1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2012 Lucas Stach 4 */ 5 6 #include <common.h> 7 #include <asm/arch/clock.h> 8 #include <asm/arch/funcmux.h> 9 #include <asm/arch/pinmux.h> 10 #include <asm/arch-tegra/ap.h> 11 #include <asm/arch-tegra/board.h> 12 #include <asm/arch-tegra/tegra.h> 13 #include <asm/gpio.h> 14 #include <asm/io.h> 15 #include <i2c.h> 16 #include <nand.h> 17 #include "../common/tdx-common.h" 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 #define PMU_I2C_ADDRESS 0x34 22 #define MAX_I2C_RETRY 3 23 #define PMU_SUPPLYENE 0x14 24 #define PMU_SUPPLYENE_SYSINEN (1<<5) 25 #define PMU_SUPPLYENE_EXITSLREQ (1<<1) 26 27 int arch_misc_init(void) 28 { 29 /* Disable PMIC sleep mode on low supply voltage */ 30 struct udevice *dev; 31 u8 addr, data[1]; 32 int err; 33 34 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev); 35 if (err) { 36 debug("%s: Cannot find PMIC I2C chip\n", __func__); 37 return err; 38 } 39 40 addr = PMU_SUPPLYENE; 41 42 err = dm_i2c_read(dev, addr, data, 1); 43 if (err) { 44 debug("failed to get PMU_SUPPLYENE\n"); 45 return err; 46 } 47 48 data[0] &= ~PMU_SUPPLYENE_SYSINEN; 49 data[0] |= PMU_SUPPLYENE_EXITSLREQ; 50 51 err = dm_i2c_write(dev, addr, data, 1); 52 if (err) { 53 debug("failed to set PMU_SUPPLYENE\n"); 54 return err; 55 } 56 57 /* make sure SODIMM pin 87 nRESET_OUT is released properly */ 58 pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI); 59 60 if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) == 61 NVBOOTTYPE_RECOVERY) 62 printf("USB recovery mode\n"); 63 64 return 0; 65 } 66 67 int checkboard(void) 68 { 69 printf("Model: Toradex Colibri T20 %dMB V%s\n", 70 (gd->ram_size == 0x10000000) ? 256 : 512, 71 (get_nand_dev_by_index(0)->erasesize >> 10 == 512) ? 72 ((gd->ram_size == 0x10000000) ? "1.1B" : "1.1C") : "1.2A"); 73 74 return 0; 75 } 76 77 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) 78 int ft_board_setup(void *blob, bd_t *bd) 79 { 80 return ft_common_board_setup(blob, bd); 81 } 82 #endif 83 84 #ifdef CONFIG_MMC_SDHCI_TEGRA 85 /* 86 * Routine: pin_mux_mmc 87 * Description: setup the pin muxes/tristate values for the SDMMC(s) 88 */ 89 void pin_mux_mmc(void) 90 { 91 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT); 92 pinmux_tristate_disable(PMUX_PINGRP_GMB); 93 } 94 #endif 95 96 #ifdef CONFIG_TEGRA_NAND 97 void pin_mux_nand(void) 98 { 99 funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_NDFLASH_KBC_8_BIT); 100 101 /* 102 * configure pingroup ATC to something unrelated to 103 * avoid ATC overriding KBC 104 */ 105 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_GMI); 106 } 107 #endif 108 109 #ifdef CONFIG_USB_EHCI_TEGRA 110 void pin_mux_usb(void) 111 { 112 /* module internal USB bus to connect ethernet chipset */ 113 funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI); 114 115 /* ULPI reference clock output */ 116 pinmux_set_func(PMUX_PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4); 117 pinmux_tristate_disable(PMUX_PINGRP_CDEV2); 118 119 /* PHY reset GPIO */ 120 pinmux_tristate_disable(PMUX_PINGRP_UAC); 121 122 /* VBus GPIO */ 123 pinmux_tristate_disable(PMUX_PINGRP_DTE); 124 125 /* Reset ASIX using LAN_RESET */ 126 gpio_request(TEGRA_GPIO(V, 4), "LAN_RESET"); 127 gpio_direction_output(TEGRA_GPIO(V, 4), 0); 128 pinmux_tristate_disable(PMUX_PINGRP_GPV); 129 udelay(5); 130 gpio_set_value(TEGRA_GPIO(V, 4), 1); 131 132 /* USBH_PEN: USB 1 aka Tegra USB port 3 VBus */ 133 pinmux_tristate_disable(PMUX_PINGRP_SPIG); 134 } 135 #endif 136 137 #ifdef CONFIG_VIDEO_TEGRA20 138 /* 139 * Routine: pin_mux_display 140 * Description: setup the pin muxes/tristate values for the LCD interface) 141 */ 142 void pin_mux_display(void) 143 { 144 /* 145 * Manually untristate BL_ON (PT4 - SODIMM 71) as specified through 146 * device-tree 147 */ 148 pinmux_tristate_disable(PMUX_PINGRP_DTA); 149 150 pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM); 151 pinmux_tristate_disable(PMUX_PINGRP_SDC); 152 } 153 154 /* 155 * Backlight off before OS handover 156 */ 157 void board_preboot_os(void) 158 { 159 gpio_request(TEGRA_GPIO(T, 4), "BL_ON"); 160 gpio_direction_output(TEGRA_GPIO(T, 4), 0); 161 } 162 #endif 163