clk/renesas/r8a7743-cpg-mssr.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * r8a7743 Clock Pulse Generator / Module Standby and Software Reset
0004  *
0005  * Copyright (C) 2016 Cogent Embedded Inc.
0006  */
0007
0008 #include <linux/device.h>
0009 #include <linux/init.h>
0010 #include <linux/kernel.h>
0011 #include <linux/of.h>
0012 #include <linux/soc/renesas/rcar-rst.h>
0013
0014 #include <dt-bindings/clock/r8a7743-cpg-mssr.h>
0015
0016 #include "renesas-cpg-mssr.h"
0017 #include "rcar-gen2-cpg.h"
0018
0019 enum clk_ids {
0020     /* Core Clock Outputs exported to DT */
0021     LAST_DT_CORE_CLK = R8A7743_CLK_OSC,
0022
0023     /* External Input Clocks */
0024     CLK_EXTAL,
0025     CLK_USB_EXTAL,
0026
0027     /* Internal Core Clocks */
0028     CLK_MAIN,
0029     CLK_PLL0,
0030     CLK_PLL1,
0031     CLK_PLL3,
0032     CLK_PLL1_DIV2,
0033
0034     /* Module Clocks */
0035     MOD_CLK_BASE
0036 };
0037
0038 static struct cpg_core_clk r8a7743_core_clks[] __initdata = {
0039     /* External Clock Inputs */
0040     DEF_INPUT("extal",  CLK_EXTAL),
0041     DEF_INPUT("usb_extal",  CLK_USB_EXTAL),
0042
0043     /* Internal Core Clocks */
0044     DEF_BASE(".main",   CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
0045     DEF_BASE(".pll0",   CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
0046     DEF_BASE(".pll1",   CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
0047     DEF_BASE(".pll3",   CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
0048
0049     DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
0050
0051     /* Core Clock Outputs */
0052     DEF_BASE("z",    R8A7743_CLK_Z,    CLK_TYPE_GEN2_Z, CLK_PLL0),
0053     DEF_BASE("sdh",  R8A7743_CLK_SDH,  CLK_TYPE_GEN2_SDH,   CLK_PLL1),
0054     DEF_BASE("sd0",  R8A7743_CLK_SD0,  CLK_TYPE_GEN2_SD0,   CLK_PLL1),
0055     DEF_BASE("qspi", R8A7743_CLK_QSPI, CLK_TYPE_GEN2_QSPI,  CLK_PLL1_DIV2),
0056     DEF_BASE("rcan", R8A7743_CLK_RCAN, CLK_TYPE_GEN2_RCAN,  CLK_USB_EXTAL),
0057
0058     DEF_FIXED("zg",    R8A7743_CLK_ZG,  CLK_PLL1,       3, 1),
0059     DEF_FIXED("zx",    R8A7743_CLK_ZX,  CLK_PLL1,       3, 1),
0060     DEF_FIXED("zs",    R8A7743_CLK_ZS,  CLK_PLL1,       6, 1),
0061     DEF_FIXED("hp",    R8A7743_CLK_HP,  CLK_PLL1,      12, 1),
0062     DEF_FIXED("b",     R8A7743_CLK_B,   CLK_PLL1,      12, 1),
0063     DEF_FIXED("lb",    R8A7743_CLK_LB,  CLK_PLL1,      24, 1),
0064     DEF_FIXED("p",     R8A7743_CLK_P,   CLK_PLL1,      24, 1),
0065     DEF_FIXED("cl",    R8A7743_CLK_CL,  CLK_PLL1,      48, 1),
0066     DEF_FIXED("m2",    R8A7743_CLK_M2,  CLK_PLL1,       8, 1),
0067     DEF_FIXED("zb3",   R8A7743_CLK_ZB3, CLK_PLL3,       4, 1),
0068     DEF_FIXED("zb3d2", R8A7743_CLK_ZB3D2,   CLK_PLL3,       8, 1),
0069     DEF_FIXED("ddr",   R8A7743_CLK_DDR, CLK_PLL3,       8, 1),
0070     DEF_FIXED("mp",    R8A7743_CLK_MP,  CLK_PLL1_DIV2,     15, 1),
0071     DEF_FIXED("cp",    R8A7743_CLK_CP,  CLK_EXTAL,      2, 1),
0072     DEF_FIXED("r",     R8A7743_CLK_R,   CLK_PLL1,   49152, 1),
0073     DEF_FIXED("osc",   R8A7743_CLK_OSC, CLK_PLL1,   12288, 1),
0074
0075     DEF_DIV6P1("sd2",  R8A7743_CLK_SD2, CLK_PLL1_DIV2,  0x078),
0076     DEF_DIV6P1("sd3",  R8A7743_CLK_SD3, CLK_PLL1_DIV2,  0x26c),
0077     DEF_DIV6P1("mmc0", R8A7743_CLK_MMC0,    CLK_PLL1_DIV2,  0x240),
