1 /* 2 * Copyright (C) 2014, 2015 O.S. Systems Software LTDA. 3 * Copyright (C) 2014 Kynetics LLC. 4 * Copyright (C) 2014 Revolution Robotics, Inc. 5 * 6 * Author: Otavio Salvador <otavio@ossystems.com.br> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <asm/arch/clock.h> 12 #include <asm/arch/iomux.h> 13 #include <asm/arch/imx-regs.h> 14 #include <asm/arch/mx6-pins.h> 15 #include <asm/arch/sys_proto.h> 16 #include <asm/gpio.h> 17 #include <asm/imx-common/iomux-v3.h> 18 #include <asm/io.h> 19 #include <linux/sizes.h> 20 #include <common.h> 21 #include <watchdog.h> 22 #include <fsl_esdhc.h> 23 #include <mmc.h> 24 25 DECLARE_GLOBAL_DATA_PTR; 26 27 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 28 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 29 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 30 PAD_CTL_LVE) 31 32 #define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \ 33 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 34 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 35 PAD_CTL_LVE) 36 37 int dram_init(void) 38 { 39 gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); 40 41 return 0; 42 } 43 44 static void setup_iomux_uart(void) 45 { 46 static iomux_v3_cfg_t const uart1_pads[] = { 47 MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL), 48 MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), 49 }; 50 51 imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); 52 } 53 54 static struct fsl_esdhc_cfg usdhc_cfg[1] = { 55 {USDHC2_BASE_ADDR}, 56 }; 57 58 int board_mmc_getcd(struct mmc *mmc) 59 { 60 return 1; /* Assume boot SD always present */ 61 } 62 63 int board_mmc_init(bd_t *bis) 64 { 65 static iomux_v3_cfg_t const usdhc2_pads[] = { 66 MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), 67 MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), 68 MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL), 69 MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 70 MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 71 MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 72 MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 73 MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 74 MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 75 MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 76 MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 77 }; 78 79 imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); 80 81 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 82 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); 83 } 84 85 int board_early_init_f(void) 86 { 87 setup_iomux_uart(); 88 return 0; 89 } 90 91 int board_init(void) 92 { 93 /* address of boot parameters */ 94 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 95 96 return 0; 97 } 98 99 int board_late_init(void) 100 { 101 #ifdef CONFIG_HW_WATCHDOG 102 hw_watchdog_init(); 103 #endif 104 105 return 0; 106 } 107 108 int checkboard(void) 109 { 110 puts("Board: WaRP Board\n"); 111 112 return 0; 113 } 114