arch/arm/mach-at91/sama5d3.c

   1 /*
   2  *  Chip-specific setup code for the SAMA5D3 family
   3  *
   4  *  Copyright (C) 2013 Atmel,
   5  *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
   6  *
   7  * Licensed under GPLv2 or later.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/dma-mapping.h>
  12
  13 #include <asm/irq.h>
  14 #include <asm/mach/arch.h>
  15 #include <asm/mach/map.h>
  16 #include <mach/sama5d3.h>
  17 #include <mach/at91_pmc.h>
  18 #include <mach/cpu.h>
  19
  20 #include "soc.h"
  21 #include "generic.h"
  22 #include "clock.h"
  23 #include "sam9_smc.h"
  24
  25 /* --------------------------------------------------------------------
  26  *  Clocks
  27  * -------------------------------------------------------------------- */
  28
  29 /*
  30  * The peripheral clocks.
  31  */
  32
  33 static struct clk pioA_clk = {
  34         .name           = "pioA_clk",
  35         .pid            = SAMA5D3_ID_PIOA,
  36         .type           = CLK_TYPE_PERIPHERAL,
  37 };
  38 static struct clk pioB_clk = {
  39         .name           = "pioB_clk",
  40         .pid            = SAMA5D3_ID_PIOB,
  41         .type           = CLK_TYPE_PERIPHERAL,
  42 };
  43 static struct clk pioC_clk = {
  44         .name           = "pioC_clk",
  45         .pid            = SAMA5D3_ID_PIOC,
  46         .type           = CLK_TYPE_PERIPHERAL,
  47 };
  48 static struct clk pioD_clk = {
  49         .name           = "pioD_clk",
  50         .pid            = SAMA5D3_ID_PIOD,
  51         .type           = CLK_TYPE_PERIPHERAL,
  52 };
  53 static struct clk pioE_clk = {
  54         .name           = "pioE_clk",
  55         .pid            = SAMA5D3_ID_PIOE,
  56         .type           = CLK_TYPE_PERIPHERAL,
  57 };
  58 static struct clk usart0_clk = {
  59         .name           = "usart0_clk",
  60         .pid            = SAMA5D3_ID_USART0,
  61         .type           = CLK_TYPE_PERIPHERAL,
  62         .div            = AT91_PMC_PCR_DIV2,
  63 };
  64 static struct clk usart1_clk = {
  65         .name           = "usart1_clk",
  66         .pid            = SAMA5D3_ID_USART1,
  67         .type           = CLK_TYPE_PERIPHERAL,
  68         .div            = AT91_PMC_PCR_DIV2,
  69 };
  70 static struct clk usart2_clk = {
  71         .name           = "usart2_clk",
  72         .pid            = SAMA5D3_ID_USART2,
  73         .type           = CLK_TYPE_PERIPHERAL,
  74         .div            = AT91_PMC_PCR_DIV2,
  75 };
  76 static struct clk usart3_clk = {
  77         .name           = "usart3_clk",
  78         .pid            = SAMA5D3_ID_USART3,
  79         .type           = CLK_TYPE_PERIPHERAL,
  80         .div            = AT91_PMC_PCR_DIV2,
  81 };
  82 static struct clk uart0_clk = {
  83         .name           = "uart0_clk",
  84         .pid            = SAMA5D3_ID_UART0,
  85         .type           = CLK_TYPE_PERIPHERAL,
  86         .div            = AT91_PMC_PCR_DIV2,
  87 };
  88 static struct clk uart1_clk = {
  89         .name           = "uart1_clk",
  90         .pid            = SAMA5D3_ID_UART1,
  91         .type           = CLK_TYPE_PERIPHERAL,
  92         .div            = AT91_PMC_PCR_DIV2,
  93 };
  94 static struct clk twi0_clk = {
  95         .name           = "twi0_clk",
  96         .pid            = SAMA5D3_ID_TWI0,
  97         .type           = CLK_TYPE_PERIPHERAL,
  98         .div            = AT91_PMC_PCR_DIV8,
  99 };
 100 static struct clk twi1_clk = {
 101         .name           = "twi1_clk",
 102         .pid            = SAMA5D3_ID_TWI1,
 103         .type           = CLK_TYPE_PERIPHERAL,
