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 * SPDX-License-Identifier: GPL-2.0+ 15 */ 16 17 #include <common.h> 18 #include <i2c.h> 19 #include <net.h> 20 #include <netdev.h> 21 #include <asm/arch/hardware.h> 22 #include <asm/arch/emif_defs.h> 23 #include <asm/arch/emac_defs.h> 24 #include <asm/io.h> 25 #include <asm/arch/davinci_misc.h> 26 #include <asm/gpio.h> 27 #include <asm/arch/da8xx-fb.h> 28 29 DECLARE_GLOBAL_DATA_PTR; 30 31 static const struct da8xx_panel lcd_panel = { 32 /* Casio COM57H531x */ 33 .name = "Casio_COM57H531x", 34 .width = 640, 35 .height = 480, 36 .hfp = 12, 37 .hbp = 144, 38 .hsw = 30, 39 .vfp = 10, 40 .vbp = 35, 41 .vsw = 3, 42 .pxl_clk = 25000000, 43 .invert_pxl_clk = 0, 44 }; 45 46 /* SPI0 pin muxer settings */ 47 static const struct pinmux_config spi1_pins[] = { 48 { pinmux(5), 1, 1 }, 49 { pinmux(5), 1, 2 }, 50 { pinmux(5), 1, 4 }, 51 { pinmux(5), 1, 5 } 52 }; 53 54 /* I2C pin muxer settings */ 55 static const struct pinmux_config i2c_pins[] = { 56 { pinmux(4), 2, 2 }, 57 { pinmux(4), 2, 3 } 58 }; 59 60 /* UART0 pin muxer settings */ 61 static const struct pinmux_config uart_pins[] = { 62 { pinmux(3), 2, 7 }, 63 { pinmux(3), 2, 6 }, 64 { pinmux(3), 2, 4 }, 65 { pinmux(3), 2, 5 } 66 }; 67 68 #ifdef CONFIG_DRIVER_TI_EMAC 69 #define HAS_RMII 1 70 static const struct pinmux_config emac_pins[] = { 71 { pinmux(14), 8, 2 }, 72 { pinmux(14), 8, 3 }, 73 { pinmux(14), 8, 4 }, 74 { pinmux(14), 8, 5 }, 75 { pinmux(14), 8, 6 }, 76 { pinmux(14), 8, 7 }, 77 { pinmux(15), 8, 1 }, 78 { pinmux(4), 8, 0 }, 79 { pinmux(4), 8, 1 } 80 }; 81 #endif 82 83 #ifdef CONFIG_NAND_DAVINCI 84 const struct pinmux_config nand_pins[] = { 85 { pinmux(7), 1, 0}, /* CS2 */ 86 { pinmux(7), 0, 1}, /* CS3 in three state*/ 87 { pinmux(7), 1, 4 }, /* EMA_WE */ 88 { pinmux(7), 1, 5 }, /* EMA_OE */ 89 { pinmux(9), 1, 0 }, /* EMA_D[7] */ 90 { pinmux(9), 1, 1 }, /* EMA_D[6] */ 91 { pinmux(9), 1, 2 }, /* EMA_D[5] */ 92 { pinmux(9), 1, 3 }, /* EMA_D[4] */ 93 { pinmux(9), 1, 4 }, /* EMA_D[3] */ 94 { pinmux(9), 1, 5 }, /* EMA_D[2] */ 95 { pinmux(9), 1, 6 }, /* EMA_D[1] */ 96 { pinmux(9), 1, 7 }, /* EMA_D[0] */ 97 { pinmux(12), 1, 5 }, /* EMA_A[2] */ 98 { pinmux(12), 1, 6 }, /* EMA_A[1] */ 99 { pinmux(6), 1, 0 } /* EMA_CLK */ 100 }; 101 #endif 102 103 const struct pinmux_config gpio_pins[] = { 104 { pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/ 105 { pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/ 106 { pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/ 107 { pinmux(19), 8, 5 }, /* GPIO6[1] DISP_ON */ 108 { pinmux(14), 8, 1 } /* GPIO6[6] LCD_B_PWR*/ 109 }; 110 111 const struct pinmux_config lcd_pins[] = { 112 { pinmux(17), 2, 1 }, /* LCD_D_0 */ 113 { pinmux(17), 2, 0 }, /* LCD_D_1 */ 114 { pinmux(16), 2, 7 }, /* LCD_D_2 */ 115 { pinmux(16), 2, 6 }, /* LCD_D_3 */ 116 { pinmux(16), 2, 5 }, /* LCD_D_4 */ 117 { pinmux(16), 2, 4 }, /* LCD_D_5 */ 118 { pinmux(16), 2, 3 }, /* LCD_D_6 */ 119 { pinmux(16), 2, 2 }, /* LCD_D_7 */ 120 { pinmux(18), 2, 1 }, /* LCD_D_8 */ 121 { pinmux(18), 2, 0 }, /* LCD_D_9 */ 122 { pinmux(17), 2, 7 }, /* LCD_D_10 */ 123 { pinmux(17), 2, 6 }, /* LCD_D_11 */ 124 { pinmux(17), 2, 5 }, /* LCD_D_12 */ 125 { pinmux(17), 2, 4 }, /* LCD_D_13 */ 126 { pinmux(17), 2, 3 }, /* LCD_D_14 */ 127 { pinmux(17), 2, 2 }, /* LCD_D_15 */ 128 { pinmux(18), 2, 6 }, /* LCD_PCLK */ 129 { pinmux(19), 2, 0 }, /* LCD_HSYNC */ 130 { pinmux(19), 2, 1 }, /* LCD_VSYNC */ 131 { pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */ 132 }; 133 134 const struct pinmux_config halten_pin[] = { 135 { pinmux(3), 4, 2 } /* GPIO8[6] HALTEN */ 136 }; 137 138 static const struct pinmux_resource pinmuxes[] = { 139 #ifdef CONFIG_SPI_FLASH 140 PINMUX_ITEM(spi1_pins), 141 #endif 142 PINMUX_ITEM(uart_pins), 143 PINMUX_ITEM(i2c_pins), 144 #ifdef CONFIG_NAND_DAVINCI 145 PINMUX_ITEM(nand_pins), 146 #endif 147 #ifdef CONFIG_VIDEO 148 PINMUX_ITEM(lcd_pins), 149 #endif 150 }; 151 152 static const struct lpsc_resource lpsc[] = { 153 { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */ 154 { DAVINCI_LPSC_SPI1 }, /* Serial Flash */ 155 { DAVINCI_LPSC_EMAC }, /* image download */ 156 { DAVINCI_LPSC_UART0 }, /* console */ 157 { DAVINCI_LPSC_GPIO }, 158 { DAVINCI_LPSC_LCDC }, /* LCD */ 159 }; 160 161 int board_early_init_f(void) 162 { 163 /* PinMux for GPIO */ 164 if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0) 165 return 1; 166 167 /* Set DISP_ON high to enable LCD output*/ 168 gpio_direction_output(97, 1); 169 170 /* Set the RESETOUTn low */ 171 gpio_direction_output(111, 0); 172 173 /* Set U0_SW0 low for UART0 as console*/ 174 gpio_direction_output(106, 0); 175 176 /* Set U0_SW1 low for UART0 as console*/ 177 gpio_direction_output(108, 0); 178 179 /* Set LCD_B_PWR low to power down LCD Backlight*/ 180 gpio_direction_output(102, 0); 181 182 #ifndef CONFIG_USE_IRQ 183 irq_init(); 184 #endif 185 186 /* 187 * NAND CS setup - cycle counts based on da850evm NAND timings in the 188 * Linux kernel @ 25MHz EMIFA 189 */ 190 #ifdef CONFIG_NAND_DAVINCI 191 writel((DAVINCI_ABCR_WSETUP(0) | 192 DAVINCI_ABCR_WSTROBE(1) | 193 DAVINCI_ABCR_WHOLD(0) | 194 DAVINCI_ABCR_RSETUP(0) | 195 DAVINCI_ABCR_RSTROBE(1) | 196 DAVINCI_ABCR_RHOLD(0) | 197 DAVINCI_ABCR_TA(0) | 198 DAVINCI_ABCR_ASIZE_8BIT), 199 &davinci_emif_regs->ab1cr); /* CS2 */ 200 #endif 201 202 /* 203 * Power on required peripherals 204 * ARM does not have access by default to PSC0 and PSC1 205 * assuming here that the DSP bootloader has set the IOPU 206 * such that PSC access is available to ARM 207 */ 208 