linux/drivers/clk/rockchip/clk-rk3036.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright (c) 2014 MundoReader S.L.
   4 * Author: Heiko Stuebner <heiko@sntech.de>
   5 *
   6 * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
   7 * Author: Xing Zheng <zhengxing@rock-chips.com>
   8 */
   9
  10#include <linux/clk-provider.h>
  11#include <linux/io.h>
  12#include <linux/of.h>
  13#include <linux/of_address.h>
  14#include <linux/syscore_ops.h>
  15#include <dt-bindings/clock/rk3036-cru.h>
  16#include "clk.h"
  17
  18#define RK3036_GRF_SOC_STATUS0  0x14c
  19
  20enum rk3036_plls {
  21        apll, dpll, gpll,
  22};
  23
  24static struct rockchip_pll_rate_table rk3036_pll_rates[] = {
  25        /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
  26        RK3036_PLL_RATE(1608000000, 1, 67, 1, 1, 1, 0),
  27        RK3036_PLL_RATE(1584000000, 1, 66, 1, 1, 1, 0),
  28        RK3036_PLL_RATE(1560000000, 1, 65, 1, 1, 1, 0),
  29        RK3036_PLL_RATE(1536000000, 1, 64, 1, 1, 1, 0),
  30        RK3036_PLL_RATE(1512000000, 1, 63, 1, 1, 1, 0),
  31        RK3036_PLL_RATE(1488000000, 1, 62, 1, 1, 1, 0),
  32        RK3036_PLL_RATE(1464000000, 1, 61, 1, 1, 1, 0),
  33        RK3036_PLL_RATE(1440000000, 1, 60, 1, 1, 1, 0),
  34        RK3036_PLL_RATE(1416000000, 1, 59, 1, 1, 1, 0),
  35        RK3036_PLL_RATE(1392000000, 1, 58, 1, 1, 1, 0),
  36        RK3036_PLL_RATE(1368000000, 1, 57, 1, 1, 1, 0),
  37        RK3036_PLL_RATE(1344000000, 1, 56, 1, 1, 1, 0),
  38        RK3036_PLL_RATE(1320000000, 1, 55, 1, 1, 1, 0),
  39        RK3036_PLL_RATE(1296000000, 1, 54, 1, 1, 1, 0),
  40        RK3036_PLL_RATE(1272000000, 1, 53, 1, 1, 1, 0),
  41        RK3036_PLL_RATE(1248000000, 1, 52, 1, 1, 1, 0),
  42        RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0),
  43        RK3036_PLL_RATE(1188000000, 2, 99, 1, 1, 1, 0),
  44        RK3036_PLL_RATE(1104000000, 1, 46, 1, 1, 1, 0),
  45        RK3036_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0),
  46        RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0),
  47        RK3036_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0),
  48        RK3036_PLL_RATE( 984000000, 1, 82, 2, 1, 1, 0),
  49        RK3036_PLL_RATE( 960000000, 1, 80, 2, 1, 1, 0),
  50        RK3036_PLL_RATE( 936000000, 1, 78, 2, 1, 1, 0),
  51        RK3036_PLL_RATE( 912000000, 1, 76, 2, 1, 1, 0),
  52        RK3036_PLL_RATE( 900000000, 4, 300, 2, 1, 1, 0),
  53        RK3036_PLL_RATE( 888000000, 1, 74, 2, 1, 1, 0),
  54        RK3036_PLL_RATE( 864000000, 1, 72, 2, 1, 1, 0),
  55        RK3036_PLL_RATE( 840000000, 1, 70, 2, 1, 1, 0),
  56        RK3036_PLL_RATE( 816000000, 1, 68, 2, 1, 1, 0),
  57        RK3036_PLL_RATE( 800000000, 6, 400, 2, 1, 1, 0),
  58        RK3036_PLL_RATE( 700000000, 6, 350, 2, 1, 1, 0),
  59        RK3036_PLL_RATE( 696000000, 1, 58, 2, 1, 1, 0),
  60        RK3036_PLL_RATE( 600000000, 1, 75, 3, 1, 1, 0),
  61        RK3036_PLL_RATE( 594000000, 2, 99, 2, 1, 1, 0),
  62        RK3036_PLL_RATE( 504000000, 1, 63, 3, 1, 1, 0),
  63        RK3036_PLL_RATE( 500000000, 6, 250, 2, 1, 1, 0),
  64        RK3036_PLL_RATE( 408000000, 1, 68, 2, 2, 1, 0),
  65        RK3036_PLL_RATE( 312000000, 1, 52, 2, 2, 1, 0),
  66        RK3036_PLL_RATE( 216000000, 1, 72, 4, 2, 1, 0),
  67        RK3036_PLL_RATE(  96000000, 1, 64, 4, 4, 1, 0),
  68        { /* sentinel */ },
