combining OSC EXTAL predivider and a fixed divider
		*/
		div = cpg_pll_config->osc_prediv * core->div;
		break;

		default:
		return ERR_PTR(-EINVAL);
		}

		return clk_register_fixed_factor(NULL, core->name,
		__clk_get_name(parent), 0, mult, div);
		}

		/*
		* CPG Clock Data
		*/
		/*
		* MD EXTAL PLL1 PLL20 PLL30 PLL4 PLL5 OSC
		* 14 13 (MHz) 21 31
		* --------------------------------------------------------
		* 0 0 16.66 x 1 x128 x216 x128 x144 x192 /16
		* 0 1 20 x 1 x106 x180 x106 x120 x160 /19
		* 1 0 Prohibited setting
		* 1 1 33.33 / 2 x128 x216 x128 x144 x192 /32
		*/
		#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) \| \
		(((md) & BIT(13)) >> 13))

		static const struct rcar_r8a779a0_cpg_pll_config cpg_pll_configs[4] = {
		/* EXTAL div PLL1 mult/div PLL5 mult/div OSC prediv */
		{ 1, 128, 1, 192, 1, 16, },
		{ 1, 106, 1, 160, 1, 19, },
		{ 0, 0, 0, 0, 0, 0, },
		{ 2, 128, 1, 192, 1, 32, },
		};

		static int __init r8a779a0_cpg_mssr_init(struct device *dev)
		{
		int error;

		error = rcar_rst_read_mode_pins(&cpg_mode);
		if (error)
		return error;

		cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
		cpg_clk_extalr = CLK_EXTALR;
		spin_lock_init(&cpg_lock);

		return 0;
		}

		const struct cpg_mssr_info r8a779a0_cpg_mssr_info __initconst = {
		/* Core Clocks */
		.core_clks = r8a779a0_core_clks,
		.num_core_clks = ARRAY_SIZE(r8a779a0_core_clks),
		.last_dt_core_clk = LAST_DT_CORE_CLK,
		.num_total_core_clks = MOD_CLK_BASE,

		/* Module Clocks */
		.mod_clks = r8a779a0_mod_clks,
		.num_mod_clks = ARRAY_SIZE(r8a779a0_mod_clks),
		.num_hw_mod_clks = 15 * 32,

		/* Callbacks */
		.init = r8a779a0_cpg_mssr_init,
		.cpg_clk_register = rcar_r8a779a0_cpg_clk_register,

		.reg_layout = CLK_REG_LAYOUT_RCAR_V3U,
		};

drivers/clk/renesas/renesas-cpg-mssr.c

+32 −1

Original line number	Diff line number	Diff line
		@@ -57,6 +57,11 @@ static const u16 mstpsr[] = {
		0x9A0, 0x9A4, 0x9A8, 0x9AC,
		};

		static const u16 mstpsr_for_v3u[] = {
		0x2E00, 0x2E04, 0x2E08, 0x2E0C, 0x2E10, 0x2E14, 0x2E18, 0x2E1C,
		0x2E20, 0x2E24, 0x2E28, 0x2E2C, 0x2E30, 0x2E34, 0x2E38,
		};

		/*
		* System Module Stop Control Register offsets
		*/
		@@ -66,6 +71,11 @@ static const u16 smstpcr[] = {
		0x990, 0x994, 0x998, 0x99C,
		};

		static const u16 mstpcr_for_v3u[] = {
		0x2D00, 0x2D04, 0x2D08, 0x2D0C, 0x2D10, 0x2D14, 0x2D18, 0x2D1C,
		0x2D20, 0x2D24, 0x2D28, 0x2D2C, 0x2D30, 0x2D34, 0x2D38,
		};

		/*
		* Standby Control Register offsets (RZ/A)
		* Base address is FRQCR register
		@@ -85,6 +95,11 @@ static const u16 srcr[] = {
		0x920, 0x924, 0x928, 0x92C,
		};

		static const u16 srcr_for_v3u[] = {
		0x2C00, 0x2C04, 0x2C08, 0x2C0C, 0x2C10, 0x2C14, 0x2C18, 0x2C1C,
		0x2C20, 0x2C24, 0x2C28, 0x2C2C, 0x2C30, 0x2C34, 0x2C38,
		};

		/* Realtime Module Stop Control Register offsets */
		#define RMSTPCR(i) (smstpcr[i] - 0x20)

		@@ -98,6 +113,11 @@ static const u16 srstclr[] = {
		0x960, 0x964, 0x968, 0x96C,
		};

		static const u16 srstclr_for_v3u[] = {
		0x2C80, 0x2C84, 0x2C88, 0x2C8C, 0x2C90, 0x2C94, 0x2C98, 0x2C9C,
		0x2CA0, 0x2CA4, 0x2CA8, 0x2CAC, 0x2CB0, 0x2CB4, 0x2CB8,
		};

		/**
		* Clock Pulse Generator / Module Standby and Software Reset Private Data
		*
		@@ -141,7 +161,7 @@ struct cpg_mssr_priv {
		struct {
		u32 mask;
		u32 val;
		} smstpcr_saved[ARRAY_SIZE(smstpcr)];
		} smstpcr_saved[ARRAY_SIZE(mstpsr_for_v3u)];

		struct clk *clks[];
		};
		@@ -804,6 +824,12 @@ static const struct of_device_id cpg_mssr_match[] = {
		.compatible = "renesas,r8a77995-cpg-mssr",
		.data = &r8a77995_cpg_mssr_info,
		},
		#endif
		#ifdef CONFIG_CLK_R8A779A0
		{
		.compatible = "renesas,r8a779a0-cpg-mssr",
		.data = &r8a779a0_cpg_mssr_info,
		},
		#endif
		{ /* sentinel */ }
		};
		@@ -947,6 +973,11 @@ static int __init cpg_mssr_common_init(struct device *dev,
		priv->reset_clear_regs = srstclr;
		} else if (priv->reg_layout == CLK_REG_LAYOUT_RZ_A) {
		priv->control_regs = stbcr;
		} else if (priv->reg_layout == CLK_REG_LAYOUT_RCAR_V3U) {
		priv->status_regs = mstpsr_for_v3u;
		priv->control_regs = mstpcr_for_v3u;
		priv->reset_regs = srcr_for_v3u;
		priv->reset_clear_regs = srstclr_for_v3u;
		} else {
		error = -EINVAL;
		goto out_err;

drivers/clk/renesas/renesas-cpg-mssr.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -88,6 +88,7 @@ struct device_node;
		enum clk_reg_layout {
		CLK_REG_LAYOUT_RCAR_GEN2_AND_GEN3 = 0,
		CLK_REG_LAYOUT_RZ_A,
		CLK_REG_LAYOUT_RCAR_V3U,
		};

		/**
		@@ -176,6 +177,7 @@ extern const struct cpg_mssr_info r8a77970_cpg_mssr_info;
		extern const struct cpg_mssr_info r8a77980_cpg_mssr_info;
		extern const struct cpg_mssr_info r8a77990_cpg_mssr_info;
		extern const struct cpg_mssr_info r8a77995_cpg_mssr_info;
		extern const struct cpg_mssr_info r8a779a0_cpg_mssr_info;

		void __init cpg_mssr_early_init(struct device_node *np,
		const struct cpg_mssr_info *info);