0078 };
0079
0080 static const struct mssr_mod_clk r8a7743_mod_clks[] __initconst = {
0081     DEF_MOD("msiof0",          0,   R8A7743_CLK_MP),
0082     DEF_MOD("vcp0",          101,   R8A7743_CLK_ZS),
0083     DEF_MOD("vpc0",          103,   R8A7743_CLK_ZS),
0084     DEF_MOD("tmu1",          111,   R8A7743_CLK_P),
0085     DEF_MOD("3dg",           112,   R8A7743_CLK_ZG),
0086     DEF_MOD("2d-dmac",       115,   R8A7743_CLK_ZS),
0087     DEF_MOD("fdp1-1",        118,   R8A7743_CLK_ZS),
0088     DEF_MOD("fdp1-0",        119,   R8A7743_CLK_ZS),
0089     DEF_MOD("tmu3",          121,   R8A7743_CLK_P),
0090     DEF_MOD("tmu2",          122,   R8A7743_CLK_P),
0091     DEF_MOD("cmt0",          124,   R8A7743_CLK_R),
0092     DEF_MOD("tmu0",          125,   R8A7743_CLK_CP),
0093     DEF_MOD("vsp1du1",       127,   R8A7743_CLK_ZS),
0094     DEF_MOD("vsp1du0",       128,   R8A7743_CLK_ZS),
0095     DEF_MOD("vsps",          131,   R8A7743_CLK_ZS),
0096     DEF_MOD("scifa2",        202,   R8A7743_CLK_MP),
0097     DEF_MOD("scifa1",        203,   R8A7743_CLK_MP),
0098     DEF_MOD("scifa0",        204,   R8A7743_CLK_MP),
0099     DEF_MOD("msiof2",        205,   R8A7743_CLK_MP),
0100     DEF_MOD("scifb0",        206,   R8A7743_CLK_MP),
0101     DEF_MOD("scifb1",        207,   R8A7743_CLK_MP),
0102     DEF_MOD("msiof1",        208,   R8A7743_CLK_MP),
0103     DEF_MOD("scifb2",        216,   R8A7743_CLK_MP),
0104     DEF_MOD("sys-dmac1",         218,   R8A7743_CLK_ZS),
0105     DEF_MOD("sys-dmac0",         219,   R8A7743_CLK_ZS),
0106     DEF_MOD("tpu0",          304,   R8A7743_CLK_CP),
0107     DEF_MOD("sdhi3",         311,   R8A7743_CLK_SD3),
0108     DEF_MOD("sdhi2",         312,   R8A7743_CLK_SD2),
0109     DEF_MOD("sdhi0",         314,   R8A7743_CLK_SD0),
0110     DEF_MOD("mmcif0",        315,   R8A7743_CLK_MMC0),
0111     DEF_MOD("iic0",          318,   R8A7743_CLK_HP),
0112     DEF_MOD("pciec",         319,   R8A7743_CLK_MP),
0113     DEF_MOD("iic1",          323,   R8A7743_CLK_HP),
0114     DEF_MOD("usb3.0",        328,   R8A7743_CLK_MP),
0115     DEF_MOD("cmt1",          329,   R8A7743_CLK_R),
0116     DEF_MOD("usbhs-dmac0",       330,   R8A7743_CLK_HP),
0117     DEF_MOD("usbhs-dmac1",       331,   R8A7743_CLK_HP),
0118     DEF_MOD("rwdt",          402,   R8A7743_CLK_R),
0119     DEF_MOD("irqc",          407,   R8A7743_CLK_CP),
0120     DEF_MOD("intc-sys",      408,   R8A7743_CLK_ZS),
0121     DEF_MOD("audio-dmac1",       501,   R8A7743_CLK_HP),
0122     DEF_MOD("audio-dmac0",       502,   R8A7743_CLK_HP),
0123     DEF_MOD("thermal",       522,   CLK_EXTAL),
0124     DEF_MOD("pwm",           523,   R8A7743_CLK_P),
0125     DEF_MOD("usb-ehci",      703,   R8A7743_CLK_MP),
0126     DEF_MOD("usbhs",         704,   R8A7743_CLK_HP),
0127     DEF_MOD("hscif2",        713,   R8A7743_CLK_ZS),
0128     DEF_MOD("scif5",         714,   R8A7743_CLK_P),
0129     DEF_MOD("scif4",         715,   R8A7743_CLK_P),
0130     DEF_MOD("hscif1",        716,   R8A7743_CLK_ZS),
0131     DEF_MOD("hscif0",        717,   R8A7743_CLK_ZS),
0132     DEF_MOD("scif3",         718,   R8A7743_CLK_P),
0133     DEF_MOD("scif2",         719,   R8A7743_CLK_P),
0134     DEF_MOD("scif1",         720,   R8A7743_CLK_P),
