1 /* 2 * Copyright (C) 2012 Lucas Stach 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <asm/arch/clock.h> 9 #include <asm/arch/funcmux.h> 10 #include <asm/arch/pinmux.h> 11 #include <asm/arch-tegra/ap.h> 12 #include <asm/arch-tegra/board.h> 13 #include <asm/arch-tegra/tegra.h> 14 #include <asm/gpio.h> 15 #include <asm/io.h> 16 #include <i2c.h> 17 18 #define PMU_I2C_ADDRESS 0x34 19 #define MAX_I2C_RETRY 3 20 #define PMU_SUPPLYENE 0x14 21 #define PMU_SUPPLYENE_SYSINEN (1<<5) 22 #define PMU_SUPPLYENE_EXITSLREQ (1<<1) 23 24 int arch_misc_init(void) 25 { 26 /* Disable PMIC sleep mode on low supply voltage */ 27 struct udevice *dev; 28 u8 addr, data[1]; 29 int err; 30 31 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev); 32 if (err) { 33 debug("%s: Cannot find PMIC I2C chip\n", __func__); 34 return err; 35 } 36 37 addr = PMU_SUPPLYENE; 38 39 err = dm_i2c_read(dev, addr, data, 1); 40 if (err) { 41 debug("failed to get PMU_SUPPLYENE\n"); 42 return err; 43 } 44 45 data[0] &= ~PMU_SUPPLYENE_SYSINEN; 46 data[0] |= PMU_SUPPLYENE_EXITSLREQ; 47 48 err = dm_i2c_write(dev, addr, data, 1); 49 if (err) { 50 debug("failed to set PMU_SUPPLYENE\n"); 51 return err; 52 } 53 54 /* make sure SODIMM pin 87 nRESET_OUT is released properly */ 55 pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI); 56 57 if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) == 58 NVBOOTTYPE_RECOVERY) 59 printf("USB recovery mode\n"); 60 61 return 0; 62 } 63 64 #ifdef CONFIG_TEGRA_MMC 65 /* 66 * Routine: pin_mux_mmc 67 * Description: setup the pin muxes/tristate values for the SDMMC(s) 68 */ 69 void pin_mux_mmc(void) 70 { 71 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT); 72 pinmux_tristate_disable(PMUX_PINGRP_GMB); 73 } 74 #endif 75 76 #ifdef CONFIG_TEGRA_NAND 77 void pin_mux_nand(void) 78 { 79 funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_NDFLASH_KBC_8_BIT); 80 81 /* 82 * configure pingroup ATC to something unrelated to 83 * avoid ATC overriding KBC 84 */ 85 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_GMI); 86 } 87 #endif 88 89 #ifdef CONFIG_USB_EHCI_TEGRA 90 void pin_mux_usb(void) 91 { 92 /* module internal USB bus to connect ethernet chipset */ 93 funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI); 94 95 /* ULPI reference clock output */ 96 pinmux_set_func(PMUX_PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4); 97 pinmux_tristate_disable(PMUX_PINGRP_CDEV2); 98 99 /* PHY reset GPIO */ 100 pinmux_tristate_disable(PMUX_PINGRP_UAC); 101 102 /* VBus GPIO */ 103 pinmux_tristate_disable(PMUX_PINGRP_DTE); 104 105 /* Reset ASIX using LAN_RESET */ 106 gpio_request(GPIO_PV4, "LAN_RESET"); 107 gpio_direction_output(GPIO_PV4, 0); 108 pinmux_tristate_disable(PMUX_PINGRP_GPV); 109 udelay(5); 110 gpio_set_value(GPIO_PV4, 1); 111 112 /* USBH_PEN: USB 1 aka Tegra USB port 3 VBus */ 113 pinmux_tristate_disable(PMUX_PINGRP_SPIG); 114 } 115 #endif 116 117 #ifdef CONFIG_VIDEO_TEGRA20 118 /* 119 * Routine: pin_mux_display 120 * Description: setup the pin muxes/tristate values for the LCD interface) 121 */ 122 void pin_mux_display(void) 123 { 124 /* 125 * Manually untristate BL_ON (PT4 - SODIMM 71) as specified through 126 * device-tree 127 */ 128 pinmux_tristate_disable(PMUX_PINGRP_DTA); 129 130 pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM); 131 pinmux_tristate_disable(PMUX_PINGRP_SDC); 132 } 133 #endif 134