110a03382SStephen Warren /* 210a03382SStephen Warren * Copyright (c) 2016, NVIDIA CORPORATION 310a03382SStephen Warren * 410a03382SStephen Warren * SPDX-License-Identifier: GPL-2.0 510a03382SStephen Warren */ 610a03382SStephen Warren 710a03382SStephen Warren #include <common.h> 8*45d85f08SStephen Warren #include <i2c.h> 9*45d85f08SStephen Warren #include "../p2571/max77620_init.h" 10*45d85f08SStephen Warren 11*45d85f08SStephen Warren int tegra_board_init(void) 12*45d85f08SStephen Warren { 13*45d85f08SStephen Warren struct udevice *dev; 14*45d85f08SStephen Warren uchar val; 15*45d85f08SStephen Warren int ret; 16*45d85f08SStephen Warren 17*45d85f08SStephen Warren /* Turn on MAX77620 LDO3 to 3.3V for SD card power */ 18*45d85f08SStephen Warren debug("%s: Set LDO3 for VDDIO_SDMMC_AP power to 3.3V\n", __func__); 19*45d85f08SStephen Warren ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 20*45d85f08SStephen Warren if (ret) { 21*45d85f08SStephen Warren printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 22*45d85f08SStephen Warren return ret; 23*45d85f08SStephen Warren } 24*45d85f08SStephen Warren /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 25*45d85f08SStephen Warren val = 0xF2; 26*45d85f08SStephen Warren ret = dm_i2c_write(dev, MAX77620_CNFG1_L3_REG, &val, 1); 27*45d85f08SStephen Warren if (ret) { 28*45d85f08SStephen Warren printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret); 29*45d85f08SStephen Warren return ret; 30*45d85f08SStephen Warren } 31*45d85f08SStephen Warren 32*45d85f08SStephen Warren return 0; 33*45d85f08SStephen Warren } 34