 104         .div            = AT91_PMC_PCR_DIV8,
 105 };
 106 static struct clk twi2_clk = {
 107         .name           = "twi2_clk",
 108         .pid            = SAMA5D3_ID_TWI2,
 109         .type           = CLK_TYPE_PERIPHERAL,
 110         .div            = AT91_PMC_PCR_DIV8,
 111 };
 112 static struct clk mmc0_clk = {
 113         .name           = "mci0_clk",
 114         .pid            = SAMA5D3_ID_HSMCI0,
 115         .type           = CLK_TYPE_PERIPHERAL,
 116 };
 117 static struct clk mmc1_clk = {
 118         .name           = "mci1_clk",
 119         .pid            = SAMA5D3_ID_HSMCI1,
 120         .type           = CLK_TYPE_PERIPHERAL,
 121 };
 122 static struct clk mmc2_clk = {
 123         .name           = "mci2_clk",
 124         .pid            = SAMA5D3_ID_HSMCI2,
 125         .type           = CLK_TYPE_PERIPHERAL,
 126 };
 127 static struct clk spi0_clk = {
 128         .name           = "spi0_clk",
 129         .pid            = SAMA5D3_ID_SPI0,
 130         .type           = CLK_TYPE_PERIPHERAL,
 131 };
 132 static struct clk spi1_clk = {
 133         .name           = "spi1_clk",
 134         .pid            = SAMA5D3_ID_SPI1,
 135         .type           = CLK_TYPE_PERIPHERAL,
 136 };
 137 static struct clk tcb0_clk = {
 138         .name           = "tcb0_clk",
 139         .pid            = SAMA5D3_ID_TC0,
 140         .type           = CLK_TYPE_PERIPHERAL,
 141         .div            = AT91_PMC_PCR_DIV2,
 142 };
 143 static struct clk tcb1_clk = {
 144         .name           = "tcb1_clk",
 145         .pid            = SAMA5D3_ID_TC1,
 146         .type           = CLK_TYPE_PERIPHERAL,
 147         .div            = AT91_PMC_PCR_DIV2,
 148 };
 149 static struct clk adc_clk = {
 150         .name           = "adc_clk",
 151         .pid            = SAMA5D3_ID_ADC,
 152         .type           = CLK_TYPE_PERIPHERAL,
 153         .div            = AT91_PMC_PCR_DIV2,
 154 };
 155 static struct clk adc_op_clk = {
 156         .name           = "adc_op_clk",
 157         .type           = CLK_TYPE_PERIPHERAL,
 158         .rate_hz        = 5000000,
 159 };
 160 static struct clk dma0_clk = {
 161         .name           = "dma0_clk",
 162         .pid            = SAMA5D3_ID_DMA0,
 163         .type           = CLK_TYPE_PERIPHERAL,
 164 };
 165 static struct clk dma1_clk = {
 166         .name           = "dma1_clk",
 167         .pid            = SAMA5D3_ID_DMA1,
 168         .type           = CLK_TYPE_PERIPHERAL,
 169 };
 170 static struct clk uhphs_clk = {
 171         .name           = "uhphs",
 172         .pid            = SAMA5D3_ID_UHPHS,
 173         .type           = CLK_TYPE_PERIPHERAL,
 174 };
 175 static struct clk udphs_clk = {
 176         .name           = "udphs_clk",
 177         .pid            = SAMA5D3_ID_UDPHS,
 178         .type           = CLK_TYPE_PERIPHERAL,
 179 };
 180 /* gmac only for sama5d33, sama5d34, sama5d35 */
 181 static struct clk macb0_clk = {
 182         .name           = "macb0_clk",
 183         .pid            = SAMA5D3_ID_GMAC,
 184         .type           = CLK_TYPE_PERIPHERAL,
 185 };
 186 /* emac only for sama5d31, sama5d35 */
 187 static struct clk macb1_clk = {
 188         .name           = "macb1_clk",
 189         .pid            = SAMA5D3_ID_EMAC,
 190         .type           = CLK_TYPE_PERIPHERAL,
 191 };
 192 /* lcd only for sama5d31, sama5d33, sama5d34 */
 193 static struct clk lcdc_clk = {
 194         .name           = "lcdc_clk",
 195         .pid            = SAMA5D3_ID_LCDC,
 196         .type           = CLK_TYPE_PERIPHERAL,
 197 };
 198 /* isi only for sama5d33, sama5d35 */
 199 static struct clk isi_clk = {
