arch/arm/mach-at91/at91sam9g45.c

   1 /*
   2  *  Chip-specific setup code for the AT91SAM9G45 family
   3  *
   4  *  Copyright (C) 2009 Atmel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/dma-mapping.h>
  15
  16 #include <asm/irq.h>
  17 #include <asm/mach/arch.h>
  18 #include <asm/mach/map.h>
  19 #include <asm/system_misc.h>
  20 #include <mach/at91sam9g45.h>
  21 #include <mach/at91_pmc.h>
  22 #include <mach/cpu.h>
  23
  24 #include "at91_aic.h"
  25 #include "soc.h"
  26 #include "generic.h"
  27 #include "clock.h"
  28 #include "sam9_smc.h"
  29
  30 /* --------------------------------------------------------------------
  31  *  Clocks
  32  * -------------------------------------------------------------------- */
  33
  34 /*
  35  * The peripheral clocks.
  36  */
  37 static struct clk pioA_clk = {
  38         .name           = "pioA_clk",
  39         .pmc_mask       = 1 << AT91SAM9G45_ID_PIOA,
  40         .type           = CLK_TYPE_PERIPHERAL,
  41 };
  42 static struct clk pioB_clk = {
  43         .name           = "pioB_clk",
  44         .pmc_mask       = 1 << AT91SAM9G45_ID_PIOB,
  45         .type           = CLK_TYPE_PERIPHERAL,
  46 };
  47 static struct clk pioC_clk = {
  48         .name           = "pioC_clk",
  49         .pmc_mask       = 1 << AT91SAM9G45_ID_PIOC,
  50         .type           = CLK_TYPE_PERIPHERAL,
  51 };
  52 static struct clk pioDE_clk = {
  53         .name           = "pioDE_clk",
  54         .pmc_mask       = 1 << AT91SAM9G45_ID_PIODE,
  55         .type           = CLK_TYPE_PERIPHERAL,
  56 };
  57 static struct clk trng_clk = {
  58         .name           = "trng_clk",
  59         .pmc_mask       = 1 << AT91SAM9G45_ID_TRNG,
  60         .type           = CLK_TYPE_PERIPHERAL,
  61 };
  62 static struct clk usart0_clk = {
  63         .name           = "usart0_clk",
  64         .pmc_mask       = 1 << AT91SAM9G45_ID_US0,
  65         .type           = CLK_TYPE_PERIPHERAL,
  66 };
  67 static struct clk usart1_clk = {
  68         .name           = "usart1_clk",
  69         .pmc_mask       = 1 << AT91SAM9G45_ID_US1,
  70         .type           = CLK_TYPE_PERIPHERAL,
  71 };
  72 static struct clk usart2_clk = {
  73         .name           = "usart2_clk",
  74         .pmc_mask       = 1 << AT91SAM9G45_ID_US2,
  75         .type           = CLK_TYPE_PERIPHERAL,
  76 };
  77 static struct clk usart3_clk = {
  78         .name           = "usart3_clk",
  79         .pmc_mask       = 1 << AT91SAM9G45_ID_US3,
  80         .type           = CLK_TYPE_PERIPHERAL,
  81 };
  82 static struct clk mmc0_clk = {
  83         .name           = "mci0_clk",
  84         .pmc_mask       = 1 << AT91SAM9G45_ID_MCI0,
  85         .type           = CLK_TYPE_PERIPHERAL,
  86 };
  87 static struct clk twi0_clk = {
  88         .name           = "twi0_clk",
  89         .pmc_mask       = 1 << AT91SAM9G45_ID_TWI0,
  90         .type           = CLK_TYPE_PERIPHERAL,
  91 };
  92 static struct clk twi1_clk = {
  93         .name           = "twi1_clk",
  94         .pmc_mask       = 1 << AT91SAM9G45_ID_TWI1,
  95         .type           = CLK_TYPE_PERIPHERAL,
  96 };
  97 static struct clk spi0_clk = {
  98         .name           = "spi0_clk",
  99         .pmc_mask       = 1 << AT91SAM9G45_ID_SPI0,
 100         .type           = CLK_TYPE_PERIPHERAL,
 101 };
 102 static struct clk spi1_clk = {
 103         .name           = "spi1_clk",
 104         .pmc_mask       = 1 << AT91SAM9G45_ID_SPI1,
