board/davinci/ea20/ea20.c

   1 /*
   2  * (C) Copyright 2010
   3  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
   4  *
   5  * Based on da850evm.c, original Copyrights follow:
   6  *
   7  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   8  *
   9  * Based on da830evm.c. Original Copyrights follow:
  10  *
  11  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
  12  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <common.h>
  30 #include <i2c.h>
  31 #include <net.h>
  32 #include <netdev.h>
  33 #include <asm/arch/hardware.h>
  34 #include <asm/arch/emif_defs.h>
  35 #include <asm/arch/emac_defs.h>
  36 #include <asm/io.h>
  37 #include <asm/arch/davinci_misc.h>
  38 #include <asm/gpio.h>
  39 #include <asm/arch/da8xx-fb.h>
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 static const struct da8xx_panel lcd_panel = {
  44         /* Casio COM57H531x */
  45         .name = "Casio_COM57H531x",
  46         .width = 640,
  47         .height = 480,
  48         .hfp = 12,
  49         .hbp = 144,
  50         .hsw = 30,
  51         .vfp = 10,
  52         .vbp = 35,
  53         .vsw = 3,
  54         .pxl_clk = 25000000,
  55         .invert_pxl_clk = 0,
  56 };
  57
  58 /* SPI0 pin muxer settings */
  59 static const struct pinmux_config spi1_pins[] = {
  60         { pinmux(5), 1, 1 },
  61         { pinmux(5), 1, 2 },
  62         { pinmux(5), 1, 4 },
  63         { pinmux(5), 1, 5 }
  64 };
  65
  66 /* I2C pin muxer settings */
  67 static const struct pinmux_config i2c_pins[] = {
  68         { pinmux(4), 2, 2 },
  69         { pinmux(4), 2, 3 }
  70 };
  71
  72 /* UART0 pin muxer settings */
  73 static const struct pinmux_config uart_pins[] = {
  74         { pinmux(3), 2, 7 },
  75         { pinmux(3), 2, 6 },
  76         { pinmux(3), 2, 4 },
  77         { pinmux(3), 2, 5 }
  78 };
  79
  80 #ifdef CONFIG_DRIVER_TI_EMAC
  81 #define HAS_RMII 1
  82 static const struct pinmux_config emac_pins[] = {
  83         { pinmux(14), 8, 2 },
  84         { pinmux(14), 8, 3 },
  85         { pinmux(14), 8, 4 },
  86         { pinmux(14), 8, 5 },
  87         { pinmux(14), 8, 6 },
  88         { pinmux(14), 8, 7 },
  89         { pinmux(15), 8, 1 },
  90         { pinmux(4), 8, 0 },
  91         { pinmux(4), 8, 1 }
  92 };
  93 #endif
  94
  95 #ifdef CONFIG_NAND_DAVINCI
  96 const struct pinmux_config nand_pins[] = {
  97         { pinmux(7), 1, 0},     /* CS2 */
  98         { pinmux(7), 0, 1},     /* CS3  in three state*/
  99         { pinmux(7), 1, 4 },    /* EMA_WE */
 100         { pinmux(7), 1, 5 },    /* EMA_OE */
 101         { pinmux(9), 1, 0 },    /* EMA_D[7] */
 102         { pinmux(9), 1, 1 },    /* EMA_D[6] */
 103         { pinmux(9), 1, 2 },    /* EMA_D[5] */
 104         { pinmux(9), 1, 3 },    /* EMA_D[4] */
 105         { pinmux(9), 1, 4 },    /* EMA_D[3] */
 106         { pinmux(9), 1, 5 },    /* EMA_D[2] */
 107         { pinmux(9), 1, 6 },    /* EMA_D[1] */
 108         { pinmux(9), 1, 7 },    /* EMA_D[0] */
 109         { pinmux(12), 1, 5 },   /* EMA_A[2] */
 110         { pinmux(12), 1, 6 },   /* EMA_A[1] */
 111         { pinmux(6), 1, 0 }     /* EMA_CLK */
 112 };
 113 #endif
 114
 115 const struct pinmux_config gpio_pins[] = {
 116         { pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
 117         { pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
 118         { pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
