drivers/clk/at91/sama5d2.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/clk-provider.h>
   3 #include <linux/mfd/syscon.h>
   4 #include <linux/slab.h>
   5
   6 #include <dt-bindings/clock/at91.h>
   7
   8 #include "pmc.h"
   9
  10 static const struct clk_master_characteristics mck_characteristics = {
  11         .output = { .min = 124000000, .max = 166000000 },
  12         .divisors = { 1, 2, 4, 3 },
  13 };
  14
  15 static u8 plla_out[] = { 0 };
  16
  17 static u16 plla_icpll[] = { 0 };
  18
  19 static struct clk_range plla_outputs[] = {
  20         { .min = 600000000, .max = 1200000000 },
  21 };
  22
  23 static const struct clk_pll_characteristics plla_characteristics = {
  24         .input = { .min = 12000000, .max = 12000000 },
  25         .num_output = ARRAY_SIZE(plla_outputs),
  26         .output = plla_outputs,
  27         .icpll = plla_icpll,
  28         .out = plla_out,
  29 };
  30
  31 static const struct {
  32         char *n;
  33         char *p;
  34         u8 id;
  35 } sama5d2_systemck[] = {
  36         { .n = "ddrck", .p = "masterck", .id = 2 },
  37         { .n = "lcdck", .p = "masterck", .id = 3 },
  38         { .n = "uhpck", .p = "usbck",    .id = 6 },
  39         { .n = "udpck", .p = "usbck",    .id = 7 },
  40         { .n = "pck0",  .p = "prog0",    .id = 8 },
  41         { .n = "pck1",  .p = "prog1",    .id = 9 },
  42         { .n = "pck2",  .p = "prog2",    .id = 10 },
  43         { .n = "iscck", .p = "masterck", .id = 18 },
  44 };
  45
  46 static const struct {
  47         char *n;
  48         u8 id;
  49         struct clk_range r;
  50 } sama5d2_periph32ck[] = {
  51         { .n = "macb0_clk",   .id = 5,  .r = { .min = 0, .max = 83000000 }, },
  52         { .n = "tdes_clk",    .id = 11, .r = { .min = 0, .max = 83000000 }, },
  53         { .n = "matrix1_clk", .id = 14, },
  54         { .n = "hsmc_clk",    .id = 17, },
  55         { .n = "pioA_clk",    .id = 18, .r = { .min = 0, .max = 83000000 }, },
  56         { .n = "flx0_clk",    .id = 19, .r = { .min = 0, .max = 83000000 }, },
  57         { .n = "flx1_clk",    .id = 20, .r = { .min = 0, .max = 83000000 }, },
  58         { .n = "flx2_clk",    .id = 21, .r = { .min = 0, .max = 83000000 }, },
  59         { .n = "flx3_clk",    .id = 22, .r = { .min = 0, .max = 83000000 }, },
  60         { .n = "flx4_clk",    .id = 23, .r = { .min = 0, .max = 83000000 }, },
  61         { .n = "uart0_clk",   .id = 24, .r = { .min = 0, .max = 83000000 }, },
  62         { .n = "uart1_clk",   .id = 25, .r = { .min = 0, .max = 83000000 }, },
  63         { .n = "uart2_clk",   .id = 26, .r = { .min = 0, .max = 83000000 }, },
  64         { .n = "uart3_clk",   .id = 27, .r = { .min = 0, .max = 83000000 }, },
  65         { .n = "uart4_clk",   .id = 28, .r = { .min = 0, .max = 83000000 }, },
  66         { .n = "twi0_clk",    .id = 29, .r = { .min = 0, .max = 83000000 }, },
  67         { .n = "twi1_clk",    .id = 30, .r = { .min = 0, .max = 83000000 }, },
  68         { .n = "spi0_clk",    .id = 33, .r = { .min = 0, .max = 83000000 }, },
  69         { .n = "spi1_clk",    .id = 34, .r = { .min = 0, .max = 83000000 }, },
  70         { .n = "tcb0_clk",    .id = 35, .r = { .min = 0, .max = 83000000 }, },
  71         { .n = "tcb1_clk",    .id = 36, .r = { .min = 0, .max = 83000000 }, },
  72         { .n = "pwm_clk",     .id = 38, .r = { .min = 0, .max = 83000000 }, },
  73         { .n = "adc_clk",     .id = 40, .r = { .min = 0, .max = 83000000 }, },
  74         { .n = "uhphs_clk",   .id = 41, .r = { .min = 0, .max = 83000000 }, },
  75         { .n = "udphs_clk",   .id = 42, .r = { .min = 0, .max = 83000000 }, },
  76         { .n = "ssc0_clk",    .id = 43, .r = { .min = 0, .max = 83000000 }, },
  77         { .n = "ssc1_clk",    .id = 44, .r = { .min = 0, .max = 83000000 }, },
  78         { .n = "trng_clk",    .id = 47, .r = { .min = 0, .max = 83000000 }, },
  79         { .n = "pdmic_clk",   .id = 48, .r = { .min = 0, .max = 83000000 }, },
  80         { .n = "securam_clk", .id = 51, },
  81         { .n = "i2s0_clk",    .id = 54, .r = { .min = 0, .max = 83000000 }, },
  82         { .n = "i2s1_clk",    .id = 55, .r = { .min = 0, .max = 83000000 }, },
  83         { .n = "can0_clk",    .id = 56, .r = { .min = 0, .max = 83000000 }, },
  84         { .n = "can1_clk",    .id = 57, .r = { .min = 0, .max = 83000000 }, },
  85         { .n = "classd_clk",  .id = 59, .r = { .min = 0, .max = 83000000 }, },
  86 };
  87
  88 static const struct {
  89         char *n;
  90         u8 id;
  91 } sama5d2_periphck[] = {
  92         { .n = "dma0_clk",    .id = 6, },
  93         { .n = "dma1_clk",    .id = 7, },
  94         { .n = "aes_clk",     .id = 9, },
  95         { .n = "aesb_clk",    .id = 10, },
  96         { .n = "sha_clk",     .id = 12, },
  97         { .n = "mpddr_clk",   .id = 13, },
  98         { .n = "matrix0_clk", .id = 15, },
  99         { .n = "sdmmc0_hclk", .id = 31, },