 105         .type           = CLK_TYPE_PERIPHERAL,
 106 };
 107 static struct clk ssc0_clk = {
 108         .name           = "ssc0_clk",
 109         .pmc_mask       = 1 << AT91SAM9G45_ID_SSC0,
 110         .type           = CLK_TYPE_PERIPHERAL,
 111 };
 112 static struct clk ssc1_clk = {
 113         .name           = "ssc1_clk",
 114         .pmc_mask       = 1 << AT91SAM9G45_ID_SSC1,
 115         .type           = CLK_TYPE_PERIPHERAL,
 116 };
 117 static struct clk tcb0_clk = {
 118         .name           = "tcb0_clk",
 119         .pmc_mask       = 1 << AT91SAM9G45_ID_TCB,
 120         .type           = CLK_TYPE_PERIPHERAL,
 121 };
 122 static struct clk pwm_clk = {
 123         .name           = "pwm_clk",
 124         .pmc_mask       = 1 << AT91SAM9G45_ID_PWMC,
 125         .type           = CLK_TYPE_PERIPHERAL,
 126 };
 127 static struct clk tsc_clk = {
 128         .name           = "tsc_clk",
 129         .pmc_mask       = 1 << AT91SAM9G45_ID_TSC,
 130         .type           = CLK_TYPE_PERIPHERAL,
 131 };
 132 static struct clk dma_clk = {
 133         .name           = "dma_clk",
 134         .pmc_mask       = 1 << AT91SAM9G45_ID_DMA,
 135         .type           = CLK_TYPE_PERIPHERAL,
 136 };
 137 static struct clk uhphs_clk = {
 138         .name           = "uhphs_clk",
 139         .pmc_mask       = 1 << AT91SAM9G45_ID_UHPHS,
 140         .type           = CLK_TYPE_PERIPHERAL,
 141 };
 142 static struct clk lcdc_clk = {
 143         .name           = "lcdc_clk",
 144         .pmc_mask       = 1 << AT91SAM9G45_ID_LCDC,
 145         .type           = CLK_TYPE_PERIPHERAL,
 146 };
 147 static struct clk ac97_clk = {
 148         .name           = "ac97_clk",
 149         .pmc_mask       = 1 << AT91SAM9G45_ID_AC97C,
 150         .type           = CLK_TYPE_PERIPHERAL,
 151 };
 152 static struct clk macb_clk = {
 153         .name           = "pclk",
 154         .pmc_mask       = 1 << AT91SAM9G45_ID_EMAC,
 155         .type           = CLK_TYPE_PERIPHERAL,
 156 };
 157 static struct clk isi_clk = {
 158         .name           = "isi_clk",
 159         .pmc_mask       = 1 << AT91SAM9G45_ID_ISI,
 160         .type           = CLK_TYPE_PERIPHERAL,
 161 };
 162 static struct clk udphs_clk = {
 163         .name           = "udphs_clk",
 164         .pmc_mask       = 1 << AT91SAM9G45_ID_UDPHS,
 165         .type           = CLK_TYPE_PERIPHERAL,
 166 };
 167 static struct clk mmc1_clk = {
 168         .name           = "mci1_clk",
 169         .pmc_mask       = 1 << AT91SAM9G45_ID_MCI1,
 170         .type           = CLK_TYPE_PERIPHERAL,
 171 };
 172
 173 /* Video decoder clock - Only for sam9m10/sam9m11 */
 174 static struct clk vdec_clk = {
 175         .name           = "vdec_clk",
 176         .pmc_mask       = 1 << AT91SAM9G45_ID_VDEC,
 177         .type           = CLK_TYPE_PERIPHERAL,
 178 };
 179
 180 static struct clk adc_op_clk = {
 181         .name           = "adc_op_clk",
 182         .type           = CLK_TYPE_PERIPHERAL,
 183         .rate_hz        = 13200000,
 184 };
 185
 186 /* AES/TDES/SHA clock - Only for sam9m11/sam9g56 */
 187 static struct clk aestdessha_clk = {
 188         .name           = "aestdessha_clk",
 189         .pmc_mask       = 1 << AT91SAM9G45_ID_AESTDESSHA,
 190         .type           = CLK_TYPE_PERIPHERAL,
 191 };
 192
 193 static struct clk *periph_clocks[] __initdata = {
 194         &pioA_clk,
 195         &pioB_clk,
 196         &pioC_clk,
