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 DISP_ON high to enable LCD output*/ 180 gpio_direction_output(97, 1); 181 182 /* Set the RESETOUTn low */ 183 gpio_direction_output(111, 0); 184 185 /* Set U0_SW0 low for UART0 as console*/ 186 gpio_direction_output(106, 0); 187 188 /* Set U0_SW1 low for UART0 as console*/ 189 gpio_direction_output(108, 0); 190 191 /* Set LCD_B_PWR low to power down LCD Backlight*/ 192 gpio_direction_output(102, 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]); 252 253 254 return 0; 255 } 256 257 /* 258 * Do not overwrite the console 259 * Use always serial for U-Boot console 260 */ 261 int overwrite_console(void) 262 { 263 return 1; 264 } 265 266 int board_init(void) 267 { 268 /* arch number of the board */ 269 gd->bd->bi_arch_number = MACH_TYPE_EA20; 270 271 /* address of boot parameters */ 272 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; 273 274 da8xx_video_init(&lcd_panel, 16); 275 276 return 0; 277 } 278 279 #ifdef CONFIG_BOARD_LATE_INIT 280 281 int board_late_init(void) 282 { 283 unsigned char buf[2]; 284 int ret; 285 286 /* PinMux for HALTEN */ 287 if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0) 288 return 1; 289 290 /* Set HALTEN to high */ 291 gpio_direction_output(134, 1); 292 293 /* Set fixed contrast settings for LCD via I2C potentiometer */ 294 buf[0] = 0x00; 295 buf[1] = 0xd7; 296 ret = i2c_write(0x2e, 6, 1, buf, 2); 297 if (ret) 298 puts("\nContrast Settings FAILED\n"); 299 300 /* Set LCD_B_PWR high to power up LCD Backlight*/ 301 gpio_set_value(102, 1); 302 return 0; 303 } 304 #endif /* CONFIG_BOARD_LATE_INIT */ 305 306 #ifdef CONFIG_DRIVER_TI_EMAC 307 308 /* 309 * Initializes on-board ethernet controllers. 310 */ 311 int board_eth_init(bd_t *bis) 312 { 313 if (!davinci_emac_initialize()) { 314 printf("Error: Ethernet init failed!\n"); 315 return -1; 316 } 317 318 /* 319 * This board has a RMII PHY. However, the MDC line on the SOM 320 * must not be disabled (there is no MII PHY on the 321 * baseboard) via the GPIO2[6], because this pin 322 * disables at the same time the SPI flash. 323 */ 324 325 return 0; 326 } 327 #endif /* CONFIG_DRIVER_TI_EMAC */ 328