  69};
  70
  71#define RK3036_DIV_CPU_MASK             0x1f
  72#define RK3036_DIV_CPU_SHIFT            8
  73
  74#define RK3036_DIV_PERI_MASK            0xf
  75#define RK3036_DIV_PERI_SHIFT           0
  76#define RK3036_DIV_ACLK_MASK            0x7
  77#define RK3036_DIV_ACLK_SHIFT           4
  78#define RK3036_DIV_HCLK_MASK            0x3
  79#define RK3036_DIV_HCLK_SHIFT           8
  80#define RK3036_DIV_PCLK_MASK            0x7
  81#define RK3036_DIV_PCLK_SHIFT           12
  82
  83#define RK3036_CLKSEL1(_core_periph_div)                                        \
  84        {                                                                       \
  85                .reg = RK2928_CLKSEL_CON(1),                                    \
  86                .val = HIWORD_UPDATE(_core_periph_div, RK3036_DIV_PERI_MASK,    \
  87                                RK3036_DIV_PERI_SHIFT)                          \
  88        }
  89
  90#define RK3036_CPUCLK_RATE(_prate, _core_periph_div)                    \
  91        {                                                               \
  92                .prate = _prate,                                        \
  93                .divs = {                                               \
  94                        RK3036_CLKSEL1(_core_periph_div),               \
  95                },                                                      \
  96        }
  97
  98static struct rockchip_cpuclk_rate_table rk3036_cpuclk_rates[] __initdata = {
  99        RK3036_CPUCLK_RATE(816000000, 4),
 100        RK3036_CPUCLK_RATE(600000000, 4),
 101        RK3036_CPUCLK_RATE(312000000, 4),
 102};
 103
 104static const struct rockchip_cpuclk_reg_data rk3036_cpuclk_data = {
 105        .core_reg[0] = RK2928_CLKSEL_CON(0),
 106        .div_core_shift[0] = 0,
 107        .div_core_mask[0] = 0x1f,
 108        .num_cores = 1,
 109        .mux_core_alt = 1,
 110        .mux_core_main = 0,
 111        .mux_core_shift = 7,
 112        .mux_core_mask = 0x1,
 113};
 114
 115PNAME(mux_pll_p)                = { "xin24m", "xin24m" };
 116
 117PNAME(mux_armclk_p)             = { "apll", "gpll_armclk" };
 118PNAME(mux_busclk_p)             = { "apll", "dpll_cpu", "gpll_cpu" };
 119PNAME(mux_ddrphy_p)             = { "dpll_ddr", "gpll_ddr" };
 120PNAME(mux_pll_src_3plls_p)      = { "apll", "dpll", "gpll" };
 121PNAME(mux_timer_p)              = { "xin24m", "pclk_peri_src" };
 122
 123PNAME(mux_pll_src_apll_dpll_gpll_usb480m_p)     = { "apll", "dpll", "gpll", "usb480m" };
 124
 125PNAME(mux_mmc_src_p)    = { "apll", "dpll", "gpll", "xin24m" };
 126PNAME(mux_i2s_pre_p)    = { "i2s_src", "i2s_frac", "ext_i2s", "xin12m" };
 127PNAME(mux_i2s_clkout_p) = { "i2s_pre", "xin12m" };
 128PNAME(mux_spdif_p)      = { "spdif_src", "spdif_frac", "xin12m" };
 129PNAME(mux_uart0_p)      = { "uart0_src", "uart0_frac", "xin24m" };
 130PNAME(mux_uart1_p)      = { "uart1_src", "uart1_frac", "xin24m" };
 131PNAME(mux_uart2_p)      = { "uart2_src", "uart2_frac", "xin24m" };
 132PNAME(mux_mac_p)        = { "mac_pll_src", "rmii_clkin" };
 133PNAME(mux_dclk_p)       = { "dclk_lcdc", "dclk_cru" };
 134
 135static struct rockchip_pll_clock rk3036_pll_clks[] __initdata = {
 136        [apll] = PLL(pll_rk3036, PLL_APLL, "apll", mux_pll_p, 0, RK2928_PLL_CON(0),
 137                     RK2928_MODE_CON, 0, 5, 0, rk3036_pll_rates),
