1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2013-2019
4 * NVIDIA Corporation <www.nvidia.com>
5 */
6
7#include <common.h>
8#include <i2c.h>
9#include <log.h>
10#include <asm/arch/gpio.h>
11#include <asm/arch/pinmux.h>
12#include "../p2571/max77620_init.h"
13
14void pin_mux_mmc(void)
15{
16	struct udevice *dev;
17	uchar val;
18	int ret;
19
20	/* Turn on MAX77620 LDO2 to 3.3V for SD card power */
21	debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
22	ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
23	if (ret) {
24		printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
25		return;
26	}
27	/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
28	val = 0xF2;
29	ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
30	if (ret)
31		printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
32}
33