clk: renesas: cpg-mssr: Add r8a774c0 support

Add RZ/G2E (R8A774C0) Clock Pulse Generator / Module Standby and
Software Reset support.

Based on Table 8.2g of "RZ/G Series, 2nd Generation User's Manual:
Hardware (Rev. 0.61, June 12, 2018)".

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

5 files changed, 299 insertions, 0 deletions

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 7a6ceecc213e..8d5a6fbef7e9 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -10,6 +10,7 @@ config CLK_RENESAS
 	select CLK_R8A7745 if ARCH_R8A7745
 	select CLK_R8A77470 if ARCH_R8A77470
 	select CLK_R8A774A1 if ARCH_R8A774A1
+	select CLK_R8A774C0 if ARCH_R8A774C0
 	select CLK_R8A7778 if ARCH_R8A7778
 	select CLK_R8A7779 if ARCH_R8A7779
 	select CLK_R8A7790 if ARCH_R8A7790
@@ -77,6 +78,10 @@ config CLK_R8A774A1
 	bool "RZ/G2M clock support" if COMPILE_TEST
 	select CLK_RCAR_GEN3_CPG
 
+config CLK_R8A774C0
+	bool "RZ/G2E clock support" if COMPILE_TEST
+	select CLK_RCAR_GEN3_CPG
+
 config CLK_R8A7778
 	bool "R-Car M1A clock support" if COMPILE_TEST
 	select CLK_RENESAS_CPG_MSTP
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index dbbfd0b0742b..c793e3cc9452 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_CLK_R8A7743)		+= r8a7743-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A7745)		+= r8a7745-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A77470)		+= r8a77470-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A774A1)		+= r8a774a1-cpg-mssr.o
+obj-$(CONFIG_CLK_R8A774C0)		+= r8a774c0-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A7778)		+= clk-r8a7778.o
 obj-$(CONFIG_CLK_R8A7779)		+= clk-r8a7779.o
 obj-$(CONFIG_CLK_R8A7790)		+= r8a7790-cpg-mssr.o
diff --git a/drivers/clk/renesas/r8a774c0-cpg-mssr.c b/drivers/clk/renesas/r8a774c0-cpg-mssr.c
new file mode 100644
index 000000000000..10b96895d452
--- /dev/null
+++ b/drivers/clk/renesas/r8a774c0-cpg-mssr.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * r8a774c0 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2018 Renesas Electronics Corp.
+ *
+ * Based on r8a77990-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/soc/renesas/rcar-rst.h>
+
+#include <dt-bindings/clock/r8a774c0-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 = R8A774C0_CLK_CPEX,
+
+	/* External Input Clocks */
+	CLK_EXTAL,
+
+	/* Internal Core Clocks */
+	CLK_MAIN,
+	CLK_PLL0,
+	CLK_PLL1,
+	CLK_PLL3,
+	CLK_PLL0D4,
+	CLK_PLL0D8,
+	CLK_PLL0D20,
+	CLK_PLL0D24,
+	CLK_PLL1D2,
+	CLK_PE,
+	CLK_S0,
+	CLK_S1,
+	CLK_S2,
+	CLK_S3,
+	CLK_SDSRC,
+	CLK_RINT,
+	CLK_OCO,
+
+	/* Module Clocks */
+	MOD_CLK_BASE
+};
+
+static const struct cpg_core_clk r8a774c0_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,	   1, 100),
+	DEF_FIXED(".pll0d4",   CLK_PLL0D4,         CLK_PLL0,       4, 1),
+	DEF_FIXED(".pll0d8",   CLK_PLL0D8,         CLK_PLL0,       8, 1),
+	DEF_FIXED(".pll0d20",  CLK_PLL0D20,        CLK_PLL0,      20, 1),
+	DEF_FIXED(".pll0d24",  CLK_PLL0D24,        CLK_PLL0,      24, 1),
