clk/renesas/r8a77470-cpg-mssr.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * r8a77470 Clock Pulse Generator / Module Standby and Software Reset
0004  *
0005  * Copyright (C) 2018 Renesas Electronics Corp.
0006  */
0007
0008 #include <linux/device.h>
0009 #include <linux/init.h>
0010 #include <linux/kernel.h>
0011 #include <linux/soc/renesas/rcar-rst.h>
0012
0013 #include <dt-bindings/clock/r8a77470-cpg-mssr.h>
0014
0015 #include "renesas-cpg-mssr.h"
0016 #include "rcar-gen2-cpg.h"
0017
0018 enum clk_ids {
0019     /* Core Clock Outputs exported to DT */
0020     LAST_DT_CORE_CLK = R8A77470_CLK_OSC,
0021
0022     /* External Input Clocks */
0023     CLK_EXTAL,
0024     CLK_USB_EXTAL,
0025
0026     /* Internal Core Clocks */
0027     CLK_MAIN,
0028     CLK_PLL0,
0029     CLK_PLL1,
0030     CLK_PLL3,
0031     CLK_PLL1_DIV2,
0032
0033     /* Module Clocks */
0034     MOD_CLK_BASE
0035 };
0036
0037 static const struct cpg_core_clk r8a77470_core_clks[] __initconst = {
0038     /* External Clock Inputs */
0039     DEF_INPUT("extal",  CLK_EXTAL),
0040     DEF_INPUT("usb_extal",  CLK_USB_EXTAL),
0041
0042     /* Internal Core Clocks */
0043     DEF_BASE(".main",   CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
0044     DEF_BASE(".pll0",   CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
0045     DEF_BASE(".pll1",   CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
0046     DEF_BASE(".pll3",   CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
0047
0048     DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
0049
0050     /* Core Clock Outputs */
0051     DEF_BASE("sdh",  R8A77470_CLK_SDH,  CLK_TYPE_GEN2_SDH,  CLK_PLL1),
0052     DEF_BASE("sd0",  R8A77470_CLK_SD0,  CLK_TYPE_GEN2_SD0,  CLK_PLL1),
0053     DEF_BASE("sd1",  R8A77470_CLK_SD1,  CLK_TYPE_GEN2_SD1,  CLK_PLL1),
0054     DEF_BASE("qspi", R8A77470_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
0055     DEF_BASE("rcan", R8A77470_CLK_RCAN, CLK_TYPE_GEN2_RCAN, CLK_USB_EXTAL),
0056
0057     DEF_FIXED("z2",    R8A77470_CLK_Z2, CLK_PLL0,       1, 1),
0058     DEF_FIXED("zx",    R8A77470_CLK_ZX, CLK_PLL1,       3, 1),
0059     DEF_FIXED("zs",    R8A77470_CLK_ZS, CLK_PLL1,       6, 1),
0060     DEF_FIXED("hp",    R8A77470_CLK_HP, CLK_PLL1,      12, 1),
0061     DEF_FIXED("b",     R8A77470_CLK_B,  CLK_PLL1,      12, 1),
0062     DEF_FIXED("lb",    R8A77470_CLK_LB,     CLK_PLL1,      24, 1),
0063     DEF_FIXED("p",     R8A77470_CLK_P,  CLK_PLL1,      24, 1),
0064     DEF_FIXED("cl",    R8A77470_CLK_CL, CLK_PLL1,      48, 1),
0065     DEF_FIXED("cp",    R8A77470_CLK_CP, CLK_PLL1,      48, 1),
0066     DEF_FIXED("m2",    R8A77470_CLK_M2, CLK_PLL1,       8, 1),
0067     DEF_FIXED("zb3",   R8A77470_CLK_ZB3,    CLK_PLL3,       4, 1),
0068     DEF_FIXED("mp",    R8A77470_CLK_MP, CLK_PLL1_DIV2,     15, 1),
0069     DEF_FIXED("cpex",  R8A77470_CLK_CPEX,   CLK_EXTAL,      2, 1),
0070     DEF_FIXED("r",     R8A77470_CLK_R,  CLK_PLL1,   49152, 1),
0071     DEF_FIXED("osc",   R8A77470_CLK_OSC,    CLK_PLL1,   12288, 1),
0072
0073     DEF_DIV6P1("sd2",  R8A77470_CLK_SD2,    CLK_PLL1_DIV2,  0x078),
0074 };
0075
0076 static const struct mssr_mod_clk r8a77470_mod_clks[] __initconst = {
0077     DEF_MOD("msiof0",          0,   R8A77470_CLK_MP),
0078     DEF_MOD("vcp0",          101,   R8A77470_CLK_ZS),
0079     DEF_MOD("vpc0",          103,   R8A77470_CLK_ZS),
0080     DEF_MOD("tmu1",          111,   R8A77470_CLK_P),
0081     DEF_MOD("3dg",           112,   R8A77470_CLK_ZS),
