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Commit d71e851d authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

clk: renesas: cpg-mssr: Add R8A77995 support 



Add R-Car D3 (R8A77995) Clock Pulse Generator / Module Standby and
Software Reset support, using the CPG/MSSR driver core and the common
R-Car Gen3 CPG code.

Based on the R-Car Series, 3rd Generation Hardware User's Manual, Rev.
0.55, Jun. 30, 2017.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
parent 696997e0

Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt

+2 −1
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ Required Properties: 
      - "renesas,r8a7794-cpg-mssr" for the r8a7794 SoC (R-Car E2)

      - "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC (R-Car H3)

      - "renesas,r8a7796-cpg-mssr" for the r8a7796 SoC (R-Car M3-W)

      - "renesas,r8a77995-cpg-mssr" for the r8a77995 SoC (R-Car D3)



  - reg: Base address and length of the memory resource used by the CPG/MSSR

    block
@@ -30,7 +31,7 @@ Required Properties: 
    clock-names

  - clock-names: List of external parent clock names. Valid names are:

      - "extal" (r8a7743, r8a7745, r8a7790, r8a7791, r8a7792, r8a7793, r8a7794,

		 r8a7795, r8a7796)

		 r8a7795, r8a7796, r8a77995)

      - "extalr" (r8a7795, r8a7796)

      - "usb_extal" (r8a7743, r8a7745, r8a7790, r8a7791, r8a7793, r8a7794)

drivers/clk/renesas/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ config CLK_RENESAS 
	select CLK_R8A7794 if ARCH_R8A7794

	select CLK_R8A7795 if ARCH_R8A7795

	select CLK_R8A7796 if ARCH_R8A7796

	select CLK_R8A77995 if ARCH_R8A77995

	select CLK_SH73A0 if ARCH_SH73A0



if CLK_RENESAS
@@ -94,6 +95,10 @@ config CLK_R8A7796 
	bool "R-Car M3-W clock support" if COMPILE_TEST

	select CLK_RCAR_GEN3_CPG



config CLK_R8A77995

	bool "R-Car D3 clock support" if COMPILE_TEST

	select CLK_RCAR_GEN3_CPG



config CLK_SH73A0

	bool "SH-Mobile AG5 clock support" if COMPILE_TEST

	select CLK_RENESAS_CPG_MSTP

drivers/clk/renesas/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ obj-$(CONFIG_CLK_R8A7792) += r8a7792-cpg-mssr.o 
obj-$(CONFIG_CLK_R8A7794)		+= r8a7794-cpg-mssr.o

obj-$(CONFIG_CLK_R8A7795)		+= r8a7795-cpg-mssr.o

obj-$(CONFIG_CLK_R8A7796)		+= r8a7796-cpg-mssr.o

obj-$(CONFIG_CLK_R8A77995)		+= r8a77995-cpg-mssr.o

obj-$(CONFIG_CLK_SH73A0)		+= clk-sh73a0.o



# Family

drivers/clk/renesas/r8a77995-cpg-mssr.c

0 → 100644
+236 −0
Original line number Diff line number Diff line 
/*

 * r8a77995 Clock Pulse Generator / Module Standby and Software Reset

 *

 * Copyright (C) 2017 Glider bvba

 *

 * Based on r8a7795-cpg-mssr.c

 *

 * Copyright (C) 2015 Glider bvba

 * Copyright (C) 2015 Renesas Electronics Corp.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; version 2 of the License.

 */



#include <linux/device.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/soc/renesas/rcar-rst.h>



#include <dt-bindings/clock/r8a77995-cpg-mssr.h>



#include "renesas-cpg-mssr.h"

