1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * (C) Copyright 2013-2019 4 * NVIDIA Corporation <www.nvidia.com> 5 */ 6 7#include <common.h> 8#include <i2c.h> 9#include <log.h> 10#include <asm/arch/gpio.h> 11#include <asm/arch/pinmux.h> 12#include "../p2571/max77620_init.h" 13 14void pin_mux_mmc(void) 15{ 16 struct udevice *dev; 17 uchar val; 18 int ret; 19 20 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */ 21 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__); 22 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 23 if (ret) { 24 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 25 return; 26 } 27 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 28 val = 0xF2; 29 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1); 30 if (ret) 31 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret); 32} 33