0135     DEF_MOD("scif0",         721,   R8A7743_CLK_P),
0136     DEF_MOD("du1",           723,   R8A7743_CLK_ZX),
0137     DEF_MOD("du0",           724,   R8A7743_CLK_ZX),
0138     DEF_MOD("lvds0",         726,   R8A7743_CLK_ZX),
0139     DEF_MOD("ipmmu-sgx",         800,   R8A7743_CLK_ZX),
0140     DEF_MOD("vin2",          809,   R8A7743_CLK_ZG),
0141     DEF_MOD("vin1",          810,   R8A7743_CLK_ZG),
0142     DEF_MOD("vin0",          811,   R8A7743_CLK_ZG),
0143     DEF_MOD("etheravb",      812,   R8A7743_CLK_HP),
0144     DEF_MOD("ether",         813,   R8A7743_CLK_P),
0145     DEF_MOD("sata1",         814,   R8A7743_CLK_ZS),
0146     DEF_MOD("sata0",         815,   R8A7743_CLK_ZS),
0147     DEF_MOD("gpio7",         904,   R8A7743_CLK_CP),
0148     DEF_MOD("gpio6",         905,   R8A7743_CLK_CP),
0149     DEF_MOD("gpio5",         907,   R8A7743_CLK_CP),
0150     DEF_MOD("gpio4",         908,   R8A7743_CLK_CP),
0151     DEF_MOD("gpio3",         909,   R8A7743_CLK_CP),
0152     DEF_MOD("gpio2",         910,   R8A7743_CLK_CP),
0153     DEF_MOD("gpio1",         911,   R8A7743_CLK_CP),
0154     DEF_MOD("gpio0",         912,   R8A7743_CLK_CP),
0155     DEF_MOD("can1",          915,   R8A7743_CLK_P),
0156     DEF_MOD("can0",          916,   R8A7743_CLK_P),
0157     DEF_MOD("qspi_mod",      917,   R8A7743_CLK_QSPI),
0158     DEF_MOD("i2c5",          925,   R8A7743_CLK_HP),
0159     DEF_MOD("iicdvfs",       926,   R8A7743_CLK_CP),
0160     DEF_MOD("i2c4",          927,   R8A7743_CLK_HP),
0161     DEF_MOD("i2c3",          928,   R8A7743_CLK_HP),
0162     DEF_MOD("i2c2",          929,   R8A7743_CLK_HP),
0163     DEF_MOD("i2c1",          930,   R8A7743_CLK_HP),
0164     DEF_MOD("i2c0",          931,   R8A7743_CLK_HP),
0165     DEF_MOD("ssi-all",      1005,   R8A7743_CLK_P),
0166     DEF_MOD("ssi9",         1006,   MOD_CLK_ID(1005)),
0167     DEF_MOD("ssi8",         1007,   MOD_CLK_ID(1005)),
0168     DEF_MOD("ssi7",         1008,   MOD_CLK_ID(1005)),
0169     DEF_MOD("ssi6",         1009,   MOD_CLK_ID(1005)),
0170     DEF_MOD("ssi5",         1010,   MOD_CLK_ID(1005)),
0171     DEF_MOD("ssi4",         1011,   MOD_CLK_ID(1005)),
0172     DEF_MOD("ssi3",         1012,   MOD_CLK_ID(1005)),
0173     DEF_MOD("ssi2",         1013,   MOD_CLK_ID(1005)),
0174     DEF_MOD("ssi1",         1014,   MOD_CLK_ID(1005)),
0175     DEF_MOD("ssi0",         1015,   MOD_CLK_ID(1005)),
0176     DEF_MOD("scu-all",      1017,   R8A7743_CLK_P),
0177     DEF_MOD("scu-dvc1",     1018,   MOD_CLK_ID(1017)),
0178     DEF_MOD("scu-dvc0",     1019,   MOD_CLK_ID(1017)),
0179     DEF_MOD("scu-ctu1-mix1",    1020,   MOD_CLK_ID(1017)),
0180     DEF_MOD("scu-ctu0-mix0",    1021,   MOD_CLK_ID(1017)),
0181     DEF_MOD("scu-src9",     1022,   MOD_CLK_ID(1017)),
0182     DEF_MOD("scu-src8",     1023,   MOD_CLK_ID(1017)),
0183     DEF_MOD("scu-src7",     1024,   MOD_CLK_ID(1017)),
0184     DEF_MOD("scu-src6",     1025,   MOD_CLK_ID(1017)),
0185     DEF_MOD("scu-src5",     1026,   MOD_CLK_ID(1017)),
0186     DEF_MOD("scu-src4",     1027,   MOD_CLK_ID(1017)),
0187     DEF_MOD("scu-src3",     1028,   MOD_CLK_ID(1017)),
0188     DEF_MOD("scu-src2",     1029,   MOD_CLK_ID(1017)),
0189     DEF_MOD("scu-src1",     1030,   MOD_CLK_ID(1017)),
0190     DEF_MOD("scu-src0",     1031,   MOD_CLK_ID(1017)),