 100         { .n = "sdmmc1_hclk", .id = 32, },
 101         { .n = "lcdc_clk",    .id = 45, },
 102         { .n = "isc_clk",     .id = 46, },
 103         { .n = "qspi0_clk",   .id = 52, },
 104         { .n = "qspi1_clk",   .id = 53, },
 105 };
 106
 107 static const struct {
 108         char *n;
 109         u8 id;
 110         struct clk_range r;
 111         bool pll;
 112 } sama5d2_gck[] = {
 113         { .n = "sdmmc0_gclk", .id = 31, },
 114         { .n = "sdmmc1_gclk", .id = 32, },
 115         { .n = "tcb0_gclk",   .id = 35, .r = { .min = 0, .max = 83000000 }, },
 116         { .n = "tcb1_gclk",   .id = 36, .r = { .min = 0, .max = 83000000 }, },
 117         { .n = "pwm_gclk",    .id = 38, .r = { .min = 0, .max = 83000000 }, },
 118         { .n = "isc_gclk",    .id = 46, },
 119         { .n = "pdmic_gclk",  .id = 48, },
 120         { .n = "i2s0_gclk",   .id = 54, .pll = true },
 121         { .n = "i2s1_gclk",   .id = 55, .pll = true },
 122         { .n = "can0_gclk",   .id = 56, .r = { .min = 0, .max = 80000000 }, },
 123         { .n = "can1_gclk",   .id = 57, .r = { .min = 0, .max = 80000000 }, },
 124         { .n = "classd_gclk", .id = 59, .r = { .min = 0, .max = 100000000 },
 125           .pll = true },
 126 };
 127
 128 static void __init sama5d2_pmc_setup(struct device_node *np)
 129 {
 130         struct clk_range range = CLK_RANGE(0, 0);
 131         const char *slck_name, *mainxtal_name;
 132         struct pmc_data *sama5d2_pmc;
 133         const char *parent_names[6];
 134         struct regmap *regmap, *regmap_sfr;
 135         struct clk_hw *hw;
 136         int i;
 137         bool bypass;
 138
 139         i = of_property_match_string(np, "clock-names", "slow_clk");
 140         if (i < 0)
 141                 return;
 142
 143         slck_name = of_clk_get_parent_name(np, i);
 144
 145         i = of_property_match_string(np, "clock-names", "main_xtal");
 146         if (i < 0)
 147                 return;
 148         mainxtal_name = of_clk_get_parent_name(np, i);
 149
 150         regmap = syscon_node_to_regmap(np);
 151         if (IS_ERR(regmap))
 152                 return;
 153
 154         sama5d2_pmc = pmc_data_allocate(PMC_I2S1_MUX + 1,
 155                                         nck(sama5d2_systemck),
 156                                         nck(sama5d2_periph32ck),
 157                                         nck(sama5d2_gck));
 158         if (!sama5d2_pmc)
 159                 return;
 160
 161         hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
 162                                            100000000);
 163         if (IS_ERR(hw))
 164                 goto err_free;
 165
 166         bypass = of_property_read_bool(np, "atmel,osc-bypass");
 167
 168         hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
 169                                         bypass);
 170         if (IS_ERR(hw))
 171                 goto err_free;
 172
 173         parent_names[0] = "main_rc_osc";
 174         parent_names[1] = "main_osc";
 175         hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
 176         if (IS_ERR(hw))
 177                 goto err_free;
 178
 179         sama5d2_pmc->chws[PMC_MAIN] = hw;
 180
 181         hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
 182                                    &sama5d3_pll_layout, &plla_characteristics);
 183         if (IS_ERR(hw))
 184                 goto err_free;
 185
 186         hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
 187         if (IS_ERR(hw))
 188                 goto err_free;
 189
 190         hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck",
 191                                               "mainck");
 192         if (IS_ERR(hw))
 193                 goto err_free;
 194
 195         hw = at91_clk_register_audio_pll_pad(regmap, "audiopll_padck",
 196                                              "audiopll_fracck");
 197         if (IS_ERR(hw))
 198                 goto err_free;
 199
 200         hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck",
 201                                              "audiopll_fracck");
 202         if (IS_ERR(hw))
 203                 goto err_free;
 204
 205         regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
 206         if (IS_ERR(regmap_sfr))
 207                 regmap_sfr = NULL;
 208
 209         hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck");
 210         if (IS_ERR(hw))
 211                 goto err_free;
 212
 213         sama5d2_pmc->chws[PMC_UTMI] = hw;
 214
 215         parent_names[0] = slck_name;
 216         parent_names[1] = "mainck";
 217         parent_names[2] = "plladivck";
 218         parent_names[3] = "utmick";
 219         hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
 220                                       &at91sam9x5_master_layout,
 221                                       &mck_characteristics);
 222         if (IS_ERR(hw))
 223                 goto err_free;
