From 36c2ee4ce5192f0dd49b9616ba246bdad90e2546 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 21 Jul 2017 23:18:03 +0200 Subject: [PATCH] clk: rmobile: Add RCar Gen3 clock driver Add clock driver for the RCar Gen3 R8A7795 and R8A7796 SoCs . This driver allows reading out the clock configuration set by previous boot stages and enabling and disabling clock using the MSTP registers. Setting clock is not supported thus far. Signed-off-by: Marek Vasut Cc: Nobuhiro Iwamatsu Signed-off-by: Nobuhiro Iwamatsu --- drivers/clk/Kconfig | 1 + drivers/clk/Makefile | 1 + drivers/clk/renesas/Kconfig | 13 + drivers/clk/renesas/Makefile | 1 + drivers/clk/renesas/clk-rcar-gen3.c | 951 ++++++++++++++++++++++++++++ 5 files changed, 967 insertions(+) create mode 100644 drivers/clk/renesas/Kconfig create mode 100644 drivers/clk/renesas/Makefile create mode 100644 drivers/clk/renesas/clk-rcar-gen3.c diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index 44da716b26..60bd706fa2 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -55,5 +55,6 @@ source "drivers/clk/tegra/Kconfig" source "drivers/clk/uniphier/Kconfig" source "drivers/clk/exynos/Kconfig" source "drivers/clk/at91/Kconfig" +source "drivers/clk/renesas/Kconfig" endmenu diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index 2746a8016a..159f285f9a 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/ obj-$(CONFIG_SANDBOX) += clk_sandbox.o obj-$(CONFIG_SANDBOX) += clk_sandbox_test.o obj-$(CONFIG_MACH_PIC32) += clk_pic32.o +obj-$(CONFIG_CLK_RENESAS) += renesas/ obj-$(CONFIG_CLK_ZYNQ) += clk_zynq.o obj-$(CONFIG_CLK_ZYNQMP) += clk_zynqmp.o diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig new file mode 100644 index 0000000000..07640d1ccf --- /dev/null +++ b/drivers/clk/renesas/Kconfig @@ -0,0 +1,13 @@ +config CLK_RENESAS + bool "Renesas clock drivers" + depends on CLK && ARCH_RMOBILE + help + Enable support for clock present on Renesas RCar SoCs. + +config CLK_RCAR_GEN3 + bool "Renesas RCar Gen3 R8A7795/R8A7796 clock driver" + def_bool y if RCAR_GEN3 + depends on CLK_RENESAS + help + Enable this to support the clocks on Renesas RCar Gen3 + R8A7795 and R8A7796 SoC. diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile new file mode 100644 index 0000000000..bd635052be --- /dev/null +++ b/drivers/clk/renesas/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_CLK_RCAR_GEN3) += clk-rcar-gen3.o diff --git a/drivers/clk/renesas/clk-rcar-gen3.c b/drivers/clk/renesas/clk-rcar-gen3.c new file mode 100644 index 0000000000..5ea7d9a1f5 --- /dev/null +++ b/drivers/clk/renesas/clk-rcar-gen3.c @@ -0,0 +1,951 @@ +/* + * Renesas RCar Gen3 R8A7795/R8A7796 CPG MSSR driver + * + * Copyright (C) 2017 Marek Vasut + * + * Based on the following driver from Linux kernel: + * r8a7796 Clock Pulse Generator / Module Standby and Software Reset + * + * Copyright (C) 2016 Glider bvba + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#define CPG_RST_MODEMR 0x0060 + +#define CPG_PLL0CR 0x00d8 +#define CPG_PLL2CR 0x002c +#define CPG_PLL4CR 