 138        [dpll] = PLL(pll_rk3036, PLL_DPLL, "dpll", mux_pll_p, 0, RK2928_PLL_CON(4),
 139                     RK2928_MODE_CON, 4, 4, 0, NULL),
 140        [gpll] = PLL(pll_rk3036, PLL_GPLL, "gpll", mux_pll_p, 0, RK2928_PLL_CON(12),
 141                     RK2928_MODE_CON, 12, 6, ROCKCHIP_PLL_SYNC_RATE, rk3036_pll_rates),
 142};
 143
 144#define MFLAGS CLK_MUX_HIWORD_MASK
 145#define DFLAGS CLK_DIVIDER_HIWORD_MASK
 146#define GFLAGS (CLK_GATE_HIWORD_MASK | CLK_GATE_SET_TO_DISABLE)
 147
 148static struct rockchip_clk_branch rk3036_uart0_fracmux __initdata =
 149        MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
 150                        RK2928_CLKSEL_CON(13), 8, 2, MFLAGS);
 151
 152static struct rockchip_clk_branch rk3036_uart1_fracmux __initdata =
 153        MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
 154                        RK2928_CLKSEL_CON(14), 8, 2, MFLAGS);
 155
 156static struct rockchip_clk_branch rk3036_uart2_fracmux __initdata =
 157        MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
 158                        RK2928_CLKSEL_CON(15), 8, 2, MFLAGS);
 159
 160static struct rockchip_clk_branch rk3036_i2s_fracmux __initdata =
 161        MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
 162                        RK2928_CLKSEL_CON(3), 8, 2, MFLAGS);
 163
 164static struct rockchip_clk_branch rk3036_spdif_fracmux __initdata =
 165        MUX(SCLK_SPDIF, "sclk_spdif", mux_spdif_p, 0,
 166                        RK2928_CLKSEL_CON(5), 8, 2, MFLAGS);
 167
 168static struct rockchip_clk_branch rk3036_clk_branches[] __initdata = {
 169        /*
 170         * Clock-Architecture Diagram 1
 171         */
 172
 173        GATE(0, "gpll_armclk", "gpll", CLK_IGNORE_UNUSED,
 174                        RK2928_CLKGATE_CON(0), 6, GFLAGS),
 175
 176        FACTOR(0, "xin12m", "xin24m", 0, 1, 2),
 177
 178        /*
 179         * Clock-Architecture Diagram 2
 180         */
 181
 182        GATE(0, "dpll_ddr", "dpll", CLK_IGNORE_UNUSED,
 183                        RK2928_CLKGATE_CON(0), 2, GFLAGS),
 184        GATE(0, "gpll_ddr", "gpll", CLK_IGNORE_UNUSED,
 185                        RK2928_CLKGATE_CON(0), 8, GFLAGS),
 186        COMPOSITE_NOGATE(0, "ddrphy2x", mux_ddrphy_p, CLK_IGNORE_UNUSED,
 187                        RK2928_CLKSEL_CON(26), 8, 1, MFLAGS, 0, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
 188        FACTOR(0, "ddrphy", "ddrphy2x", 0, 1, 2),
 189
 190        COMPOSITE_NOMUX(0, "pclk_dbg", "armclk", CLK_IGNORE_UNUSED,
 191                        RK2928_CLKSEL_CON(1), 0, 4, DFLAGS | CLK_DIVIDER_READ_ONLY,
 192                        RK2928_CLKGATE_CON(0), 7, GFLAGS),
 193        COMPOSITE_NOMUX(0, "aclk_core_pre", "armclk", CLK_IGNORE_UNUSED,
 194                        RK2928_CLKSEL_CON(1), 4, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
 195                        RK2928_CLKGATE_CON(0), 7, GFLAGS),
 196
 197        GATE(0, "dpll_cpu", "dpll", 0, RK2928_CLKGATE_CON(10), 8, GFLAGS),
 198        GATE(0, "gpll_cpu", "gpll", 0, RK2928_CLKGATE_CON(0), 1, GFLAGS),
 199        COMPOSITE_NOGATE(0, "aclk_cpu_src", mux_busclk_p, 0,
 200                        RK2928_CLKSEL_CON(0), 14, 2, MFLAGS, 8, 5, DFLAGS),
 201        GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
 202                        RK2928_CLKGATE_CON(0), 3, GFLAGS),