 224
 225         sama5d2_pmc->chws[PMC_MCK] = hw;
 226
 227         hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
 228         if (IS_ERR(hw))
 229                 goto err_free;
 230
 231         sama5d2_pmc->chws[PMC_MCK2] = hw;
 232
 233         parent_names[0] = "plladivck";
 234         parent_names[1] = "utmick";
 235         hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
 236         if (IS_ERR(hw))
 237                 goto err_free;
 238
 239         parent_names[0] = slck_name;
 240         parent_names[1] = "mainck";
 241         parent_names[2] = "plladivck";
 242         parent_names[3] = "utmick";
 243         parent_names[4] = "mck";
 244         for (i = 0; i < 3; i++) {
 245                 char name[6];
 246
 247                 snprintf(name, sizeof(name), "prog%d", i);
 248
 249                 hw = at91_clk_register_programmable(regmap, name,
 250                                                     parent_names, 5, i,
 251                                                     &at91sam9x5_programmable_layout);
 252                 if (IS_ERR(hw))
 253                         goto err_free;
 254         }
 255
 256         for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) {
 257                 hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n,
 258                                               sama5d2_systemck[i].p,
 259                                               sama5d2_systemck[i].id);
 260                 if (IS_ERR(hw))
 261                         goto err_free;
 262
 263                 sama5d2_pmc->shws[sama5d2_systemck[i].id] = hw;
 264         }
 265
 266         for (i = 0; i < ARRAY_SIZE(sama5d2_periphck); i++) {
 267                 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
 268                                                          sama5d2_periphck[i].n,
 269                                                          "masterck",
 270                                                          sama5d2_periphck[i].id,
 271                                                          &range);
 272                 if (IS_ERR(hw))
 273                         goto err_free;
 274
 275                 sama5d2_pmc->phws[sama5d2_periphck[i].id] = hw;
 276         }
 277
 278         for (i = 0; i < ARRAY_SIZE(sama5d2_periph32ck); i++) {
 279                 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
 280                                                          sama5d2_periph32ck[i].n,
 281                                                          "h32mxck",
 282                                                          sama5d2_periph32ck[i].id,
 283                                                          &sama5d2_periph32ck[i].r);
 284                 if (IS_ERR(hw))
 285                         goto err_free;
 286
 287                 sama5d2_pmc->phws[sama5d2_periph32ck[i].id] = hw;
 288         }
 289
 290         parent_names[0] = slck_name;
 291         parent_names[1] = "mainck";
 292         parent_names[2] = "plladivck";
 293         parent_names[3] = "utmick";
 294         parent_names[4] = "mck";
 295         parent_names[5] = "audiopll_pmcck";
 296         for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) {
 297                 hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
 298                                                  sama5d2_gck[i].n,
 299                                                  parent_names, 6,
 300                                                  sama5d2_gck[i].id,
 301                                                  sama5d2_gck[i].pll,
 302                                                  &sama5d2_gck[i].r);
 303                 if (IS_ERR(hw))
 304                         goto err_free;
 305
 306                 sama5d2_pmc->ghws[sama5d2_gck[i].id] = hw;
 307         }
 308
 309         if (regmap_sfr) {
 310                 parent_names[0] = "i2s0_clk";
 311                 parent_names[1] = "i2s0_gclk";
 312                 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s0_muxclk",
 313                                                parent_names, 2, 0);
 314                 if (IS_ERR(hw))
 315                         goto err_free;
 316
 317                 sama5d2_pmc->chws[PMC_I2S0_MUX] = hw;
 318
 319                 parent_names[0] = "i2s1_clk";
 320                 parent_names[1] = "i2s1_gclk";
 321                 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s1_muxclk",
 322                                                parent_names, 2, 1);
 323                 if (IS_ERR(hw))
 324                         goto err_free;
 325
 326                 sama5d2_pmc->chws[PMC_I2S1_MUX] = hw;
 327         }
 328
 329         of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d2_pmc);
 330
 331         return;
 332
 333 err_free:
 334         pmc_data_free(sama5d2_pmc);
 335 }
 336 CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup);