drivers/clk/renesas/r8a7796-cpg-mssr.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7796 (R-Car M3-W/W+) Clock Pulse Generator / Module Standby and Software
  * Reset
  *
  * Copyright (C) 2016-2019 Glider bvba
  * Copyright (C) 2018-2019 Renesas Electronics Corp.
  *
  * Based on r8a7795-cpg-mssr.c
  *
  * Copyright (C) 2015 Glider bvba
  * Copyright (C) 2015 Renesas Electronics Corp.
  */

 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
 #include <linux/soc/renesas/rcar-rst.h>

 #include <dt-bindings/clock/r8a7796-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 = R8A7796_CLK_OSC,

 	/* External Input Clocks */
 	CLK_EXTAL,
 	CLK_EXTALR,

 	/* Internal Core Clocks */
 	CLK_MAIN,
 	CLK_PLL0,
 	CLK_PLL1,
 	CLK_PLL2,
 	CLK_PLL3,
 	CLK_PLL4,
 	CLK_PLL1_DIV2,
 	CLK_PLL1_DIV4,
 	CLK_S0,
 	CLK_S1,
 	CLK_S2,
 	CLK_S3,
 	CLK_SDSRC,
 	CLK_SSPSRC,
 	CLK_RINT,

 	/* Module Clocks */
 	MOD_CLK_BASE
 };

 static const struct cpg_core_clk r8a7796_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_GEN3_MAIN, CLK_EXTAL),
 	DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
 	DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
 	DEF_BASE(".pll2",       CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
 	DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
 	DEF_BASE(".pll4",       CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),

 	DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2,     CLK_PLL1,       2, 1),
 	DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4,     CLK_PLL1_DIV2,  2, 1),
 	DEF_FIXED(".s0",        CLK_S0,            CLK_PLL1_DIV2,  2, 1),
 	DEF_FIXED(".s1",        CLK_S1,            CLK_PLL1_DIV2,  3, 1),
 	DEF_FIXED(".s2",        CLK_S2,            CLK_PLL1_DIV2,  4, 1),
 	DEF_FIXED(".s3",        CLK_S3,            CLK_PLL1_DIV2,  6, 1),
 	DEF_FIXED(".sdsrc",     CLK_SDSRC,         CLK_PLL1_DIV2,  2, 1),

 	DEF_GEN3_OSC(".r",      CLK_RINT,          CLK_EXTAL,      32),

 	/* Core Clock Outputs */
 	DEF_GEN3_Z("z",         R8A7796_CLK_Z,     CLK_TYPE_GEN3_Z,  CLK_PLL0, 2, 8),
 	DEF_GEN3_Z("z2",        R8A7796_CLK_Z2,    CLK_TYPE_GEN3_Z,  CLK_PLL2, 2, 0),
 	DEF_FIXED("ztr",        R8A7796_CLK_ZTR,   CLK_PLL1_DIV2,  6, 1),
 	DEF_FIXED("ztrd2",      R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
 	DEF_FIXED("zt",         R8A7796_CLK_ZT,    CLK_PLL1_DIV2,  4, 1),
 	DEF_FIXED("zx",         R8A7796_CLK_ZX,    CLK_PLL1_DIV2,  2, 1),
 	DEF_FIXED("s0d1",       R8A7796_CLK_S0D1,  CLK_S0,         1, 1),
 	DEF_FIXED("s0d2",       R8A7796_CLK_S0D2,  CLK_S0,         2, 1),
 	DEF_FIXED("s0d3",       R8A7796_CLK_S0D3,  CLK_S0,         3, 1),
 	DEF_FIXED("s0d4",       R8A7796_CLK_S0D4,  CLK_S0,         4, 1),
 	DEF_FIXED("s0d6",       R8A7796_CLK_S0D6,  CLK_S0,         6, 1),
 	DEF_FIXED("s0d8",       R8A7796_CLK_S0D8,  CLK_S0,         8, 1),
 	DEF_FIXED("s0d12",      R8A7796_CLK_S0D12, CLK_S0,        12, 1),
 	DEF_FIXED("s1d1",       R8A7796_CLK_S1D1,  CLK_S1,         1, 1),
 	DEF_FIXED("s1d2",       R8A7796_CLK_S1D2,  CLK_S1,         2, 1),
 	DEF_FIXED("s1d4",       R8A7796_CLK_S1D4,  CLK_S1,         4, 1),
 	DEF_FIXED("s2d1",       R8A7796_CLK_S2D1,  CLK_S2,         1, 1),
 	DEF_FIXED("s2d2",       R8A7796_CLK_S2D2,  CLK_S2,         2, 1),
 	DEF_FIXED("s2d4",       R8A7796_CLK_S2D4,  CLK_S2,         4, 1),
 	DEF_FIXED("s3d1",       R8A7796_CLK_S3D1,  CLK_S3,         1, 1),
 	DEF_FIXED("s3d2",       R8A7796_CLK_S3D2,  CLK_S3,         2, 1),
 	DEF_FIXED("s3d4",       R8A7796_CLK_S3D4,  CLK_S3,         4, 1),