 197         &pioDE_clk,
 198         &trng_clk,
 199         &usart0_clk,
 200         &usart1_clk,
 201         &usart2_clk,
 202         &usart3_clk,
 203         &mmc0_clk,
 204         &twi0_clk,
 205         &twi1_clk,
 206         &spi0_clk,
 207         &spi1_clk,
 208         &ssc0_clk,
 209         &ssc1_clk,
 210         &tcb0_clk,
 211         &pwm_clk,
 212         &tsc_clk,
 213         &dma_clk,
 214         &uhphs_clk,
 215         &lcdc_clk,
 216         &ac97_clk,
 217         &macb_clk,
 218         &isi_clk,
 219         &udphs_clk,
 220         &mmc1_clk,
 221         &adc_op_clk,
 222         &aestdessha_clk,
 223         // irq0
 224 };
 225
 226 static struct clk_lookup periph_clocks_lookups[] = {
 227         /* One additional fake clock for macb_hclk */
 228         CLKDEV_CON_ID("hclk", &macb_clk),
 229         /* One additional fake clock for ohci */
 230         CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
 231         CLKDEV_CON_DEV_ID("hclk", "at91sam9g45-lcdfb.0", &lcdc_clk),
 232         CLKDEV_CON_DEV_ID("hclk", "at91sam9g45es-lcdfb.0", &lcdc_clk),
 233         CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
 234         CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
 235         CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
 236         CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
 237         CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
 238         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 239         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 240         CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
 241         CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
 242         CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi0_clk),
 243         CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.1", &twi1_clk),
 244         CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.0", &ssc0_clk),
 245         CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.1", &ssc1_clk),
 246         CLKDEV_CON_DEV_ID("pclk", "fff9c000.ssc", &ssc0_clk),
 247         CLKDEV_CON_DEV_ID("pclk", "fffa0000.ssc", &ssc1_clk),
 248         CLKDEV_CON_DEV_ID(NULL, "atmel-trng", &trng_clk),
 249         CLKDEV_CON_DEV_ID(NULL, "atmel_sha", &aestdessha_clk),
 250         CLKDEV_CON_DEV_ID(NULL, "atmel_tdes", &aestdessha_clk),
 251         CLKDEV_CON_DEV_ID(NULL, "atmel_aes", &aestdessha_clk),
 252         /* more usart lookup table for DT entries */
 253         CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
 254         CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
 255         CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
 256         CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
 257         CLKDEV_CON_DEV_ID("usart", "fff98000.serial", &usart3_clk),
 258         /* more tc lookup table for DT entries */
 259         CLKDEV_CON_DEV_ID("t0_clk", "fff7c000.timer", &tcb0_clk),
 260         CLKDEV_CON_DEV_ID("t0_clk", "fffd4000.timer", &tcb0_clk),
 261         CLKDEV_CON_DEV_ID("hclk", "700000.ohci", &uhphs_clk),
 262         CLKDEV_CON_DEV_ID("ehci_clk", "800000.ehci", &uhphs_clk),
 263         CLKDEV_CON_DEV_ID("mci_clk", "fff80000.mmc", &mmc0_clk),
 264         CLKDEV_CON_DEV_ID("mci_clk", "fffd0000.mmc", &mmc1_clk),
 265         CLKDEV_CON_DEV_ID(NULL, "fff84000.i2c", &twi0_clk),
 266         CLKDEV_CON_DEV_ID(NULL, "fff88000.i2c", &twi1_clk),