0x01f4 + +/* + * Module Standby and Software Reset register offets. + * + * If the registers exist, these are valid for SH-Mobile, R-Mobile, + * R-Car Gen2, R-Car Gen3, and RZ/G1. + * These are NOT valid for R-Car Gen1 and RZ/A1! + */ + +/* + * Module Stop Status Register offsets + */ + +static const u16 mstpsr[] = { + 0x030, 0x038, 0x040, 0x048, 0x04C, 0x03C, 0x1C0, 0x1C4, + 0x9A0, 0x9A4, 0x9A8, 0x9AC, +}; + +#define MSTPSR(i) mstpsr[i] + + +/* + * System Module Stop Control Register offsets + */ + +static const u16 smstpcr[] = { + 0x130, 0x134, 0x138, 0x13C, 0x140, 0x144, 0x148, 0x14C, + 0x990, 0x994, 0x998, 0x99C, +}; + +#define SMSTPCR(i) smstpcr[i] + + +/* Realtime Module Stop Control Register offsets */ +#define RMSTPCR(i) (smstpcr[i] - 0x20) + +/* Modem Module Stop Control Register offsets (r8a73a4) */ +#define MMSTPCR(i) (smstpcr[i] + 0x20) + +/* Software Reset Clearing Register offsets */ +#define SRSTCLR(i) (0x940 + (i) * 4) + +struct gen3_clk_priv { + void __iomem *base; + struct clk clk_extal; + struct clk clk_extalr; + const struct rcar_gen3_cpg_pll_config *cpg_pll_config; + const struct mssr_mod_clk *mod_clk; + u32 mod_clk_size; +}; + +/* + * Definitions of CPG Core Clocks + * + * These include: + * - Clock outputs exported to DT + * - External input clocks + * - Internal CPG clocks + */ +struct cpg_core_clk { + /* Common */ + const char *name; + unsigned int id; + unsigned int type; + /* Depending on type */ + unsigned int parent; /* Core Clocks only */ + unsigned int div; + unsigned int mult; + unsigned int offset; +}; + +enum clk_types { + /* Generic */ + CLK_TYPE_IN, /* External Clock Input */ + CLK_TYPE_FF, /* Fixed Factor Clock */ + + /* Custom definitions start here */ + CLK_TYPE_CUSTOM, +}; + +#define DEF_TYPE(_name, _id, _type...) \ + { .name = _name, .id = _id, .type = _type } +#define DEF_BASE(_name, _id, _type, _parent...) \ + DEF_TYPE(_name, _id, _type, .parent = _parent) + +#define DEF_INPUT(_name, _id) \ + DEF_TYPE(_name, _id, CLK_TYPE_IN) +#define DEF_FIXED(_name, _id, _parent, _div, _mult) \ + DEF_BASE(_name, _id, CLK_TYPE_FF, _parent, .div = _div, .mult = _mult) +#define DEF_GEN3_SD(_name, _id, _parent, _offset) \ + DEF_BASE(_name, _id, CLK_TYPE_GEN3_SD, _parent, .offset = _offset) + +/* + * Definitions of Module Clocks + */ +struct mssr_mod_clk { + const char *name; + unsigned int id; + unsigned int parent; /* Add MOD_CLK_BASE for Module Clocks */ +}; + +/* Convert from sparse base-100 to packed index space */ +#define MOD_CLK_PACK(x) ((x) - ((x) / 100) * (100 - 32)) + +#define MOD_CLK_ID(x) (MOD_CLK_BASE + MOD_CLK_PACK(x)) + +#define DEF_MOD(_name, _mod, _parent...) \ + { .name = _name, .id = MOD_CLK_ID(_mod), .parent = _parent } + +enum rcar_gen3_clk_types { + CLK_TYPE_GEN3_MAIN = CLK_TYPE_CUSTOM, + CLK_TYPE_GEN3_PLL0, + CLK_TYPE_GEN3_PLL1, + CLK_TYPE_GEN3_PLL2, + CLK_TYPE_GEN3_PLL3, + CLK_TYPE_GEN3_PLL4, + CLK_TYPE_GEN3_SD, + CLK_TYPE_GEN3_R, +}; + +struct rcar_gen3_cpg_pll_config { + unsigned int extal_div; + unsigned int