 	DEF_GEN3_SD("sd0",      R8A7796_CLK_SD0,   CLK_SDSRC,     0x074),
 	DEF_GEN3_SD("sd1",      R8A7796_CLK_SD1,   CLK_SDSRC,     0x078),
 	DEF_GEN3_SD("sd2",      R8A7796_CLK_SD2,   CLK_SDSRC,     0x268),
 	DEF_GEN3_SD("sd3",      R8A7796_CLK_SD3,   CLK_SDSRC,     0x26c),

 	DEF_FIXED("cl",         R8A7796_CLK_CL,    CLK_PLL1_DIV2, 48, 1),
 	DEF_FIXED("cp",         R8A7796_CLK_CP,    CLK_EXTAL,      2, 1),
 	DEF_FIXED("cpex",       R8A7796_CLK_CPEX,  CLK_EXTAL,      2, 1),

 	DEF_DIV6P1("canfd",     R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
 	DEF_DIV6P1("csi0",      R8A7796_CLK_CSI0,  CLK_PLL1_DIV4, 0x00c),
 	DEF_DIV6P1("mso",       R8A7796_CLK_MSO,   CLK_PLL1_DIV4, 0x014),
 	DEF_DIV6P1("hdmi",      R8A7796_CLK_HDMI,  CLK_PLL1_DIV4, 0x250),

 	DEF_GEN3_OSC("osc",     R8A7796_CLK_OSC,   CLK_EXTAL,     8),

 	DEF_BASE("r",           R8A7796_CLK_R,     CLK_TYPE_GEN3_R, CLK_RINT),
 };