0082     DEF_MOD("2d-dmac",       115,   R8A77470_CLK_ZS),
0083     DEF_MOD("fdp1-0",        119,   R8A77470_CLK_ZS),
0084     DEF_MOD("tmu3",          121,   R8A77470_CLK_P),
0085     DEF_MOD("tmu2",          122,   R8A77470_CLK_P),
0086     DEF_MOD("cmt0",          124,   R8A77470_CLK_R),
0087     DEF_MOD("vsp1du0",       128,   R8A77470_CLK_ZS),
0088     DEF_MOD("vsps",          131,   R8A77470_CLK_ZS),
0089     DEF_MOD("msiof2",        205,   R8A77470_CLK_MP),
0090     DEF_MOD("msiof1",        208,   R8A77470_CLK_MP),
0091     DEF_MOD("sys-dmac1",         218,   R8A77470_CLK_ZS),
0092     DEF_MOD("sys-dmac0",         219,   R8A77470_CLK_ZS),
0093     DEF_MOD("sdhi2",         312,   R8A77470_CLK_SD2),
0094     DEF_MOD("sdhi1",         313,   R8A77470_CLK_SD1),
0095     DEF_MOD("sdhi0",         314,   R8A77470_CLK_SD0),
0096     DEF_MOD("usbhs-dmac0-ch1",   326,   R8A77470_CLK_HP),
0097     DEF_MOD("usbhs-dmac1-ch1",   327,   R8A77470_CLK_HP),
0098     DEF_MOD("cmt1",          329,   R8A77470_CLK_R),
0099     DEF_MOD("usbhs-dmac0-ch0",   330,   R8A77470_CLK_HP),
0100     DEF_MOD("usbhs-dmac1-ch0",   331,   R8A77470_CLK_HP),
0101     DEF_MOD("rwdt",          402,   R8A77470_CLK_R),
0102     DEF_MOD("irqc",          407,   R8A77470_CLK_CP),
0103     DEF_MOD("intc-sys",      408,   R8A77470_CLK_ZS),
0104     DEF_MOD("audio-dmac0",       502,   R8A77470_CLK_HP),
0105     DEF_MOD("pwm",           523,   R8A77470_CLK_P),
0106     DEF_MOD("usb-ehci-0",        703,   R8A77470_CLK_MP),
0107     DEF_MOD("usbhs-0",       704,   R8A77470_CLK_HP),
0108     DEF_MOD("usb-ehci-1",        705,   R8A77470_CLK_MP),
0109     DEF_MOD("usbhs-1",       706,   R8A77470_CLK_HP),
0110     DEF_MOD("hscif2",        713,   R8A77470_CLK_ZS),
0111     DEF_MOD("scif5",         714,   R8A77470_CLK_P),
0112     DEF_MOD("scif4",         715,   R8A77470_CLK_P),
0113     DEF_MOD("hscif1",        716,   R8A77470_CLK_ZS),
0114     DEF_MOD("hscif0",        717,   R8A77470_CLK_ZS),
0115     DEF_MOD("scif3",         718,   R8A77470_CLK_P),
0116     DEF_MOD("scif2",         719,   R8A77470_CLK_P),
0117     DEF_MOD("scif1",         720,   R8A77470_CLK_P),
0118     DEF_MOD("scif0",         721,   R8A77470_CLK_P),
0119     DEF_MOD("du1",           723,   R8A77470_CLK_ZX),
0120     DEF_MOD("du0",           724,   R8A77470_CLK_ZX),
0121     DEF_MOD("ipmmu-sgx",         800,   R8A77470_CLK_ZX),
0122     DEF_MOD("etheravb",      812,   R8A77470_CLK_HP),
0123     DEF_MOD("ether",         813,   R8A77470_CLK_P),
0124     DEF_MOD("gpio5",         907,   R8A77470_CLK_CP),
0125     DEF_MOD("gpio4",         908,   R8A77470_CLK_CP),
0126     DEF_MOD("gpio3",         909,   R8A77470_CLK_CP),
0127     DEF_MOD("gpio2",         910,   R8A77470_CLK_CP),
0128     DEF_MOD("gpio1",         911,   R8A77470_CLK_CP),
0129     DEF_MOD("gpio0",         912,   R8A77470_CLK_CP),
0130     DEF_MOD("can1",          915,   R8A77470_CLK_P),
0131     DEF_MOD("can0",          916,   R8A77470_CLK_P),
0132     DEF_MOD("qspi_mod-1",        917,   R8A77470_CLK_QSPI),
0133     DEF_MOD("qspi_mod-0",        918,   R8A77470_CLK_QSPI),
0134     DEF_MOD("i2c4",          927,   R8A77470_CLK_HP),
0135     DEF_MOD("i2c3",          928,   R8A77470_CLK_HP),
0136     DEF_MOD("i2c2",          929,   R8A77470_CLK_HP),
0137     DEF_MOD("i2c1",          930,   R8A77470_CLK_HP),
0138     DEF_MOD("i2c0",          931,   R8A77470_CLK_HP),
0139     DEF_MOD("ssi-all",      1005,   R8A77470_CLK_P),
0140     DEF_MOD("ssi9",         1006,   MOD_CLK_ID(1005)),