pll1_mult; + unsigned int pll3_mult; +}; + +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 gen3_core_clks[] = { + /* 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), + + /* Core Clock Outputs */ + 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), + + /* NOTE: HDMI, CSI, CAN etc. clock are missing */ + + DEF_BASE("r", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT), +}; + +static const struct mssr_mod_clk r8a7795_mod_clks[] = { + DEF_MOD("fdp1-2", 117, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fdp1-1", 118, R8A7795_CLK_S0D1), + DEF_MOD("fdp1-0", 119, R8A7795_CLK_S0D1), + DEF_MOD("scif5", 202, R8A7795_CLK_S3D4), + DEF_MOD("scif4", 203, R8A7795_CLK_S3D4), + DEF_MOD("scif3", 204, R8A7795_CLK_S3D4), + DEF_MOD("scif1", 206, R8A7795_CLK_S3D4), + DEF_MOD("scif0", 207, R8A7795_CLK_S3D4), + DEF_MOD("msiof3", 208, R8A7795_CLK_MSO), + DEF_MOD("msiof2", 209, R8A7795_CLK_MSO), + DEF_MOD("msiof1", 210, R8A7795_CLK_MSO), + DEF_MOD("msiof0", 211, R8A7795_CLK_MSO), + DEF_MOD("sys-dmac2", 217, R8A7795_CLK_S0D3), + DEF_MOD("sys-dmac1", 218, R8A7795_CLK_S0D3), + DEF_MOD("sys-dmac0", 219, R8A7795_CLK_S0D3), + DEF_MOD("cmt3", 300, R8A7795_CLK_R), + DEF_MOD("cmt2", 301, R8A7795_CLK_R), + DEF_MOD("cmt1", 302, R8A7795_CLK_R), + DEF_MOD("cmt0", 303, R8A7795_CLK_R), + DEF_MOD("scif2", 310, R8A7795_CLK_S3D4), + DEF_MOD("sdif3", 311, R8A7795_CLK_SD3), + DEF_MOD("sdif2", 312, R8A7795_CLK_SD2), + DEF_MOD("sdif1", 313, R8A7795_CLK_SD1), + DEF_MOD("sdif0", 314, R8A7795_CLK_SD0), + DEF_MOD("pcie1", 318, R8A7795_CLK_S3D1), + DEF_MOD("pcie0", 319, R8A7795_CLK_S3D1), + DEF_MOD("usb-dmac30", 326, R8A7795_CLK_S3D1), + DEF_MOD("usb3-if1", 327, R8A7795_CLK_S3D1), /* ES1.x */ + DEF_MOD("usb3-if0", 328, R8A7795_CLK_S3D1), + DEF_MOD("usb-dmac31", 329, R8A7795_CLK_S3D1), + DEF_MOD("usb-dmac0", 330, R8A7795_CLK_S3D1), + DEF_MOD("usb-dmac1", 331, R8A7795_CLK_S3D1), + DEF_MOD("rwdt", 402, R8A7795_CLK_R), + DEF_MOD("intc-ex", 407, R8A7795_CLK_CP), + DEF_MOD("intc-ap", 408, R8A7795_CLK_S3D1), + DEF_MOD("audmac1", 501, R8A7795_CLK_S0D3), + DEF_MOD("audmac0", 502, R8A7795_CLK_S0D3), + DEF_MOD("drif7", 508, R8A7795_CLK_S3D2), + DEF_MOD("drif6", 509, R8A7795_CLK_S3D2), + DEF_MOD("drif5", 510, R8A7795_CLK_S3D2), + DEF_MOD("drif4", 511, R8A7795_CLK_S3D2), + DEF_MOD("drif3", 512, R8A7795_CLK_S3D2), + DEF_MOD("drif2", 513, R8A7795_CLK_S3D2), + DEF_MOD("drif1", 514, R8A7795_CLK_S3D2), + DEF_MOD("drif0", 515, R8A7795_CLK_S3D2), + DEF_MOD("hscif4", 516, R8A7795_CLK_S3D1), + DEF_MOD("hscif3", 517, R8A7795_CLK_S3D1), + DEF_MOD("hscif2", 518, R8A7795_CLK_S3D1), + DEF_MOD("hscif1", 519, R8A7795_CLK_S3D1), + DEF_MOD("hscif0", 520, R8A7795_CLK_S3D1), + DEF_MOD("thermal", 522, R8A7795_CLK_CP), + DEF_MOD("pwm", 523, R8A7795_CLK_S0D12), + DEF_MOD("fcpvd3", 600, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fcpvd2", 601, R8A7795_CLK_S0D2), + DEF_MOD("fcpvd1", 602, R8A7795_CLK_S0D2), + DEF_MOD("fcpvd0", 603, R8A7795_CLK_S0D2), + DEF_MOD("fcpvb1", 606, R8A7795_CLK_S0D1), + DEF_MOD("fcpvb0", 