arch/arm/mach-mxs/mach-m28evk.c

   1 /*
   2  * Copyright (C) 2011
   3  * Stefano Babic, DENX Software Engineering, <sbabic@denx.de>
   4  *
   5  * based on: mach-mx28_evk.c
   6  * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/delay.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/gpio.h>
  22 #include <linux/leds.h>
  23 #include <linux/irq.h>
  24 #include <linux/clk.h>
  25 #include <linux/i2c.h>
  26 #include <linux/i2c/at24.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/time.h>
  31
  32 #include <mach/common.h>
  33 #include <mach/iomux-mx28.h>
  34
  35 #include "devices-mx28.h"
  36
  37 #define M28EVK_GPIO_USERLED1    MXS_GPIO_NR(3, 16)
  38 #define M28EVK_GPIO_USERLED2    MXS_GPIO_NR(3, 17)
  39
  40 #define MX28EVK_BL_ENABLE       MXS_GPIO_NR(3, 18)
  41 #define M28EVK_LCD_ENABLE       MXS_GPIO_NR(3, 28)
  42
  43 #define MX28EVK_MMC0_WRITE_PROTECT      MXS_GPIO_NR(2, 12)
  44 #define MX28EVK_MMC1_WRITE_PROTECT      MXS_GPIO_NR(0, 28)
  45
  46 static const iomux_cfg_t m28evk_pads[] __initconst = {
  47         /* duart */
  48         MX28_PAD_AUART0_CTS__DUART_RX | MXS_PAD_CTRL,
  49         MX28_PAD_AUART0_RTS__DUART_TX | MXS_PAD_CTRL,
  50
  51         /* auart0 */
  52         MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
  53         MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
  54
  55         /* auart3 */
  56         MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
  57         MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
  58         MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
  59         MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
  60
  61 #define MXS_PAD_FEC     (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
  62         /* fec0 */
  63         MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
  64         MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
  65         MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
  66         MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
  67         MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
  68         MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
  69         MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
  70         MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
  71         MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
  72         /* fec1 */
  73         MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
  74         MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
  75         MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
  76         MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
  77         MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
  78         MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
  79
  80         /* flexcan0 */
  81         MX28_PAD_GPMI_RDY2__CAN0_TX,
  82         MX28_PAD_GPMI_RDY3__CAN0_RX,
  83
  84         /* flexcan1 */
  85         MX28_PAD_GPMI_CE2N__CAN1_TX,
  86         MX28_PAD_GPMI_CE3N__CAN1_RX,
  87
  88         /* I2C */
  89         MX28_PAD_I2C0_SCL__I2C0_SCL,
  90         MX28_PAD_I2C0_SDA__I2C0_SDA,
  91
  92         /* mxsfb (lcdif) */
  93         MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
  94         MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
  95         MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
  96         MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
  97         MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
  98         MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
  99         MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
 100         MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
 101         MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
 102         MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
 103         MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 104         MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 105         MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 106         MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 107         MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 108         MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 109         MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 110         MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 111         MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
 112         MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
 113         MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
 114         MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
 115         MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
 116         MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
 117
 118         MX28_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
 119         MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MXS_PAD_CTRL,
 120
 121         /* mmc0 */
 122         MX28_PAD_SSP0_DATA0__SSP0_D0 |
 123                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 124         MX28_PAD_SSP0_DATA1__SSP0_D1 |
 125                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 126         MX28_PAD_SSP0_DATA2__SSP0_D2 |
 127                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 128         MX28_PAD_SSP0_DATA3__SSP0_D3 |
 129                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 130         MX28_PAD_SSP0_DATA4__SSP0_D4 |
 131                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 132         MX28_PAD_SSP0_DATA5__SSP0_D5 |