0191     DEF_MOD("scifa3",       1106,   R8A7743_CLK_MP),
0192     DEF_MOD("scifa4",       1107,   R8A7743_CLK_MP),
0193     DEF_MOD("scifa5",       1108,   R8A7743_CLK_MP),
0194 };
0195
0196 static const unsigned int r8a7743_crit_mod_clks[] __initconst = {
0197     MOD_CLK_ID(402),    /* RWDT */
0198     MOD_CLK_ID(408),    /* INTC-SYS (GIC) */
0199 };
0200
0201 /*
0202  * CPG Clock Data
0203  */
0204
0205 /*
0206  *    MD    EXTAL       PLL0    PLL1    PLL3
0207  * 14 13 19 (MHz)       *1  *1
0208  *---------------------------------------------------
0209  * 0  0  0  15      x172/2  x208/2  x106
0210  * 0  0  1  15      x172/2  x208/2  x88
0211  * 0  1  0  20      x130/2  x156/2  x80
0212  * 0  1  1  20      x130/2  x156/2  x66
0213  * 1  0  0  26 / 2      x200/2  x240/2  x122
0214  * 1  0  1  26 / 2      x200/2  x240/2  x102
0215  * 1  1  0  30 / 2      x172/2  x208/2  x106
0216  * 1  1  1  30 / 2      x172/2  x208/2  x88
0217  *
0218  * *1 : Table 7.5a indicates VCO output (PLLx = VCO/2)
0219  */
0220 #define CPG_PLL_CONFIG_INDEX(md)    ((((md) & BIT(14)) >> 12) | \
0221                      (((md) & BIT(13)) >> 12) | \
0222                      (((md) & BIT(19)) >> 19))
0223
0224 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
0225     /* EXTAL div    PLL1 mult   PLL3 mult */
0226     { 1,        208,        106,    },
0227     { 1,        208,        88, },
0228     { 1,        156,        80, },
0229     { 1,        156,        66, },
0230     { 2,        240,        122,    },
0231     { 2,        240,        102,    },
0232     { 2,        208,        106,    },
0233     { 2,        208,        88, },
0234 };
0235
0236 static int __init r8a7743_cpg_mssr_init(struct device *dev)
0237 {
0238     const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
0239     struct device_node *np = dev->of_node;
0240     unsigned int i;
0241     u32 cpg_mode;
0242     int error;
0243
0244     error = rcar_rst_read_mode_pins(&cpg_mode);
0245     if (error)
0246         return error;
0247
0248     cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
0249
0250     if (of_device_is_compatible(np, "renesas,r8a7744-cpg-mssr")) {
0251         /* RZ/G1N uses a 1/5 divider for ZG */
0252         for (i = 0; i < ARRAY_SIZE(r8a7743_core_clks); i++)
0253             if (r8a7743_core_clks[i].id == R8A7743_CLK_ZG) {
0254                 r8a7743_core_clks[i].div = 5;
0255                 break;
0256             }
0257     }
0258     return rcar_gen2_cpg_init(cpg_pll_config, 2, cpg_mode);
0259 }
0260
0261 const struct cpg_mssr_info r8a7743_cpg_mssr_info __initconst = {
0262     /* Core Clocks */
0263     .core_clks = r8a7743_core_clks,
0264     .num_core_clks = ARRAY_SIZE(r8a7743_core_clks),
0265     .last_dt_core_clk = LAST_DT_CORE_CLK,
0266     .num_total_core_clks = MOD_CLK_BASE,
0267
0268     /* Module Clocks */
0269     .mod_clks = r8a7743_mod_clks,
0270     .num_mod_clks = ARRAY_SIZE(r8a7743_mod_clks),
0271     .num_hw_mod_clks = 12 * 32,
0272
0273     /* Critical Module Clocks */
0274     .crit_mod_clks = r8a7743_crit_mod_clks,
0275     .num_crit_mod_clks = ARRAY_SIZE(r8a7743_crit_mod_clks),
0276
0277     /* Callbacks */
0278     .init = r8a7743_cpg_mssr_init,
0279     .cpg_clk_register = rcar_gen2_cpg_clk_register,
0280 };