#include "rcar-gen3-cpg.h"



enum clk_ids {

	/* Core Clock Outputs exported to DT */

	LAST_DT_CORE_CLK = R8A77995_CLK_CP,



	/* External Input Clocks */

	CLK_EXTAL,



	/* Internal Core Clocks */

	CLK_MAIN,

	CLK_PLL0,

	CLK_PLL1,

	CLK_PLL3,

	CLK_PLL0D2,

	CLK_PLL0D3,

	CLK_PLL0D5,

	CLK_PLL1D2,

	CLK_PE,

	CLK_S0,

	CLK_S1,

	CLK_S2,

	CLK_S3,

	CLK_SDSRC,

	CLK_SSPSRC,



	/* Module Clocks */

	MOD_CLK_BASE

};



static const struct cpg_core_clk r8a77995_core_clks[] __initconst = {

	/* External Clock Inputs */

	DEF_INPUT("extal",     CLK_EXTAL),



	/* Internal Core Clocks */

	DEF_BASE(".main",      CLK_MAIN, CLK_TYPE_GEN3_MAIN,       CLK_EXTAL),

	DEF_BASE(".pll1",      CLK_PLL1, CLK_TYPE_GEN3_PLL1,       CLK_MAIN),

	DEF_BASE(".pll3",      CLK_PLL3, CLK_TYPE_GEN3_PLL3,       CLK_MAIN),



	DEF_FIXED(".pll0",     CLK_PLL0,           CLK_MAIN,	   4, 250),

	DEF_FIXED(".pll0d2",   CLK_PLL0D2,         CLK_PLL0,       2, 1),

	DEF_FIXED(".pll0d3",   CLK_PLL0D3,         CLK_PLL0,       3, 1),

	DEF_FIXED(".pll0d5",   CLK_PLL0D5,         CLK_PLL0,       5, 1),

	DEF_FIXED(".pll1d2",   CLK_PLL1D2,         CLK_PLL1,       2, 1),

	DEF_FIXED(".pe",       CLK_PE,             CLK_PLL0D3,     4, 1),

	DEF_FIXED(".s0",       CLK_S0,             CLK_PLL1,       2, 1),

	DEF_FIXED(".s1",       CLK_S1,             CLK_PLL1,       3, 1),

	DEF_FIXED(".s2",       CLK_S2,             CLK_PLL1,       4, 1),

	DEF_FIXED(".s3",       CLK_S3,             CLK_PLL1,       6, 1),

	DEF_FIXED(".sdsrc",    CLK_SDSRC,          CLK_PLL1,       2, 1),



	/* Core Clock Outputs */

	DEF_FIXED("z2",        R8A77995_CLK_Z2,    CLK_PLL0D3,     1, 1),

	DEF_FIXED("ztr",       R8A77995_CLK_ZTR,   CLK_PLL1,       6, 1),

	DEF_FIXED("zt",        R8A77995_CLK_ZT,    CLK_PLL1,       4, 1),

	DEF_FIXED("zx",        R8A77995_CLK_ZX,    CLK_PLL1,       3, 1),

	DEF_FIXED("s0d1",      R8A77995_CLK_S0D1,  CLK_S0,         1, 1),

	DEF_FIXED("s1d1",      R8A77995_CLK_S1D1,  CLK_S1,         1, 1),

	DEF_FIXED("s1d2",      R8A77995_CLK_S1D2,  CLK_S1,         2, 1),

	DEF_FIXED("s1d4",      R8A77995_CLK_S1D4,  CLK_S1,         4, 1),

	DEF_FIXED("s2d1",      R8A77995_CLK_S2D1,  CLK_S2,         1, 1),

	DEF_FIXED("s2d2",      R8A77995_CLK_S2D2,  CLK_S2,         2, 1),

	DEF_FIXED("s2d4",      R8A77995_CLK_S2D4,  CLK_S2,         4, 1),

	DEF_FIXED("s3d1",      R8A77995_CLK_S3D1,  CLK_S3,         1, 1),

	DEF_FIXED("s3d2",      R8A77995_CLK_S3D2,  CLK_S3,         2, 1),

	DEF_FIXED("s3d4",      R8A77995_CLK_S3D4,  CLK_S3,         4, 1),



	DEF_FIXED("cl",        R8A77995_CLK_CL,    CLK_PLL1,      48, 1),

	DEF_FIXED("cp",        R8A77995_CLK_CP,    CLK_EXTAL,      2, 1),

	DEF_FIXED("osc",       R8A77995_CLK_OSC,   CLK_EXTAL,    384, 1),

	DEF_FIXED("r",         R8A77995_CLK_R,     CLK_EXTAL,   1536, 1),



	DEF_GEN3_PE("s1d4c",   R8A77995_CLK_S1D4C, CLK_S1, 4, CLK_PE, 2),

	DEF_GEN3_PE("s3d1c",   R8A77995_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),

