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