1 /*
2 * (C) Copyright 2013-2015
3 * NVIDIA Corporation <www.nvidia.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <i2c.h>
10 #include <asm/arch/gpio.h>
11 #include <asm/arch/pinmux.h>
12 #include <asm/gpio.h>
13 #include "max77620_init.h"
14 #include "pinmux-config-p2571.h"
15
pin_mux_mmc(void)16 void pin_mux_mmc(void)
17 {
18 struct udevice *dev;
19 uchar val;
20 int ret;
21
22 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
23 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
24 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
25 if (ret) {
26 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
27 return;
28 }
29 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
30 val = 0xF2;
31 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
32 if (ret)
33 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
34 }
35
36 /*
37 * Routine: pinmux_init
38 * Description: Do individual peripheral pinmux configs
39 */
pinmux_init(void)40 void pinmux_init(void)
41 {
42 pinmux_clear_tristate_input_clamping();
43
44 gpio_config_table(p2571_gpio_inits,
45 ARRAY_SIZE(p2571_gpio_inits));
46
47 pinmux_config_pingrp_table(p2571_pingrps,
48 ARRAY_SIZE(p2571_pingrps));
49
50 pinmux_config_drvgrp_table(p2571_drvgrps,
51 ARRAY_SIZE(p2571_drvgrps));
52 }
53
54 /*
55 * Routine: start_cpu_fan
56 * Description: Enable/start PWM CPU fan on P2571
57 */
start_cpu_fan(void)58 void start_cpu_fan(void)
59 {
60 /* GPIO_PE4 is PS_VDD_FAN_ENABLE */
61 gpio_request(TEGRA_GPIO(E, 4), "FAN_VDD");
62 gpio_direction_output(TEGRA_GPIO(E, 4), 1);
63 }
64