| // 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 "rcar-cpg-lib.h" |
| #include "renesas-cpg-mssr.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_SD, |
| 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_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) |
| |
| #define DEF_SD(_name, _id, _parent, _offset) \ |
| DEF_BASE(_name, _id, CLK_TYPE_R8A779A0_SD, _parent, .offset = _offset) |
| |
| #define DEF_MDSEL(_name, _id, _md, _parent0, _div0, _parent1, _div1) \ |
| DEF_BASE(_name, _id, CLK_TYPE_R8A779A0_MDSEL, \ |
| (_parent0) << 16 | (_parent1), \ |
| .div = (_div0) << 16 | (_div1), .offset = _md) |
| |
| #define DEF_OSC(_name, _id, _parent, _div) \ |
| DEF_BASE(_name, _id, CLK_TYPE_R8A779A0_OSC, _parent, .div = _div) |
| |
| 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_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL5_DIV4, 1, 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("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_EXTAL, 2, 1), |
| DEF_FIXED("cp", R8A779A0_CLK_CP, CLK_EXTAL, 2, 1), |
| DEF_FIXED("cl16mck", R8A779A0_CLK_CL16MCK, CLK_PLL1_DIV2, 64, 1), |
| |
| DEF_SD("sd0", R8A779A0_CLK_SD0, CLK_SDSRC, 0x870), |
| |
| 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_DIV6P1("dsi", R8A779A0_CLK_DSI, CLK_PLL5_DIV4, 0x884), |
| |
| DEF_OSC("osc", R8A779A0_CLK_OSC, CLK_EXTAL, 8), |
| DEF_MDSEL("r", R8A779A0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1), |
| }; |
| |
| static const struct mssr_mod_clk r8a779a0_mod_clks[] __initconst = { |
| DEF_MOD("avb0", 211, R8A779A0_CLK_S3D2), |
| DEF_MOD("avb1", 212, R8A779A0_CLK_S3D2), |
| DEF_MOD("avb2", 213, R8A779A0_CLK_S3D2), |
| DEF_MOD("avb3", 214, R8A779A0_CLK_S3D2), |
| DEF_MOD("avb4", 215, R8A779A0_CLK_S3D2), |
| DEF_MOD("avb5", 216, R8A779A0_CLK_S3D2), |
| DEF_MOD("csi40", 331, R8A779A0_CLK_CSI0), |
| DEF_MOD("csi41", 400, R8A779A0_CLK_CSI0), |
| DEF_MOD("csi42", 401, R8A779A0_CLK_CSI0), |
| DEF_MOD("csi43", 402, R8A779A0_CLK_CSI0), |
| DEF_MOD("du", 411, R8A779A0_CLK_S3D1), |
| DEF_MOD("dsi0", 415, R8A779A0_CLK_DSI), |
| DEF_MOD("dsi1", 416, R8A779A0_CLK_DSI), |
| DEF_MOD("fcpvd0", 508, R8A779A0_CLK_S3D1), |
| DEF_MOD("fcpvd1", 509, R8A779A0_CLK_S3D1), |
| DEF_MOD("hscif0", 514, R8A779A0_CLK_S1D2), |
| DEF_MOD("hscif1", 515, R8A779A0_CLK_S1D2), |
| DEF_MOD("hscif2", 516, R8A779A0_CLK_S1D2), |
| DEF_MOD("hscif3", 517, R8A779A0_CLK_S1D2), |
| DEF_MOD("i2c0", 518, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c1", 519, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c2", 520, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c3", 521, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c4", 522, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c5", 523, R8A779A0_CLK_S1D4), |
| DEF_MOD("i2c6", 524, R8A779A0_CLK_S1D4), |
| DEF_MOD("ispcs0", 612, R8A779A0_CLK_S1D1), |
| DEF_MOD("ispcs1", 613, R8A779A0_CLK_S1D1), |
| DEF_MOD("ispcs2", 614, R8A779A0_CLK_S1D1), |
| DEF_MOD("ispcs3", 615, R8A779A0_CLK_S1D1), |
| DEF_MOD("msi0", 618, R8A779A0_CLK_MSO), |
| DEF_MOD("msi1", 619, R8A779A0_CLK_MSO), |
| DEF_MOD("msi2", 620, R8A779A0_CLK_MSO), |
| DEF_MOD("msi3", 621, R8A779A0_CLK_MSO), |
| DEF_MOD("msi4", 622, R8A779A0_CLK_MSO), |
| DEF_MOD("msi5", 623, R8A779A0_CLK_MSO), |
| 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), |
| DEF_MOD("sdhi0", 706, R8A779A0_CLK_SD0), |
| DEF_MOD("sydm1", 709, R8A779A0_CLK_S1D2), |
| DEF_MOD("sydm2", 710, R8A779A0_CLK_S1D2), |
| DEF_MOD("tmu0", 713, R8A779A0_CLK_CL16MCK), |
| DEF_MOD("tmu1", 714, R8A779A0_CLK_S1D4), |
| DEF_MOD("tmu2", 715, R8A779A0_CLK_S1D4), |
| DEF_MOD("tmu3", 716, R8A779A0_CLK_S1D4), |
| DEF_MOD("tmu4", 717, R8A779A0_CLK_S1D4), |