 203        COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
 204                        RK2928_CLKSEL_CON(1), 12, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
 205                        RK2928_CLKGATE_CON(0), 5, GFLAGS),
 206        COMPOSITE_NOMUX(HCLK_CPU, "hclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
 207                        RK2928_CLKSEL_CON(1), 8, 2, DFLAGS | CLK_DIVIDER_READ_ONLY,
 208                        RK2928_CLKGATE_CON(0), 4, GFLAGS),
 209
 210        COMPOSITE(0, "aclk_peri_src", mux_pll_src_3plls_p, 0,
 211                        RK2928_CLKSEL_CON(10), 14, 2, MFLAGS, 0, 5, DFLAGS,
 212                        RK2928_CLKGATE_CON(2), 0, GFLAGS),
 213
 214        GATE(ACLK_PERI, "aclk_peri", "aclk_peri_src", 0,
 215                        RK2928_CLKGATE_CON(2), 1, GFLAGS),
 216        DIV(0, "pclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
 217                        RK2928_CLKSEL_CON(10), 12, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
 218        GATE(PCLK_PERI, "pclk_peri", "pclk_peri_src", 0,
 219                        RK2928_CLKGATE_CON(2), 3, GFLAGS),
 220        DIV(0, "hclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
 221                        RK2928_CLKSEL_CON(10), 8, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
 222        GATE(HCLK_PERI, "hclk_peri", "hclk_peri_src", 0,
 223                        RK2928_CLKGATE_CON(2), 2, GFLAGS),
 224
 225        COMPOSITE_NODIV(SCLK_TIMER0, "sclk_timer0", mux_timer_p, CLK_IGNORE_UNUSED,
 226                        RK2928_CLKSEL_CON(2), 4, 1, MFLAGS,
 227                        RK2928_CLKGATE_CON(1), 0, GFLAGS),
 228        COMPOSITE_NODIV(SCLK_TIMER1, "sclk_timer1", mux_timer_p, CLK_IGNORE_UNUSED,
 229                        RK2928_CLKSEL_CON(2), 5, 1, MFLAGS,
 230                        RK2928_CLKGATE_CON(1), 1, GFLAGS),
 231        COMPOSITE_NODIV(SCLK_TIMER2, "sclk_timer2", mux_timer_p, CLK_IGNORE_UNUSED,
 232                        RK2928_CLKSEL_CON(2), 6, 1, MFLAGS,
 233                        RK2928_CLKGATE_CON(2), 4, GFLAGS),
 234        COMPOSITE_NODIV(SCLK_TIMER3, "sclk_timer3", mux_timer_p, CLK_IGNORE_UNUSED,
 235                        RK2928_CLKSEL_CON(2), 7, 1, MFLAGS,
 236                        RK2928_CLKGATE_CON(2), 5, GFLAGS),
 237
 238        MUX(0, "uart_pll_clk", mux_pll_src_apll_dpll_gpll_usb480m_p, 0,
 239                        RK2928_CLKSEL_CON(13), 10, 2, MFLAGS),
 240        COMPOSITE_NOMUX(0, "uart0_src", "uart_pll_clk", 0,
 241                        RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
 242                        RK2928_CLKGATE_CON(1), 8, GFLAGS),
 243        COMPOSITE_NOMUX(0, "uart1_src", "uart_pll_clk", 0,
 244                        RK2928_CLKSEL_CON(14), 0, 7, DFLAGS,
 245                        RK2928_CLKGATE_CON(1), 10, GFLAGS),
 246        COMPOSITE_NOMUX(0, "uart2_src", "uart_pll_clk", 0,
 247                        RK2928_CLKSEL_CON(15), 0, 7, DFLAGS,
 248                        RK2928_CLKGATE_CON(1), 12, GFLAGS),
 249        COMPOSITE_FRACMUX(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
 250                        RK2928_CLKSEL_CON(17), 0,
 251                        RK2928_CLKGATE_CON(1), 9, GFLAGS,
 252                        &rk3036_uart0_fracmux),
 253        COMPOSITE_FRACMUX(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
