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