607, R8A7795_CLK_S0D1), + DEF_MOD("fcpvi2", 609, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fcpvi1", 610, R8A7795_CLK_S0D1), + DEF_MOD("fcpvi0", 611, R8A7795_CLK_S0D1), + DEF_MOD("fcpf2", 613, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fcpf1", 614, R8A7795_CLK_S0D1), + DEF_MOD("fcpf0", 615, R8A7795_CLK_S0D1), + DEF_MOD("fcpci1", 616, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fcpci0", 617, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("fcpcs", 619, R8A7795_CLK_S0D1), + DEF_MOD("vspd3", 620, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("vspd2", 621, R8A7795_CLK_S0D2), + DEF_MOD("vspd1", 622, R8A7795_CLK_S0D2), + DEF_MOD("vspd0", 623, R8A7795_CLK_S0D2), + DEF_MOD("vspbc", 624, R8A7795_CLK_S0D1), + DEF_MOD("vspbd", 626, R8A7795_CLK_S0D1), + DEF_MOD("vspi2", 629, R8A7795_CLK_S2D1), /* ES1.x */ + DEF_MOD("vspi1", 630, R8A7795_CLK_S0D1), + DEF_MOD("vspi0", 631, R8A7795_CLK_S0D1), + DEF_MOD("ehci3", 700, R8A7795_CLK_S3D4), + DEF_MOD("ehci2", 701, R8A7795_CLK_S3D4), + DEF_MOD("ehci1", 702, R8A7795_CLK_S3D4), + DEF_MOD("ehci0", 703, R8A7795_CLK_S3D4), + DEF_MOD("hsusb", 704, R8A7795_CLK_S3D4), + DEF_MOD("hsusb3", 705, R8A7795_CLK_S3D4), + DEF_MOD("csi21", 713, R8A7795_CLK_CSI0), /* ES1.x */ + DEF_MOD("csi20", 714, R8A7795_CLK_CSI0), + DEF_MOD("csi41", 715, R8A7795_CLK_CSI0), + DEF_MOD("csi40", 716, R8A7795_CLK_CSI0), + DEF_MOD("du3", 721, R8A7795_CLK_S2D1), + DEF_MOD("du2", 722, R8A7795_CLK_S2D1), + DEF_MOD("du1", 723, R8A7795_CLK_S2D1), + DEF_MOD("du0", 724, R8A7795_CLK_S2D1), + DEF_MOD("lvds", 727, R8A7795_CLK_S0D4), + DEF_MOD("hdmi1", 728, R8A7795_CLK_HDMI), + DEF_MOD("hdmi0", 729, R8A7795_CLK_HDMI), + DEF_MOD("vin7", 804, R8A7795_CLK_S0D2), + DEF_MOD("vin6", 805, R8A7795_CLK_S0D2), + DEF_MOD("vin5", 806, R8A7795_CLK_S0D2), + DEF_MOD("vin4", 807, R8A7795_CLK_S0D2), + DEF_MOD("vin3", 808, R8A7795_CLK_S0D2), + DEF_MOD("vin2", 809, R8A7795_CLK_S0D2), + DEF_MOD("vin1", 810, R8A7795_CLK_S0D2), + DEF_MOD("vin0", 811, R8A7795_CLK_S0D2), + DEF_MOD("etheravb", 812, R8A7795_CLK_S0D6), + DEF_MOD("sata0", 815, R8A7795_CLK_S3D2), + DEF_MOD("imr3", 820, R8A7795_CLK_S0D2), + DEF_MOD("imr2", 821, R8A7795_CLK_S0D2), + DEF_MOD("imr1", 822, R8A7795_CLK_S0D2), + DEF_MOD("imr0", 823, R8A7795_CLK_S0D2), + DEF_MOD("gpio7", 905, R8A7795_CLK_S3D4), + DEF_MOD("gpio6", 906, R8A7795_CLK_S3D4), + DEF_MOD("gpio5", 907, R8A7795_CLK_S3D4), + DEF_MOD("gpio4", 908, R8A7795_CLK_S3D4), + DEF_MOD("gpio3", 909, R8A7795_CLK_S3D4), + DEF_MOD("gpio2", 910, R8A7795_CLK_S3D4), + DEF_MOD("gpio1", 911, R8A7795_CLK_S3D4), + DEF_MOD("gpio0", 912, R8A7795_CLK_S3D4), + DEF_MOD("can-fd", 914, R8A7795_CLK_S3D2), + DEF_MOD("can-if1", 915, R8A7795_CLK_S3D4), + DEF_MOD("can-if0", 916, R8A7795_CLK_S3D4), + DEF_MOD("i2c6", 918, R8A7795_CLK_S0D6), + DEF_MOD("i2c5", 919, R8A7795_CLK_S0D6), + DEF_MOD("i2c-dvfs", 926, R8A7795_CLK_CP), + DEF_MOD("i2c4", 927, R8A7795_CLK_S0D6), + DEF_MOD("i2c3", 928, R8A7795_CLK_S0D6), + DEF_MOD("i2c2", 929, R8A7795_CLK_S3D2), + DEF_MOD("i2c1", 930, R8A7795_CLK_S3D2), + DEF_MOD("i2c0", 