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 "pinmux-config-cardhu.h" 13 #include <i2c.h> 14 15 #define PMU_I2C_ADDRESS 0x2D 16 #define MAX_I2C_RETRY 3 17 18 /* 19 * Routine: pinmux_init 20 * Description: Do individual peripheral pinmux configs 21 */ 22 void pinmux_init(void) 23 { 24 pinmux_config_pingrp_table(tegra3_pinmux_common, 25 ARRAY_SIZE(tegra3_pinmux_common)); 26 27 pinmux_config_pingrp_table(unused_pins_lowpower, 28 ARRAY_SIZE(unused_pins_lowpower)); 29 30 /* Initialize any non-default pad configs (APB_MISC_GP regs) */ 31 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl)); 32 } 33 34 #if defined(CONFIG_TEGRA_MMC) 35 /* 36 * Do I2C/PMU writes to bring up SD card bus power 37 * 38 */ 39 void board_sdmmc_voltage_init(void) 40 { 41 struct udevice *dev; 42 uchar reg, data_buffer[1]; 43 int ret; 44 int i; 45 46 ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev); 47 if (ret) { 48 debug("%s: Cannot find PMIC I2C chip\n", __func__); 49 return; 50 } 51 52 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */ 53 data_buffer[0] = 0x65; 54 reg = 0x32; 55 56 for (i = 0; i < MAX_I2C_RETRY; ++i) { 57 if (i2c_write(dev, reg, data_buffer, 1)) 58 udelay(100); 59 } 60 61 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */ 62 data_buffer[0] = 0x09; 63 reg = 0x67; 64 65 for (i = 0; i < MAX_I2C_RETRY; ++i) { 66 if (i2c_write(dev, reg, data_buffer, 1)) 67 udelay(100); 68 } 69 } 70 71 /* 72 * Routine: pin_mux_mmc 73 * Description: setup the MMC muxes, power rails, etc. 74 */ 75 void pin_mux_mmc(void) 76 { 77 /* 78 * NOTE: We don't do mmc-specific pin muxes here. 79 * They were done globally in pinmux_init(). 80 */ 81 82 /* Bring up the SDIO1 power rail */ 83 board_sdmmc_voltage_init(); 84 } 85 #endif /* MMC */ 86