1 /* 2 * (C) Copyright 2010-2013 3 * NVIDIA Corporation <www.nvidia.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <asm/arch/pinmux.h> 11 #include <asm/arch/gp_padctrl.h> 12 #include <asm/arch/gpio.h> 13 #include <asm/gpio.h> 14 #include "pinmux-config-cardhu.h" 15 #include <i2c.h> 16 17 #define PMU_I2C_ADDRESS 0x2D 18 #define MAX_I2C_RETRY 3 19 20 /* 21 * Routine: pinmux_init 22 * Description: Do individual peripheral pinmux configs 23 */ 24 void pinmux_init(void) 25 { 26 pinmux_config_pingrp_table(tegra3_pinmux_common, 27 ARRAY_SIZE(tegra3_pinmux_common)); 28 29 pinmux_config_pingrp_table(unused_pins_lowpower, 30 ARRAY_SIZE(unused_pins_lowpower)); 31 32 /* Initialize any non-default pad configs (APB_MISC_GP regs) */ 33 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl)); 34 } 35 36 #if defined(CONFIG_MMC_SDHCI_TEGRA) 37 /* 38 * Do I2C/PMU writes to bring up SD card bus power 39 * 40 */ 41 void board_sdmmc_voltage_init(void) 42 { 43 struct udevice *dev; 44 uchar reg, data_buffer[1]; 45 int ret; 46 int i; 47 48 ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev); 49 if (ret) { 50 debug("%s: Cannot find PMIC I2C chip\n", __func__); 51 return; 52 } 53 54 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */ 55 data_buffer[0] = 0x65; 56 reg = 0x32; 57 58 for (i = 0; i < MAX_I2C_RETRY; ++i) { 59 if (dm_i2c_write(dev, reg, data_buffer, 1)) 60 udelay(100); 61 } 62 63 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */ 64 data_buffer[0] = 0x09; 65 reg = 0x67; 66 67 for (i = 0; i < MAX_I2C_RETRY; ++i) { 68 if (dm_i2c_write(dev, reg, data_buffer, 1)) 69 udelay(100); 70 } 71 } 72 73 /* 74 * Routine: pin_mux_mmc 75 * Description: setup the MMC muxes, power rails, etc. 76 */ 77 void pin_mux_mmc(void) 78 { 79 /* 80 * NOTE: We don't do mmc-specific pin muxes here. 81 * They were done globally in pinmux_init(). 82 */ 83 84 /* Bring up the SDIO1 power rail */ 85 board_sdmmc_voltage_init(); 86 } 87 #endif /* MMC */ 88 89 #ifdef CONFIG_PCI_TEGRA 90 int tegra_pcie_board_init(void) 91 { 92 struct udevice *dev; 93 u8 addr, data[1]; 94 int err; 95 96 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev); 97 if (err) { 98 debug("failed to find PMU bus\n"); 99 return err; 100 } 101 102 /* TPS659110: LDO1_REG = 1.05V, ACTIVE */ 103 data[0] = 0x15; 104 addr = 0x30; 105 106 err = dm_i2c_write(dev, addr, data, 1); 107 if (err) { 108 debug("failed to set VDD supply\n"); 109 return err; 110 } 111 112 /* GPIO: PEX = 3.3V */ 113 err = gpio_request(TEGRA_GPIO(L, 7), "PEX"); 114 if (err < 0) 115 return err; 116 117 gpio_direction_output(TEGRA_GPIO(L, 7), 1); 118 119 /* TPS659110: LDO2_REG = 1.05V, ACTIVE */ 120 data[0] = 0x15; 121 addr = 0x31; 122 123 err = dm_i2c_write(dev, addr, data, 1); 124 if (err) { 125 debug("failed to set AVDD supply\n"); 126 return err; 127 } 128 129 return 0; 130 } 131 #endif /* PCI */ 132