 267         CLKDEV_CON_DEV_ID("spi_clk", "fffa4000.spi", &spi0_clk),
 268         CLKDEV_CON_DEV_ID("spi_clk", "fffa8000.spi", &spi1_clk),
 269         /* fake hclk clock */
 270         CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &uhphs_clk),
 271         CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
 272         CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
 273         CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioC_clk),
 274         CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioDE_clk),
 275         CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioDE_clk),
 276
 277         CLKDEV_CON_ID("pioA", &pioA_clk),
 278         CLKDEV_CON_ID("pioB", &pioB_clk),
 279         CLKDEV_CON_ID("pioC", &pioC_clk),
 280         CLKDEV_CON_ID("pioD", &pioDE_clk),
 281         CLKDEV_CON_ID("pioE", &pioDE_clk),
 282         /* Fake adc clock */
 283         CLKDEV_CON_ID("adc_clk", &tsc_clk),
 284 };
 285
 286 static struct clk_lookup usart_clocks_lookups[] = {
 287         CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
 288         CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
 289         CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
 290         CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
 291         CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
 292 };
 293
 294 /*
 295  * The two programmable clocks.
 296  * You must configure pin multiplexing to bring these signals out.
 297  */
 298 static struct clk pck0 = {
 299         .name           = "pck0",
 300         .pmc_mask       = AT91_PMC_PCK0,
 301         .type           = CLK_TYPE_PROGRAMMABLE,
 302         .id             = 0,
 303 };
 304 static struct clk pck1 = {
 305         .name           = "pck1",
 306         .pmc_mask       = AT91_PMC_PCK1,
 307         .type           = CLK_TYPE_PROGRAMMABLE,
 308         .id             = 1,
 309 };
 310
 311 static void __init at91sam9g45_register_clocks(void)
 312 {
 313         int i;
 314
 315         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
 316                 clk_register(periph_clocks[i]);
 317
 318         clkdev_add_table(periph_clocks_lookups,
 319                          ARRAY_SIZE(periph_clocks_lookups));
 320         clkdev_add_table(usart_clocks_lookups,
 321                          ARRAY_SIZE(usart_clocks_lookups));
 322
 323         if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
 324                 clk_register(&vdec_clk);
 325
 326         clk_register(&pck0);
 327         clk_register(&pck1);
 328 }
 329
 330 /* --------------------------------------------------------------------
 331  *  GPIO
 332  * -------------------------------------------------------------------- */
 333
 334 static struct at91_gpio_bank at91sam9g45_gpio[] __initdata = {
 335         {
 336                 .id             = AT91SAM9G45_ID_PIOA,
 337                 .regbase        = AT91SAM9G45_BASE_PIOA,
 338         }, {
 339                 .id             = AT91SAM9G45_ID_PIOB,
 340                 .regbase        = AT91SAM9G45_BASE_PIOB,
 341         }, {
 342                 .id             = AT91SAM9G45_ID_PIOC,
 343                 .regbase        = AT91SAM9G45_BASE_PIOC,
 344         }, {
 345                 .id             = AT91SAM9G45_ID_PIODE,
 346                 .regbase        = AT91SAM9G45_BASE_PIOD,
 347         }, {
 348                 .id             = AT91SAM9G45_ID_PIODE,
 349                 .regbase        = AT91SAM9G45_BASE_PIOE,