 static struct mssr_mod_clk r8a7796_mod_clks[] __initdata = {
 	DEF_MOD("fdp1-0",		 119,	R8A7796_CLK_S0D1),
 	DEF_MOD("scif5",		 202,	R8A7796_CLK_S3D4),
 	DEF_MOD("scif4",		 203,	R8A7796_CLK_S3D4),
 	DEF_MOD("scif3",		 204,	R8A7796_CLK_S3D4),
 	DEF_MOD("scif1",		 206,	R8A7796_CLK_S3D4),
 	DEF_MOD("scif0",		 207,	R8A7796_CLK_S3D4),
 	DEF_MOD("msiof3",		 208,	R8A7796_CLK_MSO),
 	DEF_MOD("msiof2",		 209,	R8A7796_CLK_MSO),
 	DEF_MOD("msiof1",		 210,	R8A7796_CLK_MSO),
 	DEF_MOD("msiof0",		 211,	R8A7796_CLK_MSO),
 	DEF_MOD("sys-dmac2",		 217,	R8A7796_CLK_S3D1),
 	DEF_MOD("sys-dmac1",		 218,	R8A7796_CLK_S3D1),
 	DEF_MOD("sys-dmac0",		 219,	R8A7796_CLK_S0D3),
 	DEF_MOD("cmt3",			 300,	R8A7796_CLK_R),
 	DEF_MOD("cmt2",			 301,	R8A7796_CLK_R),
 	DEF_MOD("cmt1",			 302,	R8A7796_CLK_R),
 	DEF_MOD("cmt0",			 303,	R8A7796_CLK_R),
 	DEF_MOD("tpu0",			 304,	R8A7796_CLK_S3D4),
 	DEF_MOD("scif2",		 310,	R8A7796_CLK_S3D4),
 	DEF_MOD("sdif3",		 311,	R8A7796_CLK_SD3),
 	DEF_MOD("sdif2",		 312,	R8A7796_CLK_SD2),
 	DEF_MOD("sdif1",		 313,	R8A7796_CLK_SD1),
 	DEF_MOD("sdif0",		 314,	R8A7796_CLK_SD0),
 	DEF_MOD("pcie1",		 318,	R8A7796_CLK_S3D1),
 	DEF_MOD("pcie0",		 319,	R8A7796_CLK_S3D1),
 	DEF_MOD("usb3-if0",		 328,	R8A7796_CLK_S3D1),
 	DEF_MOD("usb-dmac0",		 330,	R8A7796_CLK_S3D1),
 	DEF_MOD("usb-dmac1",		 331,	R8A7796_CLK_S3D1),
 	DEF_MOD("rwdt",			 402,	R8A7796_CLK_R),
 	DEF_MOD("intc-ex",		 407,	R8A7796_CLK_CP),
 	DEF_MOD("intc-ap",		 408,	R8A7796_CLK_S0D3),
 	DEF_MOD("audmac1",		 501,	R8A7796_CLK_S1D2),
 	DEF_MOD("audmac0",		 502,	R8A7796_CLK_S1D2),
 	DEF_MOD("drif31",		 508,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif30",		 509,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif21",		 510,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif20",		 511,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif11",		 512,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif10",		 513,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif01",		 514,	R8A7796_CLK_S3D2),
 	DEF_MOD("drif00",		 515,	R8A7796_CLK_S3D2),
 	DEF_MOD("hscif4",		 516,	R8A7796_CLK_S3D1),
 	DEF_MOD("hscif3",		 517,	R8A7796_CLK_S3D1),
 	DEF_MOD("hscif2",		 518,	R8A7796_CLK_S3D1),
 	DEF_MOD("hscif1",		 519,	R8A7796_CLK_S3D1),
 	DEF_MOD("hscif0",		 520,	R8A7796_CLK_S3D1),
 	DEF_MOD("thermal",		 522,	R8A7796_CLK_CP),
 	DEF_MOD("pwm",			 523,	R8A7796_CLK_S0D12),
 	DEF_MOD("fcpvd2",		 601,	R8A7796_CLK_S0D2),
 	DEF_MOD("fcpvd1",		 602,	R8A7796_CLK_S0D2),
 	DEF_MOD("fcpvd0",		 603,	R8A7796_CLK_S0D2),
 	DEF_MOD("fcpvb0",		 607,	R8A7796_CLK_S0D1),
 	DEF_MOD("fcpvi0",		 611,	R8A7796_CLK_S0D1),
 	DEF_MOD("fcpf0",		 615,	R8A7796_CLK_S0D1),
 	DEF_MOD("fcpci0",		 617,	R8A7796_CLK_S0D2),
 	DEF_MOD("fcpcs",		 619,	R8A7796_CLK_S0D2),
 	DEF_MOD("vspd2",		 621,	R8A7796_CLK_S0D2),
 	DEF_MOD("vspd1",		 622,	R8A7796_CLK_S0D2),
 	DEF_MOD("vspd0",		 623,	R8A7796_CLK_S0D2),
 	DEF_MOD("vspb",			 626,	R8A7796_CLK_S0D1),
 	DEF_MOD("vspi0",		 631,	R8A7796_CLK_S0D1),
 	DEF_MOD("ehci1",		 702,	R8A7796_CLK_S3D2),
 	DEF_MOD("ehci0",		 703,	R8A7796_CLK_S3D2),
 	DEF_MOD("hsusb",		 704,	R8A7796_CLK_S3D2),
 	DEF_MOD("cmm2",			 709,	R8A7796_CLK_S2D1),
 	DEF_MOD("cmm1",			 710,	R8A7796_CLK_S2D1),
 	DEF_MOD("cmm0",			 711,	R8A7796_CLK_S2D1),
 	DEF_MOD("csi20",		 714,	R8A7796_CLK_CSI0),
 	DEF_MOD("csi40",		 716,	R8A7796_CLK_CSI0),
 	DEF_MOD("du2",			 722,	R8A7796_CLK_S2D1),
 	DEF_MOD("du1",			 723,	R8A7796_CLK_S2D1),
 	DEF_MOD("du0",			 724,	R8A7796_CLK_S2D1),
 	DEF_MOD("lvds",			 727,	R8A7796_CLK_S2D1),
 	DEF_MOD("hdmi0",		 729,	R8A7796_CLK_HDMI),
 	DEF_MOD("vin7",			 804,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin6",			 805,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin5",			 806,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin4",			 807,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin3",			 808,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin2",			 809,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin1",			 810,	R8A7796_CLK_S0D2),
 	DEF_MOD("vin0",			 811,	R8A7796_CLK_S0D2),
 	DEF_MOD("etheravb",		 812,	R8A7796_CLK_S0D6),
 	DEF_MOD("imr1",			 822,	R8A7796_CLK_S0D2),
 	DEF_MOD("imr0",			 823,	R8A7796_CLK_S0D2),
 	DEF_MOD("gpio7",		 905,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio6",		 906,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio5",		 907,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio4",		 908,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio3",		 909,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio2",		 910,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio1",		 911,	R8A7796_CLK_S3D4),
 	DEF_MOD("gpio0",		 912,	R8A7796_CLK_S3D4),
 	DEF_MOD("can-fd",		 914,	R8A7796_CLK_S3D2),
 	DEF_MOD("can-if1",		 915,	R8A7796_CLK_S3D4),
 	DEF_MOD("can-if0",		 916,	R8A7796_CLK_S3D4),
 	DEF_MOD("i2c6",			 918,	R8A7796_CLK_S0D6),
 	DEF_MOD("i2c5",			 919,	R8A7796_CLK_S0D6),
 	DEF_MOD("i2c-dvfs",		 926,	R8A7796_CLK_CP),
 	DEF_MOD("i2c4",			 927,	R8A7796_CLK_S0D6),
 	DEF_MOD("i2c3",			 928,	R8A7796_CLK_S0D6),
 	DEF_MOD("i2c2",			 929,	R8A7796_CLK_S3D2),
 	DEF_MOD("i2c1",			 930,	R8A7796_CLK_S3D2),
 	DEF_MOD("i2c0",			 931,	R8A7796_CLK_S3D2),
 	DEF_MOD("ssi-all",		1005,	R8A7796_CLK_S3D4),
 	DEF_MOD("ssi9",			1006,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi8",			1007,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi7",			1008,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi6",			1009,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi5",			1010,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi4",			1011,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi3",			1012,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi2",			1013,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi1",			1014,	MOD_CLK_ID(1005)),
 	DEF_MOD("ssi0",			1015,	MOD_CLK_ID(1005)),
 	DEF_MOD("scu-all",		1017,	R8A7796_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-src9",		1022,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src8",		1023,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src7",		1024,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src6",		1025,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src5",		1026,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src4",		1027,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src3",		1028,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src2",		1029,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src1",		1030,	MOD_CLK_ID(1017)),
 	DEF_MOD("scu-src0",		1031,	MOD_CLK_ID(1017)),
 };