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) 209 return 1; 210 211 /* setup the SUSPSRC for ARM to control emulation suspend */ 212 writel(readl(&davinci_syscfg_regs->suspsrc) & 213 ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C | 214 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 | 215 DAVINCI_SYSCFG_SUSPSRC_UART0), 216 &davinci_syscfg_regs->suspsrc); 217 218 /* configure pinmux settings */ 219 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) 220 return 1; 221 222 #ifdef CONFIG_DRIVER_TI_EMAC 223 if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0) 224 return 1; 225 226 davinci_emac_mii_mode_sel(HAS_RMII); 227 #endif /* CONFIG_DRIVER_TI_EMAC */ 228 229 /* enable the console UART */ 230 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST | 231 DAVINCI_UART_PWREMU_MGMT_UTRST), 232 &davinci_uart0_ctrl_regs->pwremu_mgmt); 233 234 /* 235 * Reconfigure the LCDC priority to the highest to ensure that 236 * the throughput/latency requirements for the LCDC are met. 237 */ 238 writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff, 239 &davinci_syscfg_regs->mstpri[2]); 240 241 242 return 0; 243 } 244 245 /* 246 * Do not overwrite the console 247 * Use always serial for U-Boot console 248 */ 249 int overwrite_console(void) 250 { 251 return 1; 252 } 253 254 int board_init(void) 255 { 256 /* arch number of the board */ 257 gd->bd->bi_arch_number = MACH_TYPE_EA20; 258 259 /* address of boot parameters */ 260 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; 261 262 da8xx_video_init(&lcd_panel, 16); 263 264 return 0; 265 } 266 267 #ifdef CONFIG_BOARD_LATE_INIT 268 269 int board_late_init(void) 270 { 271 unsigned char buf[2]; 272 int ret; 273 274 /* PinMux for HALTEN */ 275 if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0) 276 return 1; 277 278 /* Set HALTEN to high */ 279 gpio_direction_output(134, 1); 280 281 /* Set fixed contrast settings for LCD via I2C potentiometer */ 282 buf[0] = 0x00; 283 buf[1] = 0xd7; 284 ret = i2c_write(0x2e, 6, 1, buf, 2); 285 if (ret) 286 puts("\nContrast Settings FAILED\n"); 287 288 /* Set LCD_B_PWR high to power up LCD Backlight*/ 289 gpio_set_value(102, 1); 290 return 0; 291 } 292 #endif /* CONFIG_BOARD_LATE_INIT */ 293 294 #ifdef CONFIG_DRIVER_TI_EMAC 295 296 /* 297 * Initializes on-board ethernet controllers. 298 */ 299 int board_eth_init(bd_t *bis) 300 { 301 if (!davinci_emac_initialize()) { 302 printf("Error: Ethernet init failed!\n"); 303 return -1; 304 } 305 306 /* 307 * This board has a RMII PHY. However, the MDC line on the SOM 308 * must not be disabled (there is no MII PHY on the 309 * baseboard) via the GPIO2[6], because this pin 310 * disables at the same time the SPI flash. 311 */ 312 313 return 0; 314 } 315 #endif /* CONFIG_DRIVER_TI_EMAC */ 316