 254                        RK2928_CLKSEL_CON(18), 0,
 255                        RK2928_CLKGATE_CON(1), 11, GFLAGS,
 256                        &rk3036_uart1_fracmux),
 257        COMPOSITE_FRACMUX(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
 258                        RK2928_CLKSEL_CON(19), 0,
 259                        RK2928_CLKGATE_CON(1), 13, GFLAGS,
 260                        &rk3036_uart2_fracmux),
 261
 262        COMPOSITE(ACLK_VCODEC, "aclk_vcodec", mux_pll_src_3plls_p, 0,
 263                        RK2928_CLKSEL_CON(32), 14, 2, MFLAGS, 8, 5, DFLAGS,
 264                        RK2928_CLKGATE_CON(3), 11, GFLAGS),
 265        FACTOR_GATE(HCLK_VCODEC, "hclk_vcodec", "aclk_vcodec", 0, 1, 4,
 266                        RK2928_CLKGATE_CON(3), 12, GFLAGS),
 267
 268        COMPOSITE(0, "aclk_hvec", mux_pll_src_3plls_p, 0,
 269                        RK2928_CLKSEL_CON(20), 0, 2, MFLAGS, 2, 5, DFLAGS,
 270                        RK2928_CLKGATE_CON(10), 6, GFLAGS),
 271
 272        COMPOSITE(0, "aclk_disp1_pre", mux_pll_src_3plls_p, 0,
 273                        RK2928_CLKSEL_CON(31), 14, 2, MFLAGS, 8, 5, DFLAGS,
 274                        RK2928_CLKGATE_CON(1), 4, GFLAGS),
 275        COMPOSITE(0, "hclk_disp_pre", mux_pll_src_3plls_p, 0,
 276                        RK2928_CLKSEL_CON(30), 14, 2, MFLAGS, 8, 5, DFLAGS,
 277                        RK2928_CLKGATE_CON(0), 11, GFLAGS),
 278        COMPOSITE(SCLK_LCDC, "dclk_lcdc", mux_pll_src_3plls_p, 0,
 279                        RK2928_CLKSEL_CON(28), 0, 2, MFLAGS, 8, 8, DFLAGS,
 280                        RK2928_CLKGATE_CON(3), 2, GFLAGS),
 281
 282        COMPOSITE_NODIV(0, "sclk_sdmmc_src", mux_mmc_src_p, 0,
 283                        RK2928_CLKSEL_CON(12), 8, 2, MFLAGS,
 284                        RK2928_CLKGATE_CON(2), 11, GFLAGS),
 285        DIV(SCLK_SDMMC, "sclk_sdmmc", "sclk_sdmmc_src", 0,
 286                        RK2928_CLKSEL_CON(11), 0, 7, DFLAGS),
 287
 288        COMPOSITE_NODIV(0, "sclk_sdio_src", mux_mmc_src_p, 0,
 289                        RK2928_CLKSEL_CON(12), 10, 2, MFLAGS,
 290                        RK2928_CLKGATE_CON(2), 13, GFLAGS),
 291        DIV(SCLK_SDIO, "sclk_sdio", "sclk_sdio_src", 0,
 292                        RK2928_CLKSEL_CON(11), 8, 7, DFLAGS),
 293
 294        COMPOSITE(SCLK_EMMC, "sclk_emmc", mux_mmc_src_p, 0,
 295                        RK2928_CLKSEL_CON(12), 12, 2, MFLAGS, 0, 7, DFLAGS,
 296                        RK2928_CLKGATE_CON(2), 14, GFLAGS),
 297
 298        MMC(SCLK_SDMMC_DRV,    "sdmmc_drv",    "sclk_sdmmc", RK3036_SDMMC_CON0, 1),
 299        MMC(SCLK_SDMMC_SAMPLE, "sdmmc_sample", "sclk_sdmmc", RK3036_SDMMC_CON1, 0),
 300
 301        MMC(SCLK_SDIO_DRV,     "sdio_drv",     "sclk_sdio",  RK3036_SDIO_CON0, 1),
 302        MMC(SCLK_SDIO_SAMPLE,  "sdio_sample",  "sclk_sdio",  RK3036_SDIO_CON1, 0),
 303
 304        MMC(SCLK_EMMC_DRV,     "emmc_drv",     "sclk_emmc",  RK3036_EMMC_CON0,  1),
 305        MMC(SCLK_EMMC_SAMPLE,  "emmc_sample",  "sclk_emmc",  RK3036_EMMC_CON1,  0),
 306
 307        COMPOSITE(0, "i2s_src", mux_pll_src_3plls_p, 0,
 308                        RK2928_CLKSEL_CON(3), 14, 2, MFLAGS, 0, 7, DFLAGS,
 309                        RK2928_CLKGATE_CON(0), 9, GFLAGS),
 310        COMPOSITE_FRACMUX(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
 311                        RK2928_CLKSEL_CON(7), 0,
