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/imx-common/mxc_i2c.h> 19 #include <asm/io.h> 20 #include <linux/sizes.h> 21 #include <common.h> 22 #include <watchdog.h> 23 #include <fsl_esdhc.h> 24 #include <i2c.h> 25 #include <mmc.h> 26 #include <usb.h> 27 #include <power/pmic.h> 28 #include <power/max77696_pmic.h> 29 30 DECLARE_GLOBAL_DATA_PTR; 31 32 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 33 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 34 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 35 PAD_CTL_LVE) 36 37 #define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \ 38 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 39 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 40 PAD_CTL_LVE) 41 42 #define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ 43 PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ 44 PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ 45 PAD_CTL_ODE | PAD_CTL_SRE_FAST) 46 47 int dram_init(void) 48 { 49 gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); 50 51 return 0; 52 } 53 54 static void setup_iomux_uart(void) 55 { 56 static iomux_v3_cfg_t const uart1_pads[] = { 57 MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL), 58 MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), 59 }; 60 61 imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); 62 } 63 64 static struct fsl_esdhc_cfg usdhc_cfg[1] = { 65 {USDHC2_BASE_ADDR}, 66 }; 67 68 int board_mmc_getcd(struct mmc *mmc) 69 { 70 return 1; /* Assume boot SD always present */ 71 } 72 73 int board_mmc_init(bd_t *bis) 74 { 75 static iomux_v3_cfg_t const usdhc2_pads[] = { 76 MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), 77 MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), 78 MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL), 79 MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 80 MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 81 MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 82 MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 83 MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 84 MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 85 MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 86 MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 87 }; 88 89 imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); 90 91 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 92 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); 93 } 94 95 int board_usb_phy_mode(int port) 96 { 97 return USB_INIT_DEVICE; 98 } 99 100 /* I2C1 for PMIC */ 101 #define I2C_PMIC 0 102 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL) 103 struct i2c_pads_info i2c_pad_info1 = { 104 .sda = { 105 .i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC, 106 .gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC, 107 .gp = IMX_GPIO_NR(3, 13), 108 }, 109 .scl = { 110 .i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC, 111 .gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC, 112 .gp = IMX_GPIO_NR(3, 12), 113 }, 114 }; 115 116 int power_init_board(void) 117 { 118 struct pmic *p; 119 int ret; 120 unsigned int reg; 121 122 ret = power_max77696_init(I2C_PMIC); 123 if (ret) 124 return ret; 125 126 p = pmic_get("MAX77696"); 127 if (!p) 128 return -EINVAL; 129 130 ret = pmic_reg_read(p, CID, ®); 131 if (ret) 132 return ret; 133 134 printf("PMIC: MAX77696 detected, rev=0x%x\n", reg); 135 136 return pmic_probe(p); 137 } 138 139 int board_early_init_f(void) 140 { 141 setup_iomux_uart(); 142 return 0; 143 } 144 145 int board_init(void) 146 { 147 /* address of boot parameters */ 148 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 149 150 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); 151 152 return 0; 153 } 154 155 int board_late_init(void) 156 { 157 #ifdef CONFIG_HW_WATCHDOG 158 hw_watchdog_init(); 159 #endif 160 161 return 0; 162 } 163 164 int checkboard(void) 165 { 166 puts("Board: WaRP Board\n"); 167 168 return 0; 169 } 170