// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2013-2019 * NVIDIA Corporation */ #include #include #include #include #include #include "../p2571/max77620_init.h" void pin_mux_mmc(void) { struct udevice *dev; uchar val; int ret; /* Turn on MAX77620 LDO2 to 3.3V for SD card power */ debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__); ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); if (ret) { printf("%s: Cannot find MAX77620 I2C chip\n", __func__); return; } /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ val = 0xF2; ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1); if (ret) printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret); }