 133                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 134         MX28_PAD_SSP0_DATA6__SSP0_D6 |
 135                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 136         MX28_PAD_SSP0_DATA7__SSP0_D7 |
 137                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 138         MX28_PAD_SSP0_CMD__SSP0_CMD |
 139                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 140         MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
 141                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 142         MX28_PAD_SSP0_SCK__SSP0_SCK |
 143                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 144
 145         /* mmc1 */
 146         MX28_PAD_GPMI_D00__SSP1_D0 |
 147                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 148         MX28_PAD_GPMI_D01__SSP1_D1 |
 149                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 150         MX28_PAD_GPMI_D02__SSP1_D2 |
 151                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 152         MX28_PAD_GPMI_D03__SSP1_D3 |
 153                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 154         MX28_PAD_GPMI_D04__SSP1_D4 |
 155                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 156         MX28_PAD_GPMI_D05__SSP1_D5 |
 157                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 158         MX28_PAD_GPMI_D06__SSP1_D6 |
 159                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 160         MX28_PAD_GPMI_D07__SSP1_D7 |
 161                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 162         MX28_PAD_GPMI_RDY1__SSP1_CMD |
 163                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 164         MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT |
 165                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 166         MX28_PAD_GPMI_WRN__SSP1_SCK |
 167                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 168         /* write protect */
 169         MX28_PAD_GPMI_RESETN__GPIO_0_28 |
 170                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 171         /* slot power enable */
 172         MX28_PAD_PWM4__GPIO_3_29 |
 173                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 174
 175         /* led */
 176         MX28_PAD_PWM0__GPIO_3_16 | MXS_PAD_CTRL,
 177         MX28_PAD_PWM1__GPIO_3_17 | MXS_PAD_CTRL,
 178
 179         /* nand */
 180         MX28_PAD_GPMI_D00__GPMI_D0 |
 181                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 182         MX28_PAD_GPMI_D01__GPMI_D1 |
 183                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 184         MX28_PAD_GPMI_D02__GPMI_D2 |
 185                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 186         MX28_PAD_GPMI_D03__GPMI_D3 |
 187                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 188         MX28_PAD_GPMI_D04__GPMI_D4 |
 189                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 190         MX28_PAD_GPMI_D05__GPMI_D5 |
 191                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 192         MX28_PAD_GPMI_D06__GPMI_D6 |
 193                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 194         MX28_PAD_GPMI_D07__GPMI_D7 |
 195                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 196         MX28_PAD_GPMI_CE0N__GPMI_CE0N |
 197                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 198         MX28_PAD_GPMI_RDY0__GPMI_READY0 |
 199                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL),
 200         MX28_PAD_GPMI_RDN__GPMI_RDN |
 201                 (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP),
 202         MX28_PAD_GPMI_WRN__GPMI_WRN |
 203                 (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP),
 204         MX28_PAD_GPMI_ALE__GPMI_ALE |
 205                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_PULLUP),
 206         MX28_PAD_GPMI_CLE__GPMI_CLE |
 207                 (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_PULLUP),
 208         MX28_PAD_GPMI_RESETN__GPMI_RESETN |
 209                 (MXS_PAD_12MA | MXS_PAD_1V8 | MXS_PAD_PULLUP),
 210
 211         /* Backlight */
 212         MX28_PAD_PWM3__GPIO_3_28 | MXS_PAD_CTRL,
 213 };
 214
 215 /* led */
 216 static const struct gpio_led m28evk_leds[] __initconst = {
 217         {
 218                 .name = "user-led1",
 219                 .default_trigger = "heartbeat",
 220                 .gpio = M28EVK_GPIO_USERLED1,
 221         },
 222         {
 223                 .name = "user-led2",
 224                 .default_trigger = "heartbeat",
 225                 .gpio = M28EVK_GPIO_USERLED2,
 226         },
 227 };
 228
 229 static const struct gpio_led_platform_data m28evk_led_data __initconst = {
 230         .leds = m28evk_leds,
 231         .num_leds = ARRAY_SIZE(m28evk_leds),
 232 };
 233
 234 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
 235         {
 236                 /* fec0 */
 237                 .phy = PHY_INTERFACE_MODE_RMII,
 238         }, {
 239                 /* fec1 */
 240                 .phy = PHY_INTERFACE_MODE_RMII,
 241         },
 242 };
 243
 244 static int __init m28evk_fec_get_mac(void)
 245 {
 246         int i;
 247         u32 val;
 248         const u32 *ocotp = mxs_get_ocotp();
 249
 250         if (!ocotp)
 251                 return -ETIMEDOUT;
 252
 253         /*
 254          * OCOTP only stores the last 4 octets for each mac address,
 255          * so hard-code DENX OUI (C0:E5:4E) here.
