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 <asm/gpio.h>
13 #include "max77620_init.h"
14
pin_mux_mmc(void)15 void pin_mux_mmc(void)
16 {
17 struct udevice *dev;
18 uchar val;
19 int ret;
20
21 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
22 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
23 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
24 if (ret) {
25 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
26 return;
27 }
28 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
29 val = 0xF2;
30 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
31 if (ret)
32 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
33 }
34
35 /*
36 * Routine: start_cpu_fan
37 * Description: Enable/start PWM CPU fan on P2571
38 */
start_cpu_fan(void)39 void start_cpu_fan(void)
40 {
41 /* GPIO_PE4 is PS_VDD_FAN_ENABLE */
42 gpio_request(TEGRA_GPIO(E, 4), "FAN_VDD");
43 gpio_direction_output(TEGRA_GPIO(E, 4), 1);
44 }
45