	DEF_GEN3_PE("s3d2c",   R8A77995_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),

	DEF_GEN3_PE("s3d4c",   R8A77995_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),



	DEF_GEN3_SD("sd0",     R8A77995_CLK_SD0,   CLK_SDSRC,     0x268),



	DEF_DIV6P1("canfd",    R8A77995_CLK_CANFD, CLK_PLL0D3,    0x244),

	DEF_DIV6P1("mso",      R8A77995_CLK_MSO,   CLK_PLL1D2,    0x014),

};



static const struct mssr_mod_clk r8a77995_mod_clks[] __initconst = {

	DEF_MOD("scif5",		 202,	R8A77995_CLK_S3D4C),

	DEF_MOD("scif4",		 203,	R8A77995_CLK_S3D4C),

	DEF_MOD("scif3",		 204,	R8A77995_CLK_S3D4C),

	DEF_MOD("scif1",		 206,	R8A77995_CLK_S3D4C),

	DEF_MOD("scif0",		 207,	R8A77995_CLK_S3D4C),

	DEF_MOD("msiof3",		 208,	R8A77995_CLK_MSO),

	DEF_MOD("msiof2",		 209,	R8A77995_CLK_MSO),

	DEF_MOD("msiof1",		 210,	R8A77995_CLK_MSO),

	DEF_MOD("msiof0",		 211,	R8A77995_CLK_MSO),

	DEF_MOD("sys-dmac2",		 217,	R8A77995_CLK_S3D1),

	DEF_MOD("sys-dmac1",		 218,	R8A77995_CLK_S3D1),

	DEF_MOD("sys-dmac0",		 219,	R8A77995_CLK_S3D1),

	DEF_MOD("cmt3",			 300,	R8A77995_CLK_R),

	DEF_MOD("cmt2",			 301,	R8A77995_CLK_R),

	DEF_MOD("cmt1",			 302,	R8A77995_CLK_R),

	DEF_MOD("cmt0",			 303,	R8A77995_CLK_R),

	DEF_MOD("scif2",		 310,	R8A77995_CLK_S3D4C),

	DEF_MOD("emmc0",		 312,	R8A77995_CLK_SD0),

	DEF_MOD("usb-dmac0",		 330,	R8A77995_CLK_S3D1),

	DEF_MOD("usb-dmac1",		 331,	R8A77995_CLK_S3D1),

	DEF_MOD("rwdt",			 402,	R8A77995_CLK_R),

	DEF_MOD("intc-ex",		 407,	R8A77995_CLK_CP),

	DEF_MOD("intc-ap",		 408,	R8A77995_CLK_S3D1),

	DEF_MOD("audmac0",		 502,	R8A77995_CLK_S3D1),

	DEF_MOD("hscif3",		 517,	R8A77995_CLK_S3D1C),

	DEF_MOD("hscif0",		 520,	R8A77995_CLK_S3D1C),

	DEF_MOD("thermal",		 522,	R8A77995_CLK_CP),

	DEF_MOD("pwm",			 523,	R8A77995_CLK_S3D4C),

	DEF_MOD("fcpvd1",		 602,	R8A77995_CLK_S1D2),

	DEF_MOD("fcpvd0",		 603,	R8A77995_CLK_S1D2),

	DEF_MOD("fcpvbs",		 607,	R8A77995_CLK_S0D1),

	DEF_MOD("vspd1",		 622,	R8A77995_CLK_S1D2),

	DEF_MOD("vspd0",		 623,	R8A77995_CLK_S1D2),

	DEF_MOD("vspbs",		 627,	R8A77995_CLK_S0D1),

	DEF_MOD("ehci0",		 703,	R8A77995_CLK_S3D2),

	DEF_MOD("hsusb",		 704,	R8A77995_CLK_S3D2),

	DEF_MOD("du1",			 723,	R8A77995_CLK_S2D1),

	DEF_MOD("du0",			 724,	R8A77995_CLK_S2D1),

	DEF_MOD("lvds",			 727,	R8A77995_CLK_S2D1),

	DEF_MOD("vin7",			 804,	R8A77995_CLK_S1D2),

	DEF_MOD("vin6",			 805,	R8A77995_CLK_S1D2),

	DEF_MOD("vin5",			 806,	R8A77995_CLK_S1D2),

	DEF_MOD("vin4",			 807,	R8A77995_CLK_S1D2),

	DEF_MOD("etheravb",		 812,	R8A77995_CLK_S3D2),

	DEF_MOD("imr0",			 823,	R8A77995_CLK_S1D2),

	DEF_MOD("gpio6",		 906,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio5",		 907,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio4",		 908,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio3",		 909,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio2",		 910,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio1",		 911,	R8A77995_CLK_S3D4),

