1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2013-2015 4 * NVIDIA Corporation <www.nvidia.com> 5 */ 6 7 #include <common.h> 8 #include <i2c.h> 9 #include <asm/arch/gpio.h> 10 #include <asm/arch/pinmux.h> 11 #include <asm/gpio.h> 12 #include "max77620_init.h" 13 #include "pinmux-config-p2571.h" 14 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: pinmux_init 37 * Description: Do individual peripheral pinmux configs 38 */ 39 void pinmux_init(void) 40 { 41 pinmux_clear_tristate_input_clamping(); 42 43 gpio_config_table(p2571_gpio_inits, 44 ARRAY_SIZE(p2571_gpio_inits)); 45 46 pinmux_config_pingrp_table(p2571_pingrps, 47 ARRAY_SIZE(p2571_pingrps)); 48 49 pinmux_config_drvgrp_table(p2571_drvgrps, 50 ARRAY_SIZE(p2571_drvgrps)); 51 } 52 53 /* 54 * Routine: start_cpu_fan 55 * Description: Enable/start PWM CPU fan on P2571 56 */ 57 void start_cpu_fan(void) 58 { 59 /* GPIO_PE4 is PS_VDD_FAN_ENABLE */ 60 gpio_request(TEGRA_GPIO(E, 4), "FAN_VDD"); 61 gpio_direction_output(TEGRA_GPIO(E, 4), 1); 62 } 63