 static const unsigned int r8a7796_crit_mod_clks[] __initconst = {
 	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
 };


 /*
  * CPG Clock Data
  */

 /*
  *   MD		EXTAL		PLL0	PLL1	PLL2	PLL3	PLL4	OSC
  * 14 13 19 17	(MHz)
  *-------------------------------------------------------------------------
  * 0  0  0  0	16.66 x 1	x180	x192	x144	x192	x144	/16
  * 0  0  0  1	16.66 x 1	x180	x192	x144	x128	x144	/16
  * 0  0  1  0	Prohibited setting
  * 0  0  1  1	16.66 x 1	x180	x192	x144	x192	x144	/16
  * 0  1  0  0	20    x 1	x150	x160	x120	x160	x120	/19
  * 0  1  0  1	20    x 1	x150	x160	x120	x106	x120	/19
  * 0  1  1  0	Prohibited setting
  * 0  1  1  1	20    x 1	x150	x160	x120	x160	x120	/19
  * 1  0  0  0	25    x 1	x120	x128	x96	x128	x96	/24
  * 1  0  0  1	25    x 1	x120	x128	x96	x84	x96	/24
  * 1  0  1  0	Prohibited setting
  * 1  0  1  1	25    x 1	x120	x128	x96	x128	x96	/24
  * 1  1  0  0	33.33 / 2	x180	x192	x144	x192	x144	/32
  * 1  1  0  1	33.33 / 2	x180	x192	x144	x128	x144	/32
  * 1  1  1  0	Prohibited setting
  * 1  1  1  1	33.33 / 2	x180	x192	x144	x192	x144	/32
  */
 #define CPG_PLL_CONFIG_INDEX(md)	((((md) & BIT(14)) >> 11) | \
 					 (((md) & BIT(13)) >> 11) | \
 					 (((md) & BIT(19)) >> 18) | \
 					 (((md) & BIT(17)) >> 17))

 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
 	/* EXTAL div	PLL1 mult/div	PLL3 mult/div	OSC prediv */
 	{ 1,		192,	1,	192,	1,	16,	},
 	{ 1,		192,	1,	128,	1,	16,	},
 	{ 0, /* Prohibited setting */				},
 	{ 1,		192,	1,	192,	1,	16,	},
 	{ 1,		160,	1,	160,	1,	19,	},
 	{ 1,		160,	1,	106,	1,	19,	},
 	{ 0, /* Prohibited setting */				},
 	{ 1,		160,	1,	160,	1,	19,	},
 	{ 1,		128,	1,	128,	1,	24,	},
 	{ 1,		128,	1,	84,	1,	24,	},
 	{ 0, /* Prohibited setting */				},
 	{ 1,		128,	1,	128,	1,	24,	},
 	{ 2,		192,	1,	192,	1,	32,	},
 	{ 2,		192,	1,	128,	1,	32,	},
 	{ 0, /* Prohibited setting */				},
 	{ 2,		192,	1,	192,	1,	32,	},
 };