 200         .name           = "isi_clk",
 201         .pid            = SAMA5D3_ID_ISI,
 202         .type           = CLK_TYPE_PERIPHERAL,
 203 };
 204 static struct clk can0_clk = {
 205         .name           = "can0_clk",
 206         .pid            = SAMA5D3_ID_CAN0,
 207         .type           = CLK_TYPE_PERIPHERAL,
 208         .div            = AT91_PMC_PCR_DIV2,
 209 };
 210 static struct clk can1_clk = {
 211         .name           = "can1_clk",
 212         .pid            = SAMA5D3_ID_CAN1,
 213         .type           = CLK_TYPE_PERIPHERAL,
 214         .div            = AT91_PMC_PCR_DIV2,
 215 };
 216 static struct clk ssc0_clk = {
 217         .name           = "ssc0_clk",
 218         .pid            = SAMA5D3_ID_SSC0,
 219         .type           = CLK_TYPE_PERIPHERAL,
 220         .div            = AT91_PMC_PCR_DIV2,
 221 };
 222 static struct clk ssc1_clk = {
 223         .name           = "ssc1_clk",
 224         .pid            = SAMA5D3_ID_SSC1,
 225         .type           = CLK_TYPE_PERIPHERAL,
 226         .div            = AT91_PMC_PCR_DIV2,
 227 };
 228 static struct clk sha_clk = {
 229         .name           = "sha_clk",
 230         .pid            = SAMA5D3_ID_SHA,
 231         .type           = CLK_TYPE_PERIPHERAL,
 232         .div            = AT91_PMC_PCR_DIV8,
 233 };
 234 static struct clk aes_clk = {
 235         .name           = "aes_clk",
 236         .pid            = SAMA5D3_ID_AES,
 237         .type           = CLK_TYPE_PERIPHERAL,
 238 };
 239 static struct clk tdes_clk = {
 240         .name           = "tdes_clk",
 241         .pid            = SAMA5D3_ID_TDES,
 242         .type           = CLK_TYPE_PERIPHERAL,
 243 };
 244
 245 static struct clk *periph_clocks[] __initdata = {
 246         &pioA_clk,
 247         &pioB_clk,
 248         &pioC_clk,
 249         &pioD_clk,
 250         &pioE_clk,
 251         &usart0_clk,
 252         &usart1_clk,
 253         &usart2_clk,
 254         &usart3_clk,
 255         &uart0_clk,
 256         &uart1_clk,
 257         &twi0_clk,
 258         &twi1_clk,
 259         &twi2_clk,
 260         &mmc0_clk,
 261         &mmc1_clk,
 262         &mmc2_clk,
 263         &spi0_clk,
 264         &spi1_clk,
 265         &tcb0_clk,
 266         &tcb1_clk,
 267         &adc_clk,
 268         &adc_op_clk,
 269         &dma0_clk,
 270         &dma1_clk,
 271         &uhphs_clk,
 272         &udphs_clk,
 273         &macb0_clk,
 274         &macb1_clk,
 275         &lcdc_clk,
 276         &isi_clk,
 277         &can0_clk,
 278         &can1_clk,
 279         &ssc0_clk,
 280         &ssc1_clk,
 281         &sha_clk,
 282         &aes_clk,
 283         &tdes_clk,
 284 };
 285
 286 static struct clk pck0 = {
 287         .name           = "pck0",
 288         .pmc_mask       = AT91_PMC_PCK0,
 289         .type           = CLK_TYPE_PROGRAMMABLE,
 290         .id             = 0,
 291 };
 292
 293 static struct clk pck1 = {
 294         .name           = "pck1",
 295         .pmc_mask       = AT91_PMC_PCK1,
 296         .type           = CLK_TYPE_PROGRAMMABLE,
 297         .id             = 1,
 298 };
 299
 300 static struct clk pck2 = {
 301         .name           = "pck2",
 302         .pmc_mask       = AT91_PMC_PCK2,
 303         .type           = CLK_TYPE_PROGRAMMABLE,
 304         .id             = 2,
 305 };
 306
 307 static struct clk_lookup periph_clocks_lookups[] = {
 308         /* lookup table for DT entries */
 309         CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
 310         CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
 311         CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