 312                        RK2928_CLKGATE_CON(0), 10, GFLAGS,
 313                        &rk3036_i2s_fracmux),
 314        COMPOSITE_NODIV(SCLK_I2S_OUT, "i2s_clkout", mux_i2s_clkout_p, 0,
 315                        RK2928_CLKSEL_CON(3), 12, 1, MFLAGS,
 316                        RK2928_CLKGATE_CON(0), 13, GFLAGS),
 317        GATE(SCLK_I2S, "sclk_i2s", "i2s_pre", CLK_SET_RATE_PARENT,
 318                        RK2928_CLKGATE_CON(0), 14, GFLAGS),
 319
 320        COMPOSITE(0, "spdif_src", mux_pll_src_3plls_p, 0,
 321                        RK2928_CLKSEL_CON(5), 10, 2, MFLAGS, 0, 7, DFLAGS,
 322                        RK2928_CLKGATE_CON(2), 10, GFLAGS),
 323        COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", 0,
 324                        RK2928_CLKSEL_CON(9), 0,
 325                        RK2928_CLKGATE_CON(2), 12, GFLAGS,
 326                        &rk3036_spdif_fracmux),
 327
 328        GATE(SCLK_OTGPHY0, "sclk_otgphy0", "xin12m", CLK_IGNORE_UNUSED,
 329                        RK2928_CLKGATE_CON(1), 5, GFLAGS),
 330
 331        COMPOSITE(SCLK_GPU, "sclk_gpu", mux_pll_src_3plls_p, 0,
 332                        RK2928_CLKSEL_CON(34), 8, 2, MFLAGS, 0, 5, DFLAGS,
 333                        RK2928_CLKGATE_CON(3), 13, GFLAGS),
 334
 335        COMPOSITE(SCLK_SPI, "sclk_spi", mux_pll_src_3plls_p, 0,
 336                        RK2928_CLKSEL_CON(25), 8, 2, MFLAGS, 0, 7, DFLAGS,
 337                        RK2928_CLKGATE_CON(2), 9, GFLAGS),
 338
 339        COMPOSITE(SCLK_NANDC, "sclk_nandc", mux_pll_src_3plls_p, 0,
 340                        RK2928_CLKSEL_CON(16), 8, 2, MFLAGS, 10, 5, DFLAGS,
 341                        RK2928_CLKGATE_CON(10), 4, GFLAGS),
 342
 343        COMPOSITE(SCLK_SFC, "sclk_sfc", mux_pll_src_apll_dpll_gpll_usb480m_p, 0,
 344                        RK2928_CLKSEL_CON(16), 0, 2, MFLAGS, 2, 5, DFLAGS,
 345                        RK2928_CLKGATE_CON(10), 5, GFLAGS),
 346
 347        COMPOSITE_NOGATE(SCLK_MACPLL, "mac_pll_src", mux_pll_src_3plls_p, CLK_SET_RATE_NO_REPARENT,
 348                        RK2928_CLKSEL_CON(21), 0, 2, MFLAGS, 9, 5, DFLAGS),
 349        MUX(SCLK_MACREF, "mac_clk_ref", mux_mac_p, CLK_SET_RATE_PARENT,
 350                        RK2928_CLKSEL_CON(21), 3, 1, MFLAGS),
 351
 352        COMPOSITE_NOMUX(SCLK_MAC, "mac_clk", "mac_clk_ref", 0,
 353                        RK2928_CLKSEL_CON(21), 4, 5, DFLAGS,
 354                        RK2928_CLKGATE_CON(2), 6, GFLAGS),
 355        FACTOR(0, "sclk_macref_out", "hclk_peri_src", 0, 1, 2),
 356
 357        MUX(SCLK_HDMI, "dclk_hdmi", mux_dclk_p, 0,
 358                        RK2928_CLKSEL_CON(31), 0, 1, MFLAGS),
 359
 360        /*
 361         * Clock-Architecture Diagram 3
 362         */
 363
 364        /* aclk_cpu gates */
 365        GATE(0, "sclk_intmem", "aclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 12, GFLAGS),
 366        GATE(0, "aclk_strc_sys", "aclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 10, GFLAGS),
 367
 368        /* hclk_cpu gates */
 369        GATE(HCLK_ROM, "hclk_rom", "hclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 6, GFLAGS),
 370
 371        /* pclk_cpu gates */
 372        GATE(PCLK_GRF, "pclk_grf", "pclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 4, GFLAGS),
 373        GATE(PCLK_DDRUPCTL, "pclk_ddrupctl", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 7, GFLAGS),