 256          */
 257         for (i = 0; i < 2; i++) {
 258                 val = ocotp[i];
 259                 mx28_fec_pdata[i].mac[0] = 0xC0;
 260                 mx28_fec_pdata[i].mac[1] = 0xE5;
 261                 mx28_fec_pdata[i].mac[2] = 0x4E;
 262                 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
 263                 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
 264                 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
 265         }
 266
 267         return 0;
 268 }
 269
 270 /* mxsfb (lcdif) */
 271 static struct fb_videomode m28evk_video_modes[] = {
 272         {
 273                 .name           = "Ampire AM-800480R2TMQW-T01H",
 274                 .refresh        = 60,
 275                 .xres           = 800,
 276                 .yres           = 480,
 277                 .pixclock       = 30066, /* picosecond (33.26 MHz) */
 278                 .left_margin    = 0,
 279                 .right_margin   = 256,
 280                 .upper_margin   = 0,
 281                 .lower_margin   = 45,
 282                 .hsync_len      = 1,
 283                 .vsync_len      = 1,
 284                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 285         },
 286 };
 287
 288 static const struct mxsfb_platform_data m28evk_mxsfb_pdata __initconst = {
 289         .mode_list      = m28evk_video_modes,
 290         .mode_count     = ARRAY_SIZE(m28evk_video_modes),
 291         .default_bpp    = 16,
 292         .ld_intf_width  = STMLCDIF_18BIT,
 293 };
 294
 295 static struct at24_platform_data m28evk_eeprom = {
 296         .byte_len = 16384,
 297         .page_size = 32,
 298         .flags = AT24_FLAG_ADDR16,
 299 };
 300
 301 static struct i2c_board_info m28_stk5v3_i2c_boardinfo[] __initdata = {
 302         {
 303                 I2C_BOARD_INFO("at24", 0x51),   /* E0=1, E1=0, E2=0 */
 304                 .platform_data = &m28evk_eeprom,
 305         },
 306 };
 307
 308 static struct mxs_mmc_platform_data m28evk_mmc_pdata[] __initdata = {
 309         {
 310                 /* mmc0 */
 311                 .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT,
 312                 .flags = SLOTF_8_BIT_CAPABLE,
 313         }, {
 314                 /* mmc1 */
 315                 .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT,
 316                 .flags = SLOTF_8_BIT_CAPABLE,
 317         },
 318 };
 319
 320 static void __init m28evk_init(void)
 321 {
 322         mx28_soc_init();
 323
 324         mxs_iomux_setup_multiple_pads(m28evk_pads, ARRAY_SIZE(m28evk_pads));
 325
 326         mx28_add_duart();
 327         mx28_add_auart0();
 328         mx28_add_auart3();
 329
 330         if (!m28evk_fec_get_mac()) {
 331                 mx28_add_fec(0, &mx28_fec_pdata[0]);
 332                 mx28_add_fec(1, &mx28_fec_pdata[1]);
 333         }
 334
 335         mx28_add_flexcan(0, NULL);
 336         mx28_add_flexcan(1, NULL);
 337
 338         mx28_add_mxsfb(&m28evk_mxsfb_pdata);
 339
 340         mx28_add_mxs_mmc(0, &m28evk_mmc_pdata[0]);
 341         mx28_add_mxs_mmc(1, &m28evk_mmc_pdata[1]);
 342
 343         gpio_led_register_device(0, &m28evk_led_data);
 344
 345         /* I2C */
 346         mx28_add_mxs_i2c(0);
 347         i2c_register_board_info(0, m28_stk5v3_i2c_boardinfo,
 348                         ARRAY_SIZE(m28_stk5v3_i2c_boardinfo));
 349 }
 350
 351 static void __init m28evk_timer_init(void)
 352 {
 353         mx28_clocks_init();
 354 }
 355
 356 static struct sys_timer m28evk_timer = {
 357         .init   = m28evk_timer_init,
 358 };
 359
 360 MACHINE_START(M28EVK, "DENX M28 EVK")
 361         .map_io         = mx28_map_io,
 362         .init_irq       = mx28_init_irq,
 363         .timer          = &m28evk_timer,
 364         .init_machine   = m28evk_init,
 365         .restart        = mxs_restart,
 366 MACHINE_END