931, R8A7795_CLK_S3D2), + DEF_MOD("ssi-all", 1005, R8A7795_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, R8A7795_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 struct mssr_mod_clk r8a7796_mod_clks[] = { + 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_S0D3), + DEF_MOD("sys-dmac1", 218, R8A7796_CLK_S0D3), + 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("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("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_S3D1), + DEF_MOD("audmac1", 501, R8A7796_CLK_S0D3), + DEF_MOD("audmac0", 502, R8A7796_CLK_S0D3), + DEF_MOD("drif7", 508, R8A7796_CLK_S3D2), + DEF_MOD("drif6", 509, R8A7796_CLK_S3D2), + DEF_MOD("drif5", 510, R8A7796_CLK_S3D2), + DEF_MOD("drif4", 511, R8A7796_CLK_S3D2), + DEF_MOD("drif3", 512, R8A7796_CLK_S3D2), + DEF_MOD("drif2", 513, R8A7796_CLK_S3D2), + DEF_MOD("drif1", 514, R8A7796_CLK_S3D2), + DEF_MOD("drif0", 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_S3D4), + DEF_MOD("ehci0", 703, R8A7796_CLK_S3D4), + DEF_MOD("hsusb", 704, R8A7796_CLK_S3D4), + 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)), +}; + +/* + * CPG Clock Data + */ + +/* + * MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 + * 14 13 19 17 (MHz) + *------------------------------------------------------------------- + * 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 + * 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 + * 0 0 1 0 Prohibited setting + * 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 + * 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 + * 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 + * 0 1 1 0 Prohibited setting + * 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 + * 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 + * 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 + * 1 0 1 0 Prohibited setting + * 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 + * 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 + * 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 + * 1 1 1 0 Prohibited setting + * 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 + */ +#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] = { + /* EXTAL div PLL1 mult PLL3 mult */ + { 1, 192, 192, }, + { 1, 192, 128, }, + { 0, /* Prohibited setting */ }, + { 1, 192, 192, }, + { 1, 160, 160, }, + { 1, 160, 106, }, + { 0, /* Prohibited setting */ }, + { 1, 160, 160, }, + { 1, 128, 128, }, + { 1, 128, 84, }, + { 0, /* Prohibited setting */ }, + { 1, 128, 128, }, + { 2, 192, 192, }, + { 2, 192, 128, }, + { 0, /* Prohibited setting */ }, + { 2, 192, 192, }, +}; + +/* + * SDn Clock + */ +#define CPG_SD_STP_HCK BIT(9) +#define CPG_SD_STP_CK BIT(8) + +#define CPG_SD_STP_MASK (CPG_SD_STP_HCK | CPG_SD_STP_CK) +#define CPG_SD_FC_MASK (0x7 << 2 | 0x3 << 0) + +#define CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) \ +{ \ + .val = ((stp_hck) ? CPG_SD_STP_HCK : 0) | \ + ((stp_ck) ? CPG_SD_STP_CK : 0) | \ + ((sd_srcfc) << 2) | \ + ((sd_fc) << 0), \ + .div = (sd_div), \ +} + +struct sd_div_table { + u32 val; + unsigned int div; +}; + +/* SDn divider + * sd_srcfc sd_fc div + * stp_hck stp_ck (div) (div) = sd_srcfc x sd_fc + *------------------------------------------------------------------- + * 0 0 0 (1) 1 (4) 4 + * 0 0 1 (2) 1 (4) 8 + * 1 0 2 (4) 1 (4) 16 + * 1 0 3 (8) 1 (4) 32 + * 1 0 4 (16) 1 (4) 64 + * 0 0 0 (1) 0 (2) 2 + * 0 0 1 (2) 0 (2) 4 + * 1 0 2 (4) 0 (2) 8 + * 1 0 3 (8) 0 (2) 16 + * 1 0 4 (16) 0 (2) 32 + */ +static const struct sd_div_table cpg_sd_div_table[] = { +/* CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) */ + CPG_SD_DIV_TABLE_DATA(0, 0, 0, 1, 4), + CPG_SD_DIV_TABLE_DATA(0, 0, 1, 1, 8), + CPG_SD_DIV_TABLE_DATA(1, 0, 2, 1, 16), + CPG_SD_DIV_TABLE_DATA(1, 0, 3, 1, 32), + CPG_SD_DIV_TABLE_DATA(1, 0, 4, 1, 64), + CPG_SD_DIV_TABLE_DATA(0, 0, 0, 0, 2), + CPG_SD_DIV_TABLE_DATA(0, 0, 1, 0, 4), + CPG_SD_DIV_TABLE_DATA(1, 0, 2, 0, 8), + CPG_SD_DIV_TABLE_DATA(1, 0, 3, 0, 16), + CPG_SD_DIV_TABLE_DATA(1, 0, 4, 0, 32), +}; + +static bool gen3_clk_is_mod(struct clk *clk) +{ + return (clk->id >> 16) == CPG_MOD; +} + +static int gen3_clk_get_mod(struct clk *clk, const struct mssr_mod_clk **mssr) +{ + struct gen3_clk_priv *priv = dev_get_priv(clk->dev); + const unsigned long clkid = clk->id & 0xffff; + int i; + + if (!gen3_clk_is_mod(clk)) + return -EINVAL; + + for (i = 0; i < priv->mod_clk_size; i++) { + if (priv->mod_clk[i].id != MOD_CLK_ID(clkid)) + continue; + + *mssr = &priv->mod_clk[i]; + return 0; + } + + return -ENODEV; +} + +static int gen3_clk_get_core(struct clk *clk, const struct cpg_core_clk **core) +{ + const unsigned long clkid = clk->id & 0xffff; + int i; + + if (gen3_clk_is_mod(clk)) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(gen3_core_clks); i++) { + if (gen3_core_clks[i].id != clkid) + continue; + + *core = &gen3_core_clks[i]; + return 0; + } + + return -ENODEV; +} + +static int gen3_clk_get_parent(struct clk *clk, struct clk *parent) +{ + const struct cpg_core_clk *core; + const struct mssr_mod_clk *mssr; + int ret; + + if (gen3_clk_is_mod(clk)) { + ret = gen3_clk_get_mod(clk, &mssr); + if (ret) + return ret; + + parent->id = mssr->parent; + } else { + ret = gen3_clk_get_core(clk, &core); + if (ret) + return ret; + + if (core->type == CLK_TYPE_IN) + parent->id = ~0; /* Top-level clock */ + else + parent->id = core->parent; + } + + parent->dev = clk->dev; + + return 0; +} + +static int gen3_clk_endisable(struct clk *clk, bool enable) +{ + struct gen3_clk_priv *priv = dev_get_priv(clk->dev); + const unsigned long clkid = clk->id & 0xffff; + const unsigned int reg = clkid / 100; + const unsigned int bit = clkid % 100; + const u32 bitmask = BIT(bit); + + if (!gen3_clk_is_mod(clk)) + return -EINVAL; + + debug("%s[%i] MSTP %lu=%02u/%02u %s\n", __func__, __LINE__, + clkid, reg, bit, enable ? "ON" : "OFF"); + + if (enable) { + clrbits_le32(priv->base + SMSTPCR(reg), bitmask); + return wait_for_bit("MSTP", priv->base + MSTPSR(reg), + bitmask, 0, 100, 0); + } else { + setbits_le32(priv->base + SMSTPCR(reg), bitmask); + return 0; + } +} + +static int gen3_clk_enable(struct clk *clk) +{ + return gen3_clk_endisable(clk, true); +} + +static int gen3_clk_disable(struct clk *clk) +{ + return gen3_clk_endisable(clk, false); +} + +static ulong gen3_clk_get_rate(struct clk *clk) +{ + struct gen3_clk_priv *priv = dev_get_priv(clk->dev); + struct clk parent; + const struct cpg_core_clk *core; + const struct rcar_gen3_cpg_pll_config *pll_config = + priv->cpg_pll_config; + u32 value, mult, rate = 0; + int i, ret; + + debug("%s[%i] Clock: id=%lu\n", __func__, __LINE__, clk->id); + + ret = gen3_clk_get_parent(clk, &parent); + if (ret) { + printf("%s[%i] parent fail, ret=%i\n", __func__, __LINE__, ret); + return ret; + } + + if (gen3_clk_is_mod(clk)) { + rate = gen3_clk_get_rate(&parent); + debug("%s[%i] MOD clk: parent=%lu => rate=%u\n", + __func__, __LINE__, parent.id, rate); + return rate; + } + + ret = gen3_clk_get_core(clk, &core); + if (ret) + return ret; + + switch (core->type) { + case CLK_TYPE_IN: + if (core->id == CLK_EXTAL) { + rate = clk_get_rate(&priv->clk_extal); + debug("%s[%i] EXTAL clk: rate=%u\n", + __func__, __LINE__, rate); + return rate; + } + + if (core->id == CLK_EXTALR) { + rate = clk_get_rate(&priv->clk_extalr); + debug("%s[%i] EXTALR clk: rate=%u\n", + __func__, __LINE__, rate); + return rate; + } + + return -EINVAL; + + case CLK_TYPE_GEN3_MAIN: + rate = gen3_clk_get_rate(&parent) / pll_config->extal_div; + debug("%s[%i] MAIN clk: parent=%i extal_div=%i => rate=%u\n", + __func__, __LINE__, + core->parent, pll_config->extal_div, rate); + return rate; + + case CLK_TYPE_GEN3_PLL0: + value = readl(priv->base + CPG_PLL0CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + rate = gen3_clk_get_rate(&parent) * mult; + debug("%s[%i] PLL0 clk: parent=%i mult=%u => rate=%u\n", + __func__, __LINE__, core->parent, mult, rate); + return rate; + + case CLK_TYPE_GEN3_PLL1: + rate = gen3_clk_get_rate(&parent) * pll_config->pll1_mult; + debug("%s[%i] PLL1 clk: parent=%i mul=%i => rate=%u\n", + __func__, __LINE__, + core->parent, pll_config->pll1_mult, rate); + return rate; + + case CLK_TYPE_GEN3_PLL2: + value = readl(priv->base + CPG_PLL2CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + rate = gen3_clk_get_rate(&parent) * mult; + debug("%s[%i] PLL2 clk: parent=%i mult=%u => rate=%u\n", + __func__, __LINE__, core->parent, mult, rate); + return rate; + + case CLK_TYPE_GEN3_PLL3: + rate = gen3_clk_get_rate(&parent) * pll_config->pll3_mult; + debug("%s[%i] PLL3 clk: parent=%i mul=%i => rate=%u\n", + __func__, __LINE__, + core->parent, pll_config->pll3_mult, rate); + return rate; + + case CLK_TYPE_GEN3_PLL4: + value = readl(priv->base + CPG_PLL4CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + rate = gen3_clk_get_rate(&parent) * mult; + debug("%s[%i] PLL4 clk: parent=%i mult=%u => rate=%u\n", + __func__, __LINE__, core->parent, mult, rate); + return rate; + + case CLK_TYPE_FF: + rate = (gen3_clk_get_rate(&parent) * core->mult) / core->div; + debug("%s[%i] FIXED clk: parent=%i div=%i mul=%i => rate=%u\n", + __func__, __LINE__, + core->parent, core->mult, core->div, rate); + return rate; + + case CLK_TYPE_GEN3_SD: /* FIXME */ + value = readl(priv->base + core->offset); + value &= CPG_SD_STP_MASK | CPG_SD_FC_MASK; + + for (i = 0; i < ARRAY_SIZE(cpg_sd_div_table); i++) { + if (cpg_sd_div_table[i].val != value) + continue; + + rate = gen3_clk_get_rate(&parent) / + cpg_sd_div_table[i].div; + debug("%s[%i] SD clk: parent=%i div=%i => rate=%u\n", + __func__, __LINE__, + core->parent, cpg_sd_div_table[i].div, rate); + + return rate; + } + + return -EINVAL; + } + + printf("%s[%i] unknown fail\n", __func__, __LINE__); + + return -ENOENT; +} + +static ulong gen3_clk_set_rate(struct clk *clk, ulong rate) +{ + return gen3_clk_get_rate(clk); +} + +static int gen3_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args) +{ + if (args->args_count != 2) { + debug("Invaild args_count: %d\n", args->args_count); + return -EINVAL; + } + + clk->id = (args->args[0] << 16) | args->args[1]; + + return 0; +} + +static const struct clk_ops gen3_clk_ops = { + .enable = gen3_clk_enable, + .disable = gen3_clk_disable, + .get_rate = gen3_clk_get_rate, + .set_rate = gen3_clk_set_rate, + .of_xlate = gen3_clk_of_xlate, +}; + +enum gen3_clk_model { + CLK_R8A7795, + CLK_R8A7796, +}; + +static int gen3_clk_probe(struct udevice *dev) +{ + struct gen3_clk_priv *priv = dev_get_priv(dev); + enum gen3_clk_model model = dev_get_driver_data(dev); + fdt_addr_t rst_base; + u32 cpg_mode; + int ret; + + priv->base = (struct gen3_base *)devfdt_get_addr(dev); + if (!priv->base) + return -EINVAL; + + switch (model) { + case CLK_R8A7795: + priv->mod_clk = r8a7795_mod_clks; + priv->mod_clk_size = ARRAY_SIZE(r8a7795_mod_clks); + ret = fdt_node_offset_by_compatible(gd->fdt_blob, -1, + "renesas,r8a7795-rst"); + if (ret < 0) + return ret; + break; + case CLK_R8A7796: + priv->mod_clk = r8a7796_mod_clks; + priv->mod_clk_size = ARRAY_SIZE(r8a7796_mod_clks); + ret = fdt_node_offset_by_compatible(gd->fdt_blob, -1, + "renesas,r8a7796-rst"); + if (ret < 0) + return ret; + break; + default: + return -EINVAL; + } + + rst_base = fdtdec_get_addr(gd->fdt_blob, ret, "reg"); + if (rst_base == FDT_ADDR_T_NONE) + return -EINVAL; + + cpg_mode = readl(rst_base + CPG_RST_MODEMR); + + priv->cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; + if (!priv->cpg_pll_config->extal_div) + return -EINVAL; + + ret = clk_get_by_name(dev, "extal", &priv->clk_extal); + if (ret < 0) + return ret; + + ret = clk_get_by_name(dev, "extalr", &priv->clk_extalr); + if (ret < 0) + return ret; + + return 0; +} + +static const struct udevice_id gen3_clk_ids[] = { + { .compatible = "renesas,r8a7795-cpg-mssr", .data = CLK_R8A7795 }, + { .compatible = "renesas,r8a7796-cpg-mssr", .data = CLK_R8A7796 }, + { } +}; + +U_BOOT_DRIVER(clk_gen3) = { + .name = "clk_gen3", + .id = UCLASS_CLK, + .of_match = gen3_clk_ids, + .priv_auto_alloc_size = sizeof(struct gen3_clk_priv), + .ops = &gen3_clk_ops, + .probe = gen3_clk_probe, +}; -- 2.25.1