| DEF_MOD("vin00", 730, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin01", 731, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin02", 800, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin03", 801, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin04", 802, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin05", 803, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin06", 804, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin07", 805, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin10", 806, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin11", 807, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin12", 808, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin13", 809, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin14", 810, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin15", 811, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin16", 812, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin17", 813, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin20", 814, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin21", 815, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin22", 816, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin23", 817, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin24", 818, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin25", 819, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin26", 820, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin27", 821, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin30", 822, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin31", 823, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin32", 824, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin33", 825, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin34", 826, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin35", 827, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin36", 828, R8A779A0_CLK_S1D1), |
| DEF_MOD("vin37", 829, R8A779A0_CLK_S1D1), |
| DEF_MOD("vspd0", 830, R8A779A0_CLK_S3D1), |
| DEF_MOD("vspd1", 831, R8A779A0_CLK_S3D1), |
| DEF_MOD("rwdt", 907, R8A779A0_CLK_R), |
| DEF_MOD("cmt0", 910, R8A779A0_CLK_R), |
| DEF_MOD("cmt1", 911, R8A779A0_CLK_R), |
| DEF_MOD("cmt2", 912, R8A779A0_CLK_R), |
| DEF_MOD("cmt3", 913, R8A779A0_CLK_R), |
| DEF_MOD("pfc0", 915, R8A779A0_CLK_CP), |
| DEF_MOD("pfc1", 916, R8A779A0_CLK_CP), |
| DEF_MOD("pfc2", 917, R8A779A0_CLK_CP), |
| DEF_MOD("pfc3", 918, R8A779A0_CLK_CP), |
| DEF_MOD("tsc", 919, R8A779A0_CLK_CL16MCK), |
| DEF_MOD("vspx0", 1028, R8A779A0_CLK_S1D1), |
| DEF_MOD("vspx1", 1029, R8A779A0_CLK_S1D1), |
| DEF_MOD("vspx2", 1030, R8A779A0_CLK_S1D1), |
| DEF_MOD("vspx3", 1031, R8A779A0_CLK_S1D1), |
| }; |
| |
| static const struct rcar_r8a779a0_cpg_pll_config *cpg_pll_config __initdata; |
| static unsigned int cpg_clk_extalr __initdata; |
| static u32 cpg_mode __initdata; |
| |
| static 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_SD: |
| return cpg_sd_clk_register(core->name, base, core->offset, |
| __clk_get_name(parent), notifiers, |
| false); |
| 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); |
| } |
| |
| static const unsigned int r8a779a0_crit_mod_clks[] __initconst = { |
| MOD_CLK_ID(907), /* RWDT */ |
| }; |
| |
| /* |
| * 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, |
| |
| /* Critical Module Clocks */ |
| .crit_mod_clks = r8a779a0_crit_mod_clks, |
| .num_crit_mod_clks = ARRAY_SIZE(r8a779a0_crit_mod_clks), |
| |
| /* Callbacks */ |
| .init = r8a779a0_cpg_mssr_init, |
| .cpg_clk_register = rcar_r8a779a0_cpg_clk_register, |
| |
| .reg_layout = CLK_REG_LAYOUT_RCAR_V3U, |
| }; |