 	/*
 	 * Fixups for R-Car M3-W+
 	 */

 static const unsigned int r8a77961_mod_nullify[] __initconst = {
 	MOD_CLK_ID(617),			/* FCPCI0  */
 };

 static int __init r8a7796_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)];
 	if (!cpg_pll_config->extal_div) {
 		dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
 		return -EINVAL;
 	}

 	if (of_device_is_compatible(dev->of_node, "renesas,r8a77961-cpg-mssr"))
 		mssr_mod_nullify(r8a7796_mod_clks,
 				 ARRAY_SIZE(r8a7796_mod_clks),
 				 r8a77961_mod_nullify,
 				 ARRAY_SIZE(r8a77961_mod_nullify));

 	return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
 }

 const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = {
 	/* Core Clocks */
 	.core_clks = r8a7796_core_clks,
 	.num_core_clks = ARRAY_SIZE(r8a7796_core_clks),
 	.last_dt_core_clk = LAST_DT_CORE_CLK,
 	.num_total_core_clks = MOD_CLK_BASE,

 	/* Module Clocks */
 	.mod_clks = r8a7796_mod_clks,
 	.num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks),
 	.num_hw_mod_clks = 12 * 32,

 	/* Critical Module Clocks */
 	.crit_mod_clks = r8a7796_crit_mod_clks,
 	.num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks),

 	/* Callbacks */
 	.init = r8a7796_cpg_mssr_init,
 	.cpg_clk_register = rcar_gen3_cpg_clk_register,
 };
	// SPDX-License-Identifier: GPL-2.0
	/*
	* r8a7796 (R-Car M3-W/W+) Clock Pulse Generator / Module Standby and Software
	* Reset
	*
	* Copyright (C) 2016-2019 Glider bvba
	* Copyright (C) 2018-2019 Renesas Electronics Corp.
	*
	* Based on r8a7795-cpg-mssr.c
	*
	* Copyright (C) 2015 Glider bvba
	* Copyright (C) 2015 Renesas Electronics Corp.
	*/

	#include <linux/device.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/of.h>
	#include <linux/soc/renesas/rcar-rst.h>

	#include <dt-bindings/clock/r8a7796-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 = R8A7796_CLK_OSC,

	/* External Input Clocks */
	CLK_EXTAL,
	CLK_EXTALR,

	/* Internal Core Clocks */
	CLK_MAIN,
	CLK_PLL0,
	CLK_PLL1,
	CLK_PLL2,
	CLK_PLL3,
	CLK_PLL4,
	CLK_PLL1_DIV2,
	CLK_PLL1_DIV4,
	CLK_S0,
	CLK_S1,
	CLK_S2,
	CLK_S3,
	CLK_SDSRC,
	CLK_SSPSRC,
	CLK_RINT,

	/* Module Clocks */
	MOD_CLK_BASE
	};

	static const struct cpg_core_clk r8a7796_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_GEN3_MAIN, CLK_EXTAL),
	DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
	DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
	DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
	DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
	DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),

	DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
	DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
	DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
	DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1),
	DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1),
	DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1),
	DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1),

	DEF_GEN3_OSC(".r", CLK_RINT, CLK_EXTAL, 32),

	/* Core Clock Outputs */
	DEF_GEN3_Z("z", R8A7796_CLK_Z, CLK_TYPE_GEN3_Z, CLK_PLL0, 2, 8),
	DEF_GEN3_Z("z2", R8A7796_CLK_Z2, CLK_TYPE_GEN3_Z, CLK_PLL2, 2, 0),
	DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
	DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
	DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
	DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
	DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1),
	DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1),
	DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1),
	DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1),
	DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1),
	DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1),
	DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1),
	DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1),
	DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1),
	DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1),
	DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1),
	DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1),
	DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1),
	DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1),
	DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1),
	DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1),

	DEF_GEN3_SD("sd0", R8A7796_CLK_SD0, CLK_SDSRC, 0x074),
	DEF_GEN3_SD("sd1", R8A7796_CLK_SD1, CLK_SDSRC, 0x078),
	DEF_GEN3_SD("sd2", R8A7796_CLK_SD2, CLK_SDSRC, 0x268),
	DEF_GEN3_SD("sd3", R8A7796_CLK_SD3, CLK_SDSRC, 0x26c),

