1 /* 2 * Copyright (c) 2016, NVIDIA CORPORATION 3 * 4 * SPDX-License-Identifier: GPL-2.0 5 */ 6 7 #include <common.h> 8 #include <i2c.h> 9 #include "../p2571/max77620_init.h" 10 11 int tegra_board_init(void) 12 { 13 struct udevice *dev; 14 uchar val; 15 int ret; 16 17 /* Turn on MAX77620 LDO3 to 3.3V for SD card power */ 18 debug("%s: Set LDO3 for VDDIO_SDMMC_AP power to 3.3V\n", __func__); 19 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 20 if (ret) { 21 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 22 return ret; 23 } 24 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 25 val = 0xF2; 26 ret = dm_i2c_write(dev, MAX77620_CNFG1_L3_REG, &val, 1); 27 if (ret) { 28 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret); 29 return ret; 30 } 31 32 return 0; 33 } 34 35 int tegra_pcie_board_init(void) 36 { 37 struct udevice *dev; 38 uchar val; 39 int ret; 40 41 /* Turn on MAX77620 LDO7 to 1.05V for PEX power */ 42 debug("%s: Set LDO7 for PEX power to 1.05V\n", __func__); 43 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 44 if (ret) { 45 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 46 return -1; 47 } 48 /* 0xC5 for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 49 val = 0xC5; 50 ret = dm_i2c_write(dev, MAX77620_CNFG1_L7_REG, &val, 1); 51 if (ret) 52 printf("i2c_write 0 0x3c 0x31 failed: %d\n", ret); 53 54 return 0; 55 } 56