 374        GATE(PCLK_ACODEC, "pclk_acodec", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 14, GFLAGS),
 375        GATE(PCLK_HDMI, "pclk_hdmi", "pclk_cpu", 0, RK2928_CLKGATE_CON(3), 8, GFLAGS),
 376
 377        /* aclk_vio gates */
 378        GATE(ACLK_VIO, "aclk_vio", "aclk_disp1_pre", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(6), 13, GFLAGS),
 379        GATE(ACLK_LCDC, "aclk_lcdc", "aclk_disp1_pre", 0, RK2928_CLKGATE_CON(9), 6, GFLAGS),
 380
 381        GATE(HCLK_VIO_BUS, "hclk_vio_bus", "hclk_disp_pre", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(6), 12, GFLAGS),
 382        GATE(HCLK_LCDC, "hclk_lcdc", "hclk_disp_pre", 0, RK2928_CLKGATE_CON(9), 5, GFLAGS),
 383
 384
 385        /* xin24m gates */
 386        GATE(SCLK_PVTM_CORE, "sclk_pvtm_core", "xin24m", 0, RK2928_CLKGATE_CON(10), 0, GFLAGS),
 387        GATE(SCLK_PVTM_GPU, "sclk_pvtm_gpu", "xin24m", 0, RK2928_CLKGATE_CON(10), 1, GFLAGS),
 388
 389        /* aclk_peri gates */
 390        GATE(0, "aclk_peri_axi_matrix", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 3, GFLAGS),
 391        GATE(0, "aclk_cpu_peri", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 2, GFLAGS),
 392        GATE(ACLK_DMAC2, "aclk_dmac2", "aclk_peri", 0, RK2928_CLKGATE_CON(5), 1, GFLAGS),
 393        GATE(0, "aclk_peri_niu", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 15, GFLAGS),
 394
 395        /* hclk_peri gates */
 396        GATE(0, "hclk_peri_matrix", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 0, GFLAGS),
 397        GATE(0, "hclk_usb_peri", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 13, GFLAGS),
 398        GATE(0, "hclk_peri_arbi", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 14, GFLAGS),
 399        GATE(HCLK_NANDC, "hclk_nandc", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 9, GFLAGS),
 400        GATE(HCLK_SDMMC, "hclk_sdmmc", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 10, GFLAGS),
 401        GATE(HCLK_SDIO, "hclk_sdio", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 11, GFLAGS),
 402        GATE(HCLK_EMMC, "hclk_emmc", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 0, GFLAGS),
 403        GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 13, GFLAGS),
 404        GATE(HCLK_OTG1, "hclk_otg1", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(7), 3, GFLAGS),
 405        GATE(HCLK_I2S, "hclk_i2s", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 2, GFLAGS),
 406        GATE(0, "hclk_sfc", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 14, GFLAGS),
 407        GATE(HCLK_MAC, "hclk_mac", "hclk_peri", 0, RK2928_CLKGATE_CON(3), 5, GFLAGS),
 408
 409        /* pclk_peri gates */
 410        GATE(0, "pclk_peri_matrix", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 1, GFLAGS),
 411        GATE(0, "pclk_efuse", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 2, GFLAGS),
 412        GATE(PCLK_TIMER, "pclk_timer", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 7, GFLAGS),
 413        GATE(PCLK_PWM, "pclk_pwm", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 10, GFLAGS),
 414        GATE(PCLK_SPI, "pclk_spi", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 12, GFLAGS),
 415        GATE(PCLK_WDT, "pclk_wdt", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 15, GFLAGS),
 416        GATE(PCLK_UART0, "pclk_uart0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 0, GFLAGS),