 350         }
 351 };
 352
 353 /* --------------------------------------------------------------------
 354  *  AT91SAM9G45 processor initialization
 355  * -------------------------------------------------------------------- */
 356
 357 static void __init at91sam9g45_map_io(void)
 358 {
 359         at91_init_sram(0, AT91SAM9G45_SRAM_BASE, AT91SAM9G45_SRAM_SIZE);
 360 }
 361
 362 static void __init at91sam9g45_ioremap_registers(void)
 363 {
 364         at91_ioremap_shdwc(AT91SAM9G45_BASE_SHDWC);
 365         at91_ioremap_rstc(AT91SAM9G45_BASE_RSTC);
 366         at91_ioremap_ramc(0, AT91SAM9G45_BASE_DDRSDRC1, 512);
 367         at91_ioremap_ramc(1, AT91SAM9G45_BASE_DDRSDRC0, 512);
 368         at91sam926x_ioremap_pit(AT91SAM9G45_BASE_PIT);
 369         at91sam9_ioremap_smc(0, AT91SAM9G45_BASE_SMC);
 370         at91_ioremap_matrix(AT91SAM9G45_BASE_MATRIX);
 371 }
 372
 373 static void __init at91sam9g45_initialize(void)
 374 {
 375         arm_pm_idle = at91sam9_idle;
 376         arm_pm_restart = at91sam9g45_restart;
 377         at91_extern_irq = (1 << AT91SAM9G45_ID_IRQ0);
 378
 379         /* Register GPIO subsystem */
 380         at91_gpio_init(at91sam9g45_gpio, 5);
 381 }
 382
 383 /* --------------------------------------------------------------------
 384  *  Interrupt initialization
 385  * -------------------------------------------------------------------- */
 386
 387 /*
 388  * The default interrupt priority levels (0 = lowest, 7 = highest).
 389  */
 390 static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
 391         7,      /* Advanced Interrupt Controller (FIQ) */
 392         7,      /* System Peripherals */
 393         1,      /* Parallel IO Controller A */
 394         1,      /* Parallel IO Controller B */
 395         1,      /* Parallel IO Controller C */
 396         1,      /* Parallel IO Controller D and E */
 397         0,
 398         5,      /* USART 0 */
 399         5,      /* USART 1 */
 400         5,      /* USART 2 */
 401         5,      /* USART 3 */
 402         0,      /* Multimedia Card Interface 0 */
 403         6,      /* Two-Wire Interface 0 */
 404         6,      /* Two-Wire Interface 1 */
 405         5,      /* Serial Peripheral Interface 0 */
 406         5,      /* Serial Peripheral Interface 1 */
 407         4,      /* Serial Synchronous Controller 0 */
 408         4,      /* Serial Synchronous Controller 1 */
 409         0,      /* Timer Counter 0, 1, 2, 3, 4 and 5 */
 410         0,      /* Pulse Width Modulation Controller */
 411         0,      /* Touch Screen Controller */
 412         0,      /* DMA Controller */
 413         2,      /* USB Host High Speed port */
 414         3,      /* LDC Controller */
 415         5,      /* AC97 Controller */
 416         3,      /* Ethernet */
 417         0,      /* Image Sensor Interface */
 418         2,      /* USB Device High speed port */
 419         0,      /* AESTDESSHA Crypto HW Accelerators */
 420         0,      /* Multimedia Card Interface 1 */
 421         0,
 422         0,      /* Advanced Interrupt Controller (IRQ0) */
 423 };
 424
 425 AT91_SOC_START(at91sam9g45)
 426         .map_io = at91sam9g45_map_io,
 427         .default_irq_priority = at91sam9g45_default_irq_priority,
 428         .ioremap_registers = at91sam9g45_ioremap_registers,
 429         .register_clocks = at91sam9g45_register_clocks,
 430         .init = at91sam9g45_initialize,
 431 AT91_SOC_END