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 <asm/arch/pinmux.h> 10 #include <asm/arch/gp_padctrl.h> 11 #include "pinmux-config-cardhu.h" 12 #include <i2c.h> 13 14 #define PMU_I2C_ADDRESS 0x2D 15 #define MAX_I2C_RETRY 3 16 17 /* 18 * Routine: pinmux_init 19 * Description: Do individual peripheral pinmux configs 20 */ 21 void pinmux_init(void) 22 { 23 pinmux_config_pingrp_table(tegra3_pinmux_common, 24 ARRAY_SIZE(tegra3_pinmux_common)); 25 26 pinmux_config_pingrp_table(unused_pins_lowpower, 27 ARRAY_SIZE(unused_pins_lowpower)); 28 29 /* Initialize any non-default pad configs (APB_MISC_GP regs) */ 30 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl)); 31 } 32 33 #if defined(CONFIG_TEGRA_MMC) 34 /* 35 * Do I2C/PMU writes to bring up SD card bus power 36 * 37 */ 38 void board_sdmmc_voltage_init(void) 39 { 40 uchar reg, data_buffer[1]; 41 int i; 42 43 i2c_set_bus_num(0); /* PMU is on bus 0 */ 44 45 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */ 46 data_buffer[0] = 0x65; 47 reg = 0x32; 48 49 for (i = 0; i < MAX_I2C_RETRY; ++i) { 50 if (i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1)) 51 udelay(100); 52 } 53 54 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */ 55 data_buffer[0] = 0x09; 56 reg = 0x67; 57 58 for (i = 0; i < MAX_I2C_RETRY; ++i) { 59 if (i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1)) 60 udelay(100); 61 } 62 } 63 64 /* 65 * Routine: pin_mux_mmc 66 * Description: setup the MMC muxes, power rails, etc. 67 */ 68 void pin_mux_mmc(void) 69 { 70 /* 71 * NOTE: We don't do mmc-specific pin muxes here. 72 * They were done globally in pinmux_init(). 73 */ 74 75 /* Bring up the SDIO1 power rail */ 76 board_sdmmc_voltage_init(); 77 } 78 #endif /* MMC */ 79