 417        GATE(PCLK_UART1, "pclk_uart1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 1, GFLAGS),
 418        GATE(PCLK_UART2, "pclk_uart2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 2, GFLAGS),
 419        GATE(PCLK_I2C0, "pclk_i2c0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 4, GFLAGS),
 420        GATE(PCLK_I2C1, "pclk_i2c1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 5, GFLAGS),
 421        GATE(PCLK_I2C2, "pclk_i2c2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 6, GFLAGS),
 422        GATE(PCLK_GPIO0, "pclk_gpio0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 9, GFLAGS),
 423        GATE(PCLK_GPIO1, "pclk_gpio1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 10, GFLAGS),
 424        GATE(PCLK_GPIO2, "pclk_gpio2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 11, GFLAGS),
 425};
 426
 427static const char *const rk3036_critical_clocks[] __initconst = {
 428        "aclk_cpu",
 429        "aclk_peri",
 430        "hclk_peri",
 431        "pclk_peri",
 432        "pclk_ddrupctl",
 433};
 434
 435static void __init rk3036_clk_init(struct device_node *np)
 436{
 437        struct rockchip_clk_provider *ctx;
 438        void __iomem *reg_base;
 439        struct clk *clk;
 440
 441        reg_base = of_iomap(np, 0);
 442        if (!reg_base) {
 443                pr_err("%s: could not map cru region\n", __func__);
 444                return;
 445        }
 446
 447        /*
 448         * Make uart_pll_clk a child of the gpll, as all other sources are
 449         * not that usable / stable.
 450         */
 451        writel_relaxed(HIWORD_UPDATE(0x2, 0x3, 10),
 452                       reg_base + RK2928_CLKSEL_CON(13));
 453
 454        ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
 455        if (IS_ERR(ctx)) {
 456                pr_err("%s: rockchip clk init failed\n", __func__);
 457                iounmap(reg_base);
 458                return;
 459        }
 460
 461        clk = clk_register_fixed_factor(NULL, "usb480m", "xin24m", 0, 20, 1);
 462        if (IS_ERR(clk))
 463                pr_warn("%s: could not register clock usb480m: %ld\n",
 464                        __func__, PTR_ERR(clk));
 465
 466        rockchip_clk_register_plls(ctx, rk3036_pll_clks,
 467                                   ARRAY_SIZE(rk3036_pll_clks),
 468                                   RK3036_GRF_SOC_STATUS0);
 469        rockchip_clk_register_branches(ctx, rk3036_clk_branches,
 470                                  ARRAY_SIZE(rk3036_clk_branches));
 471        rockchip_clk_protect_critical(rk3036_critical_clocks,
 472                                      ARRAY_SIZE(rk3036_critical_clocks));
 473
 474        rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
 475                        mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
 476                        &rk3036_cpuclk_data, rk3036_cpuclk_rates,
 477                        ARRAY_SIZE(rk3036_cpuclk_rates));
 478
 479        rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
 480                                  ROCKCHIP_SOFTRST_HIWORD_MASK);
 481
 482        rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL);
 483
 484        rockchip_clk_of_add_provider(np, ctx);
 485}
 486CLK_OF_DECLARE(rk3036_cru, "rockchip,rk3036-cru", rk3036_clk_init);
 487