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 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 */ 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 */ 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