	DEF_FIXED("cl", R8A7796_CLK_CL, CLK_PLL1_DIV2, 48, 1),
	DEF_FIXED("cp", R8A7796_CLK_CP, CLK_EXTAL, 2, 1),
	DEF_FIXED("cpex", R8A7796_CLK_CPEX, CLK_EXTAL, 2, 1),

	DEF_DIV6P1("canfd", R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
	DEF_DIV6P1("csi0", R8A7796_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
	DEF_DIV6P1("mso", R8A7796_CLK_MSO, CLK_PLL1_DIV4, 0x014),
	DEF_DIV6P1("hdmi", R8A7796_CLK_HDMI, CLK_PLL1_DIV4, 0x250),

	DEF_GEN3_OSC("osc", R8A7796_CLK_OSC, CLK_EXTAL, 8),

	DEF_BASE("r", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT),
	};

	static struct mssr_mod_clk r8a7796_mod_clks[] __initdata = {
	DEF_MOD("fdp1-0", 119, R8A7796_CLK_S0D1),
	DEF_MOD("scif5", 202, R8A7796_CLK_S3D4),
	DEF_MOD("scif4", 203, R8A7796_CLK_S3D4),
	DEF_MOD("scif3", 204, R8A7796_CLK_S3D4),
	DEF_MOD("scif1", 206, R8A7796_CLK_S3D4),
	DEF_MOD("scif0", 207, R8A7796_CLK_S3D4),
	DEF_MOD("msiof3", 208, R8A7796_CLK_MSO),
	DEF_MOD("msiof2", 209, R8A7796_CLK_MSO),
	DEF_MOD("msiof1", 210, R8A7796_CLK_MSO),
	DEF_MOD("msiof0", 211, R8A7796_CLK_MSO),
	DEF_MOD("sys-dmac2", 217, R8A7796_CLK_S3D1),
	DEF_MOD("sys-dmac1", 218, R8A7796_CLK_S3D1),
	DEF_MOD("sys-dmac0", 219, R8A7796_CLK_S0D3),
	DEF_MOD("cmt3", 300, R8A7796_CLK_R),
	DEF_MOD("cmt2", 301, R8A7796_CLK_R),
	DEF_MOD("cmt1", 302, R8A7796_CLK_R),
	DEF_MOD("cmt0", 303, R8A7796_CLK_R),
	DEF_MOD("tpu0", 304, R8A7796_CLK_S3D4),
	DEF_MOD("scif2", 310, R8A7796_CLK_S3D4),
	DEF_MOD("sdif3", 311, R8A7796_CLK_SD3),
	DEF_MOD("sdif2", 312, R8A7796_CLK_SD2),
	DEF_MOD("sdif1", 313, R8A7796_CLK_SD1),
	DEF_MOD("sdif0", 314, R8A7796_CLK_SD0),
	DEF_MOD("pcie1", 318, R8A7796_CLK_S3D1),
	DEF_MOD("pcie0", 319, R8A7796_CLK_S3D1),
	DEF_MOD("usb3-if0", 328, R8A7796_CLK_S3D1),
	DEF_MOD("usb-dmac0", 330, R8A7796_CLK_S3D1),
	DEF_MOD("usb-dmac1", 331, R8A7796_CLK_S3D1),
	DEF_MOD("rwdt", 402, R8A7796_CLK_R),
	DEF_MOD("intc-ex", 407, R8A7796_CLK_CP),
	DEF_MOD("intc-ap", 408, R8A7796_CLK_S0D3),
	DEF_MOD("audmac1", 501, R8A7796_CLK_S1D2),
	DEF_MOD("audmac0", 502, R8A7796_CLK_S1D2),
	DEF_MOD("drif31", 508, R8A7796_CLK_S3D2),
	DEF_MOD("drif30", 509, R8A7796_CLK_S3D2),
	DEF_MOD("drif21", 510, R8A7796_CLK_S3D2),
	DEF_MOD("drif20", 511, R8A7796_CLK_S3D2),
	DEF_MOD("drif11", 512, R8A7796_CLK_S3D2),
	DEF_MOD("drif10", 513, R8A7796_CLK_S3D2),
	DEF_MOD("drif01", 514, R8A7796_CLK_S3D2),
	DEF_MOD("drif00", 515, R8A7796_CLK_S3D2),
	DEF_MOD("hscif4", 516, R8A7796_CLK_S3D1),
	DEF_MOD("hscif3", 517, R8A7796_CLK_S3D1),
	DEF_MOD("hscif2", 518, R8A7796_CLK_S3D1),
	DEF_MOD("hscif1", 519, R8A7796_CLK_S3D1),
	DEF_MOD("hscif0", 520, R8A7796_CLK_S3D1),
	DEF_MOD("thermal", 522, R8A7796_CLK_CP),
	DEF_MOD("pwm", 523, R8A7796_CLK_S0D12),
	DEF_MOD("fcpvd2", 601, R8A7796_CLK_S0D2),
	DEF_MOD("fcpvd1", 602, R8A7796_CLK_S0D2),
	DEF_MOD("fcpvd0", 603, R8A7796_CLK_S0D2),
	DEF_MOD("fcpvb0", 607, R8A7796_CLK_S0D1),
	DEF_MOD("fcpvi0", 611, R8A7796_CLK_S0D1),
	DEF_MOD("fcpf0", 615, R8A7796_CLK_S0D1),
	DEF_MOD("fcpci0", 617, R8A7796_CLK_S0D2),
	DEF_MOD("fcpcs", 619, R8A7796_CLK_S0D2),
	DEF_MOD("vspd2", 621, R8A7796_CLK_S0D2),