 119         { pinmux(19), 8, 5 }, /* GPIO6[1]  DISP_ON */
 120         { pinmux(14), 8, 1 }  /* GPIO6[6]  LCD_B_PWR*/
 121 };
 122
 123 const struct pinmux_config lcd_pins[] = {
 124         { pinmux(17), 2, 1 }, /* LCD_D_0 */
 125         { pinmux(17), 2, 0 }, /* LCD_D_1 */
 126         { pinmux(16), 2, 7 }, /* LCD_D_2 */
 127         { pinmux(16), 2, 6 }, /* LCD_D_3 */
 128         { pinmux(16), 2, 5 }, /* LCD_D_4 */
 129         { pinmux(16), 2, 4 }, /* LCD_D_5 */
 130         { pinmux(16), 2, 3 }, /* LCD_D_6 */
 131         { pinmux(16), 2, 2 }, /* LCD_D_7 */
 132         { pinmux(18), 2, 1 }, /* LCD_D_8 */
 133         { pinmux(18), 2, 0 }, /* LCD_D_9 */
 134         { pinmux(17), 2, 7 }, /* LCD_D_10 */
 135         { pinmux(17), 2, 6 }, /* LCD_D_11 */
 136         { pinmux(17), 2, 5 }, /* LCD_D_12 */
 137         { pinmux(17), 2, 4 }, /* LCD_D_13 */
 138         { pinmux(17), 2, 3 }, /* LCD_D_14 */
 139         { pinmux(17), 2, 2 }, /* LCD_D_15 */
 140         { pinmux(18), 2, 6 }, /* LCD_PCLK */
 141         { pinmux(19), 2, 0 }, /* LCD_HSYNC */
 142         { pinmux(19), 2, 1 }, /* LCD_VSYNC */
 143         { pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
 144 };
 145
 146 const struct pinmux_config halten_pin[] = {
 147         { pinmux(3),  4, 2 } /* GPIO8[6] HALTEN */
 148 };
 149
 150 static const struct pinmux_resource pinmuxes[] = {
 151 #ifdef CONFIG_SPI_FLASH
 152         PINMUX_ITEM(spi1_pins),
 153 #endif
 154         PINMUX_ITEM(uart_pins),
 155         PINMUX_ITEM(i2c_pins),
 156 #ifdef CONFIG_NAND_DAVINCI
 157         PINMUX_ITEM(nand_pins),
 158 #endif
 159 #ifdef CONFIG_VIDEO
 160         PINMUX_ITEM(lcd_pins),
 161 #endif
 162 };
 163
 164 static const struct lpsc_resource lpsc[] = {
 165         { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
 166         { DAVINCI_LPSC_SPI1 },  /* Serial Flash */
 167         { DAVINCI_LPSC_EMAC },  /* image download */
 168         { DAVINCI_LPSC_UART0 }, /* console */
 169         { DAVINCI_LPSC_GPIO },
 170         { DAVINCI_LPSC_LCDC }, /* LCD */
 171 };
 172
 173 int board_early_init_f(void)
 174 {
 175         /* PinMux for GPIO */
 176         if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
 177                 return 1;
 178
 179         /* Set the RESETOUTn low */
 180         gpio_direction_output(111, 0);
 181
 182         /* Set U0_SW0 low for UART0 as console*/
 183         gpio_direction_output(106, 0);
 184
 185         /* Set U0_SW1 low for UART0 as console*/
 186         gpio_direction_output(108, 0);
 187
 188         /* Set LCD_B_PWR low to power down LCD Backlight*/
 189         gpio_direction_output(102, 0);
 190
 191         /* Set DISP_ON low to disable LCD output*/
 192         gpio_direction_output(97, 0);
 193
 194 #ifndef CONFIG_USE_IRQ
 195         irq_init();
 196 #endif
 197
 198         /*
 199          * NAND CS setup - cycle counts based on da850evm NAND timings in the
 200          * Linux kernel @ 25MHz EMIFA
 201          */
 202 #ifdef CONFIG_NAND_DAVINCI
 203         writel((DAVINCI_ABCR_WSETUP(0) |
 204                 DAVINCI_ABCR_WSTROBE(1) |
 205                 DAVINCI_ABCR_WHOLD(0) |
 206                 DAVINCI_ABCR_RSETUP(0) |
 207                 DAVINCI_ABCR_RSTROBE(1) |
 208                 DAVINCI_ABCR_RHOLD(0) |
 209                 DAVINCI_ABCR_TA(0) |
 210                 DAVINCI_ABCR_ASIZE_8BIT),