+	DEF_FIXED(".pll1d2",   CLK_PLL1D2,         CLK_PLL1,       2, 1),
+	DEF_FIXED(".pe",       CLK_PE,             CLK_PLL0D20,    1, 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),
+
+	DEF_DIV6_RO(".r",      CLK_RINT,           CLK_EXTAL, CPG_RCKCR, 32),
+
+	DEF_RATE(".oco",       CLK_OCO,            8 * 1000 * 1000),
+
+	/* Core Clock Outputs */
+	DEF_FIXED("za2",       R8A774C0_CLK_ZA2,   CLK_PLL0D24,    1, 1),
+	DEF_FIXED("za8",       R8A774C0_CLK_ZA8,   CLK_PLL0D8,     1, 1),
+	DEF_FIXED("ztr",       R8A774C0_CLK_ZTR,   CLK_PLL1,       6, 1),
+	DEF_FIXED("zt",        R8A774C0_CLK_ZT,    CLK_PLL1,       4, 1),
+	DEF_FIXED("zx",        R8A774C0_CLK_ZX,    CLK_PLL1,       3, 1),
+	DEF_FIXED("s0d1",      R8A774C0_CLK_S0D1,  CLK_S0,         1, 1),
+	DEF_FIXED("s0d3",      R8A774C0_CLK_S0D3,  CLK_S0,         3, 1),
+	DEF_FIXED("s0d6",      R8A774C0_CLK_S0D6,  CLK_S0,         6, 1),
+	DEF_FIXED("s0d12",     R8A774C0_CLK_S0D12, CLK_S0,        12, 1),
+	DEF_FIXED("s0d24",     R8A774C0_CLK_S0D24, CLK_S0,        24, 1),
+	DEF_FIXED("s1d1",      R8A774C0_CLK_S1D1,  CLK_S1,         1, 1),
+	DEF_FIXED("s1d2",      R8A774C0_CLK_S1D2,  CLK_S1,         2, 1),
+	DEF_FIXED("s1d4",      R8A774C0_CLK_S1D4,  CLK_S1,         4, 1),
+	DEF_FIXED("s2d1",      R8A774C0_CLK_S2D1,  CLK_S2,         1, 1),
+	DEF_FIXED("s2d2",      R8A774C0_CLK_S2D2,  CLK_S2,         2, 1),
+	DEF_FIXED("s2d4",      R8A774C0_CLK_S2D4,  CLK_S2,         4, 1),
+	DEF_FIXED("s3d1",      R8A774C0_CLK_S3D1,  CLK_S3,         1, 1),
+	DEF_FIXED("s3d2",      R8A774C0_CLK_S3D2,  CLK_S3,         2, 1),
+	DEF_FIXED("s3d4",      R8A774C0_CLK_S3D4,  CLK_S3,         4, 1),
+
+	DEF_GEN3_SD("sd0",     R8A774C0_CLK_SD0,   CLK_SDSRC,	  0x0074),
+	DEF_GEN3_SD("sd1",     R8A774C0_CLK_SD1,   CLK_SDSRC,	  0x0078),
+	DEF_GEN3_SD("sd3",     R8A774C0_CLK_SD3,   CLK_SDSRC,	  0x026c),
+
+	DEF_FIXED("cl",        R8A774C0_CLK_CL,    CLK_PLL1,      48, 1),
+	DEF_FIXED("cp",        R8A774C0_CLK_CP,    CLK_EXTAL,      2, 1),
+	DEF_FIXED("cpex",      R8A774C0_CLK_CPEX,  CLK_EXTAL,      4, 1),
+
+	DEF_DIV6_RO("osc",     R8A774C0_CLK_OSC,   CLK_EXTAL, CPG_RCKCR,  8),
+
+	DEF_GEN3_PE("s0d6c",   R8A774C0_CLK_S0D6C, CLK_S0, 6, CLK_PE, 2),
+	DEF_GEN3_PE("s3d1c",   R8A774C0_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
+	DEF_GEN3_PE("s3d2c",   R8A774C0_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),
+	DEF_GEN3_PE("s3d4c",   R8A774C0_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),
+
+	DEF_DIV6P1("csi0",     R8A774C0_CLK_CSI0,  CLK_PLL1D2, 0x00c),
+	DEF_DIV6P1("mso",      R8A774C0_CLK_MSO,   CLK_PLL1D2, 0x014),
+
+	DEF_GEN3_RCKSEL("r",   R8A774C0_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4),
+};
+
+static const struct mssr_mod_clk r8a774c0_mod_clks[] __initconst = {