0141     DEF_MOD("ssi8",         1007,   MOD_CLK_ID(1005)),
0142     DEF_MOD("ssi7",         1008,   MOD_CLK_ID(1005)),
0143     DEF_MOD("ssi6",         1009,   MOD_CLK_ID(1005)),
0144     DEF_MOD("ssi5",         1010,   MOD_CLK_ID(1005)),
0145     DEF_MOD("ssi4",         1011,   MOD_CLK_ID(1005)),
0146     DEF_MOD("ssi3",         1012,   MOD_CLK_ID(1005)),
0147     DEF_MOD("ssi2",         1013,   MOD_CLK_ID(1005)),
0148     DEF_MOD("ssi1",         1014,   MOD_CLK_ID(1005)),
0149     DEF_MOD("ssi0",         1015,   MOD_CLK_ID(1005)),
0150     DEF_MOD("scu-all",      1017,   R8A77470_CLK_P),
0151     DEF_MOD("scu-dvc1",     1018,   MOD_CLK_ID(1017)),
0152     DEF_MOD("scu-dvc0",     1019,   MOD_CLK_ID(1017)),
0153     DEF_MOD("scu-ctu1-mix1",    1020,   MOD_CLK_ID(1017)),
0154     DEF_MOD("scu-ctu0-mix0",    1021,   MOD_CLK_ID(1017)),
0155     DEF_MOD("scu-src6",     1025,   MOD_CLK_ID(1017)),
0156     DEF_MOD("scu-src5",     1026,   MOD_CLK_ID(1017)),
0157     DEF_MOD("scu-src4",     1027,   MOD_CLK_ID(1017)),
0158     DEF_MOD("scu-src3",     1028,   MOD_CLK_ID(1017)),
0159     DEF_MOD("scu-src2",     1029,   MOD_CLK_ID(1017)),
0160     DEF_MOD("scu-src1",     1030,   MOD_CLK_ID(1017)),
0161 };
0162
0163 static const unsigned int r8a77470_crit_mod_clks[] __initconst = {
0164     MOD_CLK_ID(402),    /* RWDT */
0165     MOD_CLK_ID(408),    /* INTC-SYS (GIC) */
0166 };
0167
0168 /*
0169  * CPG Clock Data
0170  */
0171
0172 /*
0173  *    MD    EXTAL       PLL0    PLL1    PLL3
0174  * 14 13    (MHz)       *1  *2
0175  *---------------------------------------------------
0176  * 0  0     20      x80 x78 x50
0177  * 0  1     26      x60 x60 x56
0178  * 1  0     Prohibited setting
0179  * 1  1     30      x52 x52 x50
0180  *
0181  * *1 : Table 7.4 indicates VCO output (PLL0 = VCO)
0182  * *2 : Table 7.4 indicates VCO output (PLL1 = VCO)
0183  */
0184 #define CPG_PLL_CONFIG_INDEX(md)    ((((md) & BIT(14)) >> 13) | \
0185                      (((md) & BIT(13)) >> 13))
0186
0187 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[4] __initconst = {
0188     /* EXTAL div    PLL1 mult x2    PLL3 mult */
0189     { 1,        156,        50, },
0190     { 1,        120,        56, },
0191     { /* Invalid*/              },
0192     { 1,        104,        50, },
0193 };
0194
0195 static int __init r8a77470_cpg_mssr_init(struct device *dev)
0196 {
0197     const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
0198     u32 cpg_mode;
0199     int error;
0200
0201     error = rcar_rst_read_mode_pins(&cpg_mode);
0202     if (error)
0203         return error;
0204
0205     cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
0206
0207     return rcar_gen2_cpg_init(cpg_pll_config, 2, cpg_mode);
0208 }
0209
0210 const struct cpg_mssr_info r8a77470_cpg_mssr_info __initconst = {
0211     /* Core Clocks */
0212     .core_clks = r8a77470_core_clks,
0213     .num_core_clks = ARRAY_SIZE(r8a77470_core_clks),
0214     .last_dt_core_clk = LAST_DT_CORE_CLK,
0215     .num_total_core_clks = MOD_CLK_BASE,
0216
0217     /* Module Clocks */
0218     .mod_clks = r8a77470_mod_clks,
0219     .num_mod_clks = ARRAY_SIZE(r8a77470_mod_clks),
0220     .num_hw_mod_clks = 12 * 32,
0221
0222     /* Critical Module Clocks */
0223     .crit_mod_clks = r8a77470_crit_mod_clks,
0224     .num_crit_mod_clks = ARRAY_SIZE(r8a77470_crit_mod_clks),
0225
0226     /* Callbacks */
0227     .init = r8a77470_cpg_mssr_init,
0228     .cpg_clk_register = rcar_gen2_cpg_clk_register,
0229 };