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); 337