+	DEF_MOD("scif5",		 202,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("scif4",		 203,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("scif3",		 204,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("scif1",		 206,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("scif0",		 207,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("msiof3",		 208,	R8A774C0_CLK_MSO),
+	DEF_MOD("msiof2",		 209,	R8A774C0_CLK_MSO),
+	DEF_MOD("msiof1",		 210,	R8A774C0_CLK_MSO),
+	DEF_MOD("msiof0",		 211,	R8A774C0_CLK_MSO),
+	DEF_MOD("sys-dmac2",		 217,	R8A774C0_CLK_S3D1),
+	DEF_MOD("sys-dmac1",		 218,	R8A774C0_CLK_S3D1),
+	DEF_MOD("sys-dmac0",		 219,	R8A774C0_CLK_S3D1),
+
+	DEF_MOD("cmt3",			 300,	R8A774C0_CLK_R),
+	DEF_MOD("cmt2",			 301,	R8A774C0_CLK_R),
+	DEF_MOD("cmt1",			 302,	R8A774C0_CLK_R),
+	DEF_MOD("cmt0",			 303,	R8A774C0_CLK_R),
+	DEF_MOD("scif2",		 310,	R8A774C0_CLK_S3D4C),
+	DEF_MOD("sdif3",		 311,	R8A774C0_CLK_SD3),
+	DEF_MOD("sdif1",		 313,	R8A774C0_CLK_SD1),
+	DEF_MOD("sdif0",		 314,	R8A774C0_CLK_SD0),
+	DEF_MOD("pcie0",		 319,	R8A774C0_CLK_S3D1),
+	DEF_MOD("usb3-if0",		 328,	R8A774C0_CLK_S3D1),
+	DEF_MOD("usb-dmac0",		 330,	R8A774C0_CLK_S3D1),
+	DEF_MOD("usb-dmac1",		 331,	R8A774C0_CLK_S3D1),
+
+	DEF_MOD("rwdt",			 402,	R8A774C0_CLK_R),
+	DEF_MOD("intc-ex",		 407,	R8A774C0_CLK_CP),
+	DEF_MOD("intc-ap",		 408,	R8A774C0_CLK_S0D3),
+
+	DEF_MOD("audmac0",		 502,	R8A774C0_CLK_S3D4),
+	DEF_MOD("hscif4",		 516,	R8A774C0_CLK_S3D1C),
+	DEF_MOD("hscif3",		 517,	R8A774C0_CLK_S3D1C),
+	DEF_MOD("hscif2",		 518,	R8A774C0_CLK_S3D1C),
+	DEF_MOD("hscif1",		 519,	R8A774C0_CLK_S3D1C),
+	DEF_MOD("hscif0",		 520,	R8A774C0_CLK_S3D1C),
+	DEF_MOD("thermal",		 522,	R8A774C0_CLK_CP),
+	DEF_MOD("pwm",			 523,	R8A774C0_CLK_S3D4C),
+
+	DEF_MOD("fcpvd1",		 602,	R8A774C0_CLK_S1D2),
+	DEF_MOD("fcpvd0",		 603,	R8A774C0_CLK_S1D2),
+	DEF_MOD("fcpvb0",		 607,	R8A774C0_CLK_S0D1),
+	DEF_MOD("fcpvi0",		 611,	R8A774C0_CLK_S0D1),
+	DEF_MOD("fcpf0",		 615,	R8A774C0_CLK_S0D1),
+	DEF_MOD("fcpcs",		 619,	R8A774C0_CLK_S0D1),
+	DEF_MOD("vspd1",		 622,	R8A774C0_CLK_S1D2),
+	DEF_MOD("vspd0",		 623,	R8A774C0_CLK_S1D2),
+	DEF_MOD("vspb",			 626,	R8A774C0_CLK_S0D1),
+	DEF_MOD("vspi0",		 631,	R8A774C0_CLK_S0D1),
+
+	DEF_MOD("ehci0",		 703,	R8A774C0_CLK_S3D4),
+	DEF_MOD("hsusb",		 704,	R8A774C0_CLK_S3D4),
+	DEF_MOD("csi40",		 716,	R8A774C0_CLK_CSI0),
+	DEF_MOD("du1",			 723,	R8A774C0_CLK_S2D1),
+	DEF_MOD("du0",			 724,	R8A774C0_CLK_S2D1),
+	DEF_MOD("lvds",			 727,	R8A774C0_CLK_S2D1),
+
+	DEF_MOD("vin5",			 806,	R8A774C0_CLK_S1D2),
+	DEF_MOD("vin4",			 807,	R8A774C0_CLK_S1D2),
+	DEF_MOD("etheravb",		 812,	R8A774C0_CLK_S3D2),
+
+	DEF_MOD("gpio6",		 906,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio5",		 907,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio4",		 908,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio3",		 909,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio2",		 910,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio1",		 911,	R8A774C0_CLK_S3D4),
+	DEF_MOD("gpio0",		 912,	R8A774C0_CLK_S3D4),
+	DEF_MOD("can-if1",		 915,	R8A774C0_CLK_S3D4),
+	DEF_MOD("can-if0",		 916,	R8A774C0_CLK_S3D4),
+	DEF_MOD("i2c6",			 918,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c5",			 919,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c-dvfs",		 926,	R8A774C0_CLK_CP),
+	DEF_MOD("i2c4",			 927,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c3",			 928,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c2",			 929,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c1",			 930,	R8A774C0_CLK_S3D2),
+	DEF_MOD("i2c0",			 931,	R8A774C0_CLK_S3D2),
+
+	DEF_MOD("i2c7",			1003,	R8A774C0_CLK_S3D2),
+	DEF_MOD("ssi-all",		1005,	R8A774C0_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,	R8A774C0_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 r8a774c0_crit_mod_clks[] __initconst = {
+	MOD_CLK_ID(408),	/* INTC-AP (GIC) */
+};
+
+/*
+ * CPG Clock Data
+ */
+
+/*
+ * MD19		EXTAL (MHz)	PLL0		PLL1		PLL3
+ *--------------------------------------------------------------------
+ * 0		48 x 1		x100/1		x100/3		x100/3
+ * 1		48 x 1		x100/1		x100/3		 x58/3
+ */
+#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,	 58,	3,	},
+};
+
+static int __init r8a774c0_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 r8a774c0_cpg_mssr_info __initconst = {
+	/* Core Clocks */
+	.core_clks = r8a774c0_core_clks,
+	.num_core_clks = ARRAY_SIZE(r8a774c0_core_clks),
+	.last_dt_core_clk = LAST_DT_CORE_CLK,
+	.num_total_core_clks = MOD_CLK_BASE,
+
+	/* Module Clocks */
+	.mod_clks = r8a774c0_mod_clks,
+	.num_mod_clks = ARRAY_SIZE(r8a774c0_mod_clks),
+	.num_hw_mod_clks = 12 * 32,
+
+	/* Critical Module Clocks */
+	.crit_mod_clks = r8a774c0_crit_mod_clks,
+	.num_crit_mod_clks = ARRAY_SIZE(r8a774c0_crit_mod_clks),
+
+	/* Callbacks */
+	.init = r8a774c0_cpg_mssr_init,
+	.cpg_clk_register = rcar_gen3_cpg_clk_register,
+};
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
index c4beec7b563f..e0c11a5b1761 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.c
+++ b/drivers/clk/renesas/renesas-cpg-mssr.c
@@ -717,6 +717,12 @@ static const struct of_device_id cpg_mssr_match[] = {
 		.data = &r8a774a1_cpg_mssr_info,
 	},
 #endif
+#ifdef CONFIG_CLK_R8A774C0
+	{
+		.compatible = "renesas,r8a774c0-cpg-mssr",
+		.data = &r8a774c0_cpg_mssr_info,
+	},
+#endif
 #ifdef CONFIG_CLK_R8A7790
 	{
 		.compatible = "renesas,r8a7790-cpg-mssr",
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h
index 35f60b3d0e09..d43d00351638 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.h
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -151,6 +151,7 @@ extern const struct cpg_mssr_info r8a7743_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7745_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a77470_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a774a1_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a774c0_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7790_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7791_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7792_cpg_mssr_info;