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 "../p2571/max77620_init.h" 13 #include "pinmux-config-p2371-2180.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 /* Disable LDO4 discharge */ 35 ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1); 36 if (ret) { 37 printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret); 38 } else { 39 val &= ~BIT(1); /* ADE */ 40 ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1); 41 if (ret) 42 printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret); 43 } 44 45 /* Set MBLPD */ 46 ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1); 47 if (ret) { 48 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret); 49 } else { 50 val |= BIT(6); /* MBLPD */ 51 ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1); 52 if (ret) 53 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret); 54 } 55 } 56 57 /* 58 * Routine: pinmux_init 59 * Description: Do individual peripheral pinmux configs 60 */ 61 void pinmux_init(void) 62 { 63 pinmux_clear_tristate_input_clamping(); 64 65 gpio_config_table(p2371_2180_gpio_inits, 66 ARRAY_SIZE(p2371_2180_gpio_inits)); 67 68 pinmux_config_pingrp_table(p2371_2180_pingrps, 69 ARRAY_SIZE(p2371_2180_pingrps)); 70 71 pinmux_config_drvgrp_table(p2371_2180_drvgrps, 72 ARRAY_SIZE(p2371_2180_drvgrps)); 73 } 74 75 #ifdef CONFIG_PCI_TEGRA 76 int tegra_pcie_board_init(void) 77 { 78 struct udevice *dev; 79 uchar val; 80 int ret; 81 82 /* Turn on MAX77620 LDO1 to 1.05V for PEX power */ 83 debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__); 84 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 85 if (ret) { 86 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 87 return -1; 88 } 89 /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 90 val = 0xCA; 91 ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1); 92 if (ret) 93 printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret); 94 95 return 0; 96 } 97 #endif /* PCI */ 98