forked from rrcarlosr/Jetpack
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
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/*
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* (C) Copyright 2013-2019
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <pca953x.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/pinmux.h>
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#include "../p2571/max77620_init.h"
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void pin_mux_mmc(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/* Turn on MAX77620 LDO2 to 3.3V for SD card power */
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debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
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ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
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if (ret) {
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printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
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return;
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}
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/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
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val = 0xF2;
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ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
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/* Disable LDO4 discharge */
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ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
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if (ret) {
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printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
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} else {
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val &= ~BIT(1); /* ADE */
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ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
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}
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/* Set MBLPD */
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ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
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if (ret) {
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printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
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} else {
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val |= BIT(6); /* MBLPD */
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ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
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}
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}
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#ifdef CONFIG_PCI_TEGRA
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int tegra_pcie_board_init(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/* Turn on MAX77620 LDO1 to 1.05V for PEX power */
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debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
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ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
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if (ret) {
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printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
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return -1;
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}
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/* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
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val = 0xCA;
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ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
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return 0;
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}
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#endif /* PCI */
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