	DEF_MOD("vspd1", 622, R8A7796_CLK_S0D2),
	DEF_MOD("vspd0", 623, R8A7796_CLK_S0D2),
	DEF_MOD("vspb", 626, R8A7796_CLK_S0D1),
	DEF_MOD("vspi0", 631, R8A7796_CLK_S0D1),
	DEF_MOD("ehci1", 702, R8A7796_CLK_S3D2),
	DEF_MOD("ehci0", 703, R8A7796_CLK_S3D2),
	DEF_MOD("hsusb", 704, R8A7796_CLK_S3D2),
	DEF_MOD("cmm2", 709, R8A7796_CLK_S2D1),
	DEF_MOD("cmm1", 710, R8A7796_CLK_S2D1),
	DEF_MOD("cmm0", 711, R8A7796_CLK_S2D1),
	DEF_MOD("csi20", 714, R8A7796_CLK_CSI0),
	DEF_MOD("csi40", 716, R8A7796_CLK_CSI0),
	DEF_MOD("du2", 722, R8A7796_CLK_S2D1),
	DEF_MOD("du1", 723, R8A7796_CLK_S2D1),
	DEF_MOD("du0", 724, R8A7796_CLK_S2D1),
	DEF_MOD("lvds", 727, R8A7796_CLK_S2D1),
	DEF_MOD("hdmi0", 729, R8A7796_CLK_HDMI),
	DEF_MOD("vin7", 804, R8A7796_CLK_S0D2),
	DEF_MOD("vin6", 805, R8A7796_CLK_S0D2),
	DEF_MOD("vin5", 806, R8A7796_CLK_S0D2),
	DEF_MOD("vin4", 807, R8A7796_CLK_S0D2),
	DEF_MOD("vin3", 808, R8A7796_CLK_S0D2),
	DEF_MOD("vin2", 809, R8A7796_CLK_S0D2),
	DEF_MOD("vin1", 810, R8A7796_CLK_S0D2),
	DEF_MOD("vin0", 811, R8A7796_CLK_S0D2),
	DEF_MOD("etheravb", 812, R8A7796_CLK_S0D6),
	DEF_MOD("imr1", 822, R8A7796_CLK_S0D2),
	DEF_MOD("imr0", 823, R8A7796_CLK_S0D2),
	DEF_MOD("gpio7", 905, R8A7796_CLK_S3D4),
	DEF_MOD("gpio6", 906, R8A7796_CLK_S3D4),
	DEF_MOD("gpio5", 907, R8A7796_CLK_S3D4),
	DEF_MOD("gpio4", 908, R8A7796_CLK_S3D4),
	DEF_MOD("gpio3", 909, R8A7796_CLK_S3D4),
	DEF_MOD("gpio2", 910, R8A7796_CLK_S3D4),
	DEF_MOD("gpio1", 911, R8A7796_CLK_S3D4),
	DEF_MOD("gpio0", 912, R8A7796_CLK_S3D4),
	DEF_MOD("can-fd", 914, R8A7796_CLK_S3D2),
	DEF_MOD("can-if1", 915, R8A7796_CLK_S3D4),
	DEF_MOD("can-if0", 916, R8A7796_CLK_S3D4),
	DEF_MOD("i2c6", 918, R8A7796_CLK_S0D6),
	DEF_MOD("i2c5", 919, R8A7796_CLK_S0D6),
	DEF_MOD("i2c-dvfs", 926, R8A7796_CLK_CP),
	DEF_MOD("i2c4", 927, R8A7796_CLK_S0D6),
	DEF_MOD("i2c3", 928, R8A7796_CLK_S0D6),
	DEF_MOD("i2c2", 929, R8A7796_CLK_S3D2),
	DEF_MOD("i2c1", 930, R8A7796_CLK_S3D2),
	DEF_MOD("i2c0", 931, R8A7796_CLK_S3D2),
	DEF_MOD("ssi-all", 1005, R8A7796_CLK_S3D4),
	DEF_MOD("ssi9", 1006, MOD_CLK_ID(1005)),
	DEF_MOD("ssi8", 1007, MOD_CLK_ID(1005)),
	DEF_MOD("ssi7", 1008, MOD_CLK_ID(1005)),
	DEF_MOD("ssi6", 1009, MOD_CLK_ID(1005)),
	DEF_MOD("ssi5", 1010, MOD_CLK_ID(1005)),
	DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)),
	DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)),
	DEF_MOD("ssi2", 1013, MOD_CLK_ID(1005)),
	DEF_MOD("ssi1", 1014, MOD_CLK_ID(1005)),
	DEF_MOD("ssi0", 1015, MOD_CLK_ID(1005)),
	DEF_MOD("scu-all", 1017, R8A7796_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-src9", 1022, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src8", 1023, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src7", 1024, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src4", 1027, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src3", 1028, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src2", 1029, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src1", 1030, MOD_CLK_ID(1017)),
	DEF_MOD("scu-src0", 1031, MOD_CLK_ID(1017)),
	};

