1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2014, 2015 O.S. Systems Software LTDA. 4 * Copyright (C) 2014 Kynetics LLC. 5 * Copyright (C) 2014 Revolution Robotics, Inc. 6 * 7 * Author: Otavio Salvador <otavio@ossystems.com.br> 8 */ 9 10 #include <asm/arch/clock.h> 11 #include <asm/arch/iomux.h> 12 #include <asm/arch/imx-regs.h> 13 #include <asm/arch/mx6-pins.h> 14 #include <asm/arch/sys_proto.h> 15 #include <asm/gpio.h> 16 #include <asm/mach-imx/iomux-v3.h> 17 #include <asm/mach-imx/mxc_i2c.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 <i2c.h> 24 #include <mmc.h> 25 #include <usb.h> 26 #include <power/pmic.h> 27 #include <power/max77696_pmic.h> 28 29 DECLARE_GLOBAL_DATA_PTR; 30 31 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ 32 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ 33 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 34 PAD_CTL_LVE) 35 36 #define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \ 37 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ 38 PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ 39 PAD_CTL_LVE) 40 41 #define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ 42 PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ 43 PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ 44 PAD_CTL_ODE | PAD_CTL_SRE_FAST) 45 46 int dram_init(void) 47 { 48 gd->ram_size = imx_ddr_size(); 49 50 return 0; 51 } 52 53 static void setup_iomux_uart(void) 54 { 55 static iomux_v3_cfg_t const uart1_pads[] = { 56 MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL), 57 MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), 58 }; 59 60 imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); 61 } 62 63 static struct fsl_esdhc_cfg usdhc_cfg[1] = { 64 {USDHC2_BASE_ADDR, 0, 0, 0, 1}, 65 }; 66 67 int board_mmc_getcd(struct mmc *mmc) 68 { 69 return 1; /* Assume boot SD always present */ 70 } 71 72 int board_mmc_init(bd_t *bis) 73 { 74 static iomux_v3_cfg_t const usdhc2_pads[] = { 75 MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), 76 MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), 77 MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL), 78 MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 79 MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 80 MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 81 MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 82 MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 83 MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 84 MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 85 MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), 86 }; 87 88 imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); 89 90 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); 91 return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); 92 } 93 94 int board_usb_phy_mode(int port) 95 { 96 return USB_INIT_DEVICE; 97 } 98 99 /* I2C1 for PMIC */ 100 #define I2C_PMIC 0 101 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL) 102 struct i2c_pads_info i2c_pad_info1 = { 103 .sda = { 104 .i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC, 105 .gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC, 106 .gp = IMX_GPIO_NR(3, 13), 107 }, 108 .scl = { 109 .i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC, 110 .gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC, 111 .gp = IMX_GPIO_NR(3, 12), 112 }, 113 }; 114 115 int power_init_board(void) 116 { 117 struct pmic *p; 118 int ret; 119 unsigned int reg; 120 121 ret = power_max77696_init(I2C_PMIC); 122 if (ret) 123 return ret; 124 125 p = pmic_get("MAX77696"); 126 if (!p) 127 return -EINVAL; 128 129 ret = pmic_reg_read(p, CID, ®); 130 if (ret) 131 return ret; 132 133 printf("PMIC: MAX77696 detected, rev=0x%x\n", reg); 134 135 return pmic_probe(p); 136 } 137 138 int board_early_init_f(void) 139 { 140 setup_iomux_uart(); 141 return 0; 142 } 143 144 int board_init(void) 145 { 146 /* address of boot parameters */ 147 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 148 149 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); 150 151 return 0; 152 } 153 154 int board_late_init(void) 155 { 156 #ifdef CONFIG_HW_WATCHDOG 157 hw_watchdog_init(); 158 #endif 159 160 return 0; 161 } 162 163 int checkboard(void) 164 { 165 puts("Board: WaRP Board\n"); 166 167 return 0; 168 } 169