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 "../p2571/max77620_init.h" 12 #include "pinmux-config-p2371-2180.h" 13 14 void pin_mux_mmc(void) 15 { 16 struct udevice *dev; 17 uchar val; 18 int ret; 19 20 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */ 21 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__); 22 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 23 if (ret) { 24 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 25 return; 26 } 27 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 28 val = 0xF2; 29 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1); 30 if (ret) 31 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret); 32 33 /* Disable LDO4 discharge */ 34 ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1); 35 if (ret) { 36 printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret); 37 } else { 38 val &= ~BIT(1); /* ADE */ 39 ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1); 40 if (ret) 41 printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret); 42 } 43 44 /* Set MBLPD */ 45 ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1); 46 if (ret) { 47 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret); 48 } else { 49 val |= BIT(6); /* MBLPD */ 50 ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1); 51 if (ret) 52 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret); 53 } 54 } 55 56 /* 57 * Routine: pinmux_init 58 * Description: Do individual peripheral pinmux configs 59 */ 60 void pinmux_init(void) 61 { 62 pinmux_clear_tristate_input_clamping(); 63 64 gpio_config_table(p2371_2180_gpio_inits, 65 ARRAY_SIZE(p2371_2180_gpio_inits)); 66 67 pinmux_config_pingrp_table(p2371_2180_pingrps, 68 ARRAY_SIZE(p2371_2180_pingrps)); 69 70 pinmux_config_drvgrp_table(p2371_2180_drvgrps, 71 ARRAY_SIZE(p2371_2180_drvgrps)); 72 } 73 74 #ifdef CONFIG_PCI_TEGRA 75 int tegra_pcie_board_init(void) 76 { 77 struct udevice *dev; 78 uchar val; 79 int ret; 80 81 /* Turn on MAX77620 LDO1 to 1.05V for PEX power */ 82 debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__); 83 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev); 84 if (ret) { 85 printf("%s: Cannot find MAX77620 I2C chip\n", __func__); 86 return -1; 87 } 88 /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ 89 val = 0xCA; 90 ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1); 91 if (ret) 92 printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret); 93 94 return 0; 95 } 96 #endif /* PCI */ 97