	static const unsigned int r8a7796_crit_mod_clks[] __initconst = {
	MOD_CLK_ID(408), /* INTC-AP (GIC) */
	};


	/*
	* CPG Clock Data
	*/

	/*
	* MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 OSC
	* 14 13 19 17 (MHz)
	*-------------------------------------------------------------------------
	* 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 /16
	* 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 /16
	* 0 0 1 0 Prohibited setting
	* 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 /16
	* 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 /19
	* 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 /19
	* 0 1 1 0 Prohibited setting
	* 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 /19
	* 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 /24
	* 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 /24
	* 1 0 1 0 Prohibited setting
	* 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 /24
	* 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 /32
	* 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 /32
	* 1 1 1 0 Prohibited setting
	* 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 /32
	*/
	#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) \| \
	(((md) & BIT(13)) >> 11) \| \
	(((md) & BIT(19)) >> 18) \| \
	(((md) & BIT(17)) >> 17))

	static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
	/* EXTAL div PLL1 mult/div PLL3 mult/div OSC prediv */
	{ 1, 192, 1, 192, 1, 16, },
	{ 1, 192, 1, 128, 1, 16, },
	{ 0, /* Prohibited setting */ },
	{ 1, 192, 1, 192, 1, 16, },
	{ 1, 160, 1, 160, 1, 19, },
	{ 1, 160, 1, 106, 1, 19, },
	{ 0, /* Prohibited setting */ },
	{ 1, 160, 1, 160, 1, 19, },
	{ 1, 128, 1, 128, 1, 24, },
	{ 1, 128, 1, 84, 1, 24, },
	{ 0, /* Prohibited setting */ },
	{ 1, 128, 1, 128, 1, 24, },
	{ 2, 192, 1, 192, 1, 32, },
	{ 2, 192, 1, 128, 1, 32, },
	{ 0, /* Prohibited setting */ },
	{ 2, 192, 1, 192, 1, 32, },
	};

	/*
	* Fixups for R-Car M3-W+
	*/

	static const unsigned int r8a77961_mod_nullify[] __initconst = {
	MOD_CLK_ID(617), /* FCPCI0 */
	};

	static int __init r8a7796_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)];
	if (!cpg_pll_config->extal_div) {
	dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
	return -EINVAL;
	}

	if (of_device_is_compatible(dev->of_node, "renesas,r8a77961-cpg-mssr"))
	mssr_mod_nullify(r8a7796_mod_clks,
	ARRAY_SIZE(r8a7796_mod_clks),
	r8a77961_mod_nullify,
	ARRAY_SIZE(r8a77961_mod_nullify));

	return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
	}

	const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = {
	/* Core Clocks */
	.core_clks = r8a7796_core_clks,
	.num_core_clks = ARRAY_SIZE(r8a7796_core_clks),
	.last_dt_core_clk = LAST_DT_CORE_CLK,
	.num_total_core_clks = MOD_CLK_BASE,

	/* Module Clocks */
	.mod_clks = r8a7796_mod_clks,
	.num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks),
	.num_hw_mod_clks = 12 * 32,

	/* Critical Module Clocks */
	.crit_mod_clks = r8a7796_crit_mod_clks,
	.num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks),

	/* Callbacks */
	.init = r8a7796_cpg_mssr_init,
	.cpg_clk_register = rcar_gen3_cpg_clk_register,
	};