	DEF_MOD("gpio0",		 912,	R8A77995_CLK_S3D4),

	DEF_MOD("can-fd",		 914,	R8A77995_CLK_S3D2),

	DEF_MOD("can-if1",		 915,	R8A77995_CLK_S3D4),

	DEF_MOD("can-if0",		 916,	R8A77995_CLK_S3D4),

	DEF_MOD("i2c3",			 928,	R8A77995_CLK_S3D2),

	DEF_MOD("i2c2",			 929,	R8A77995_CLK_S3D2),

	DEF_MOD("i2c1",			 930,	R8A77995_CLK_S3D2),

	DEF_MOD("i2c0",			 931,	R8A77995_CLK_S3D2),

	DEF_MOD("ssi-all",		1005,	R8A77995_CLK_S3D4),

	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),

	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),

	DEF_MOD("scu-all",		1017,	R8A77995_CLK_S3D4),

	DEF_MOD("scu-dvc1",		1018,	MOD_CLK_ID(1017)),

	DEF_MOD("scu-dvc0",		1019,	MOD_CLK_ID(1017)),

	DEF_MOD("scu-ctu1-mix1",	1020,	MOD_CLK_ID(1017)),

	DEF_MOD("scu-ctu0-mix0",	1021,	MOD_CLK_ID(1017)),

	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),

	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),

};



static const unsigned int r8a77995_crit_mod_clks[] __initconst = {

	MOD_CLK_ID(408),	/* INTC-AP (GIC) */

};





/*

 * CPG Clock Data

 */



/*

 * MD19		EXTAL (MHz)	PLL0		PLL1		PLL3

 *--------------------------------------------------------------------

 * 0		48 x 1		x250/4		x100/3		x100/3

 * 1		48 x 1		x250/4		x100/3		x116/6

 */

#define CPG_PLL_CONFIG_INDEX(md)	(((md) & BIT(19)) >> 19)



static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = {

	/* EXTAL div	PLL1 mult/div	PLL3 mult/div */

	{ 1,		100,	3,	100,	3,	},

	{ 1,		100,	3,	116,	6,	},

};



static int __init r8a77995_cpg_mssr_init(struct device *dev)

{

	const struct rcar_gen3_cpg_pll_config *cpg_pll_config;

	u32 cpg_mode;

	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)];



	return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode);

}



const struct cpg_mssr_info r8a77995_cpg_mssr_info __initconst = {

	/* Core Clocks */

	.core_clks = r8a77995_core_clks,

	.num_core_clks = ARRAY_SIZE(r8a77995_core_clks),

	.last_dt_core_clk = LAST_DT_CORE_CLK,

	.num_total_core_clks = MOD_CLK_BASE,



	/* Module Clocks */

	.mod_clks = r8a77995_mod_clks,

	.num_mod_clks = ARRAY_SIZE(r8a77995_mod_clks),

	.num_hw_mod_clks = 12 * 32,



	/* Critical Module Clocks */

	.crit_mod_clks = r8a77995_crit_mod_clks,

	.num_crit_mod_clks = ARRAY_SIZE(r8a77995_crit_mod_clks),



	/* Callbacks */

	.init = r8a77995_cpg_mssr_init,

	.cpg_clk_register = rcar_gen3_cpg_clk_register,

};

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

+6 −0
Original line number Diff line number Diff line
@@ -679,6 +679,12 @@ static const struct of_device_id cpg_mssr_match[] = { 
		.compatible = "renesas,r8a7796-cpg-mssr",

		.data = &r8a7796_cpg_mssr_info,

	},

#endif

#ifdef CONFIG_CLK_R8A77995

	{

		.compatible = "renesas,r8a77995-cpg-mssr",

		.data = &r8a77995_cpg_mssr_info,

	},

#endif

	{ /* sentinel */ }

};