 211                &davinci_emif_regs->ab1cr); /* CS2 */
 212 #endif
 213
 214         /*
 215          * Power on required peripherals
 216          * ARM does not have access by default to PSC0 and PSC1
 217          * assuming here that the DSP bootloader has set the IOPU
 218          * such that PSC access is available to ARM
 219          */
 220         if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
 221                 return 1;
 222
 223         /* setup the SUSPSRC for ARM to control emulation suspend */
 224         writel(readl(&davinci_syscfg_regs->suspsrc) &
 225                ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
 226                  DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
 227                  DAVINCI_SYSCFG_SUSPSRC_UART0),
 228                &davinci_syscfg_regs->suspsrc);
 229
 230         /* configure pinmux settings */
 231         if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
 232                 return 1;
 233
 234 #ifdef CONFIG_DRIVER_TI_EMAC
 235         if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
 236                 return 1;
 237
 238         davinci_emac_mii_mode_sel(HAS_RMII);
 239 #endif /* CONFIG_DRIVER_TI_EMAC */
 240
 241         /* enable the console UART */
 242         writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
 243                 DAVINCI_UART_PWREMU_MGMT_UTRST),
 244                &davinci_uart0_ctrl_regs->pwremu_mgmt);
 245
 246         /*
 247          * Reconfigure the LCDC priority to the highest to ensure that
 248          * the throughput/latency requirements for the LCDC are met.
 249          */
 250         writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
 251                &davinci_syscfg_regs->mstpri[2]);
 252
 253         /* Set LCD_B_PWR low to power up LCD Backlight*/
 254         gpio_set_value(102, 1);
 255
 256         /* Set DISP_ON low to disable LCD output*/
 257         gpio_set_value(97, 1);
 258
 259         return 0;
 260 }
 261
 262 int board_init(void)
 263 {
 264         /* arch number of the board */
 265         gd->bd->bi_arch_number = MACH_TYPE_EA20;
 266
 267         /* address of boot parameters */
 268         gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
 269
 270         da8xx_video_init(&lcd_panel, 16);
 271
 272         return 0;
 273 }
 274
 275 #ifdef BOARD_LATE_INIT
 276
 277 int board_late_init(void)
 278 {
 279         /* PinMux for HALTEN */
 280         if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
 281                 return 1;
 282
 283         /* Set HALTEN to high */
 284         gpio_direction_output(134, 1);
 285
 286         setenv("stdout", "serial");
 287
 288         return 0;
 289 }
 290 #endif /* BOARD_LATE_INIT */
 291
 292 #ifdef CONFIG_DRIVER_TI_EMAC
 293
 294 /*
 295  * Initializes on-board ethernet controllers.
 296  */
 297 int board_eth_init(bd_t *bis)
 298 {
 299         if (!davinci_emac_initialize()) {
 300                 printf("Error: Ethernet init failed!\n");
 301                 return -1;
 302         }
 303
 304         /*
 305          * This board has a RMII PHY. However, the MDC line on the SOM
 306          * must not be disabled (there is no MII PHY on the
 307          * baseboard) via the GPIO2[6], because this pin
 308          * disables at the same time the SPI flash.
 309          */
 310
 311         return 0;
 312 }
 313 #endif /* CONFIG_DRIVER_TI_EMAC */