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 #include <netdev.h> 17 18 #define PMU_I2C_ADDRESS 0x2D 19 #define MAX_I2C_RETRY 3 20 21 /* 22 * Routine: pinmux_init 23 * Description: Do individual peripheral pinmux configs 24 */ 25 void pinmux_init(void) 26 { 27 pinmux_config_pingrp_table(tegra3_pinmux_common, 28 ARRAY_SIZE(tegra3_pinmux_common)); 29 30 pinmux_config_pingrp_table(unused_pins_lowpower, 31 ARRAY_SIZE(unused_pins_lowpower)); 32 33 /* Initialize any non-default pad configs (APB_MISC_GP regs) */ 34 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl)); 35 } 36 37 #if defined(CONFIG_TEGRA_MMC) 38 /* 39 * Do I2C/PMU writes to bring up SD card bus power 40 * 41 */ 42 void board_sdmmc_voltage_init(void) 43 { 44 struct udevice *dev; 45 uchar reg, data_buffer[1]; 46 int ret; 47 int i; 48 49 ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev); 50 if (ret) { 51 debug("%s: Cannot find PMIC I2C chip\n", __func__); 52 return; 53 } 54 55 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */ 56 data_buffer[0] = 0x65; 57 reg = 0x32; 58 59 for (i = 0; i < MAX_I2C_RETRY; ++i) { 60 if (i2c_write(dev, reg, data_buffer, 1)) 61 udelay(100); 62 } 63 64 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */ 65 data_buffer[0] = 0x09; 66 reg = 0x67; 67 68 for (i = 0; i < MAX_I2C_RETRY; ++i) { 69 if (i2c_write(dev, reg, data_buffer, 1)) 70 udelay(100); 71 } 72 } 73 74 /* 75 * Routine: pin_mux_mmc 76 * Description: setup the MMC muxes, power rails, etc. 77 */ 78 void pin_mux_mmc(void) 79 { 80 /* 81 * NOTE: We don't do mmc-specific pin muxes here. 82 * They were done globally in pinmux_init(). 83 */ 84 85 /* Bring up the SDIO1 power rail */ 86 board_sdmmc_voltage_init(); 87 } 88 #endif /* MMC */ 89 90 #ifdef CONFIG_PCI_TEGRA 91 int tegra_pcie_board_init(void) 92 { 93 struct udevice *dev; 94 u8 addr, data[1]; 95 int err; 96 97 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev); 98 if (err) { 99 debug("failed to find PMU bus\n"); 100 return err; 101 } 102 103 /* TPS659110: LDO1_REG = 1.05V, ACTIVE */ 104 data[0] = 0x15; 105 addr = 0x30; 106 107 err = i2c_write(dev, addr, data, 1); 108 if (err) { 109 debug("failed to set VDD supply\n"); 110 return err; 111 } 112 113 /* GPIO: PEX = 3.3V */ 114 err = gpio_request(GPIO_PL7, "PEX"); 115 if (err < 0) 116 return err; 117 118 gpio_direction_output(GPIO_PL7, 1); 119 120 /* TPS659110: LDO2_REG = 1.05V, ACTIVE */ 121 data[0] = 0x15; 122 addr = 0x31; 123 124 err = i2c_write(dev, addr, data, 1); 125 if (err) { 126 debug("failed to set AVDD supply\n"); 127 return err; 128 } 129 130 return 0; 131 } 132 133 int board_eth_init(bd_t *bis) 134 { 135 return pci_eth_init(bis); 136 } 137 #endif /* PCI */ 138