 312         CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioC_clk),
 313         CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioD_clk),
 314         CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioE_clk),
 315         CLKDEV_CON_DEV_ID("usart", "f001c000.serial", &usart0_clk),
 316         CLKDEV_CON_DEV_ID("usart", "f0020000.serial", &usart1_clk),
 317         CLKDEV_CON_DEV_ID("usart", "f8020000.serial", &usart2_clk),
 318         CLKDEV_CON_DEV_ID("usart", "f8024000.serial", &usart3_clk),
 319         CLKDEV_CON_DEV_ID(NULL, "f0014000.i2c", &twi0_clk),
 320         CLKDEV_CON_DEV_ID(NULL, "f0018000.i2c", &twi1_clk),
 321         CLKDEV_CON_DEV_ID(NULL, "f801c000.i2c", &twi2_clk),
 322         CLKDEV_CON_DEV_ID("mci_clk", "f0000000.mmc", &mmc0_clk),
 323         CLKDEV_CON_DEV_ID("mci_clk", "f8000000.mmc", &mmc1_clk),
 324         CLKDEV_CON_DEV_ID("mci_clk", "f8004000.mmc", &mmc2_clk),
 325         CLKDEV_CON_DEV_ID("spi_clk", "f0004000.spi", &spi0_clk),
 326         CLKDEV_CON_DEV_ID("spi_clk", "f8008000.spi", &spi1_clk),
 327         CLKDEV_CON_DEV_ID("t0_clk", "f0010000.timer", &tcb0_clk),
 328         CLKDEV_CON_DEV_ID("t0_clk", "f8014000.timer", &tcb1_clk),
 329         CLKDEV_CON_DEV_ID("tsc_clk", "f8018000.tsadcc", &adc_clk),
 330         CLKDEV_CON_DEV_ID("dma_clk", "ffffe600.dma-controller", &dma0_clk),
 331         CLKDEV_CON_DEV_ID("dma_clk", "ffffe800.dma-controller", &dma1_clk),
 332         CLKDEV_CON_DEV_ID("hclk", "600000.ohci", &uhphs_clk),
 333         CLKDEV_CON_DEV_ID("ohci_clk", "600000.ohci", &uhphs_clk),
 334         CLKDEV_CON_DEV_ID("ehci_clk", "700000.ehci", &uhphs_clk),
 335         CLKDEV_CON_DEV_ID("pclk", "500000.gadget", &udphs_clk),
 336         CLKDEV_CON_DEV_ID("hclk", "500000.gadget", &utmi_clk),
 337         CLKDEV_CON_DEV_ID("hclk", "f0028000.ethernet", &macb0_clk),
 338         CLKDEV_CON_DEV_ID("pclk", "f0028000.ethernet", &macb0_clk),
 339         CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb1_clk),
 340         CLKDEV_CON_DEV_ID("pclk", "f802c000.ethernet", &macb1_clk),
 341         CLKDEV_CON_DEV_ID("pclk", "f0008000.ssc", &ssc0_clk),
 342         CLKDEV_CON_DEV_ID("pclk", "f000c000.ssc", &ssc1_clk),
 343         CLKDEV_CON_DEV_ID("can_clk", "f000c000.can", &can0_clk),
 344         CLKDEV_CON_DEV_ID("can_clk", "f8010000.can", &can1_clk),
 345         CLKDEV_CON_DEV_ID("sha_clk", "f8034000.sha", &sha_clk),
 346         CLKDEV_CON_DEV_ID("aes_clk", "f8038000.aes", &aes_clk),
 347         CLKDEV_CON_DEV_ID("tdes_clk", "f803c000.tdes", &tdes_clk),
 348 };
 349
 350 static void __init sama5d3_register_clocks(void)
 351 {
 352         int i;
 353
 354         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
 355                 clk_register(periph_clocks[i]);
 356
 357         clkdev_add_table(periph_clocks_lookups,
 358                          ARRAY_SIZE(periph_clocks_lookups));
 359
 360         clk_register(&pck0);
 361         clk_register(&pck1);
 362         clk_register(&pck2);
 363 }
 364
 365 /* --------------------------------------------------------------------
 366  *  AT91SAM9x5 processor initialization
 367  * -------------------------------------------------------------------- */
 368
 369 static void __init sama5d3_map_io(void)
 370 {
 371         at91_init_sram(0, SAMA5D3_SRAM_BASE, SAMA5D3_SRAM_SIZE);
 372 }
 373
 374 static void __init sama5d3_initialize(void)
 375 {
 376         at91_sysirq_mask_rtc(SAMA5D3_BASE_RTC);
 377 }
 378
 379 AT91_SOC_START(sama5d3)
 380         .map_io = sama5d3_map_io,
 381         .register_clocks = sama5d3_register_clocks,
 382         .init = sama5d3_initialize,
 383 AT91_SOC_END