mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
efbb3d491e
Rev A03 of P2180 requires some PMIC programming adjustments, yet the PMIC's own OTP has not been updated. Consequently, U-Boot must make these changes itself. NVIDIA's syseng team has confirmed that these changes can be enabled on all board revisions without issue. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
|
|
* (C) Copyright 2013-2015
|
|
* NVIDIA Corporation <www.nvidia.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <i2c.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/pinmux.h>
|
|
#include "../p2571/max77620_init.h"
|
|
#include "pinmux-config-p2371-2180.h"
|
|
|
|
void pin_mux_mmc(void)
|
|
{
|
|
struct udevice *dev;
|
|
uchar val;
|
|
int ret;
|
|
|
|
/* Turn on MAX77620 LDO2 to 3.3V for SD card power */
|
|
debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
|
|
ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
|
|
if (ret) {
|
|
printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
|
|
return;
|
|
}
|
|
/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
|
|
val = 0xF2;
|
|
ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
|
|
if (ret)
|
|
printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
|
|
|
|
/* Disable LDO4 discharge */
|
|
ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
|
|
if (ret) {
|
|
printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
|
|
} else {
|
|
val &= ~BIT(1); /* ADE */
|
|
ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
|
|
if (ret)
|
|
printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
|
|
}
|
|
|
|
/* Set MBLPD */
|
|
ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
|
|
if (ret) {
|
|
printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
|
|
} else {
|
|
val |= BIT(6); /* MBLPD */
|
|
ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
|
|
if (ret)
|
|
printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Routine: pinmux_init
|
|
* Description: Do individual peripheral pinmux configs
|
|
*/
|
|
void pinmux_init(void)
|
|
{
|
|
pinmux_clear_tristate_input_clamping();
|
|
|
|
gpio_config_table(p2371_2180_gpio_inits,
|
|
ARRAY_SIZE(p2371_2180_gpio_inits));
|
|
|
|
pinmux_config_pingrp_table(p2371_2180_pingrps,
|
|
ARRAY_SIZE(p2371_2180_pingrps));
|
|
|
|
pinmux_config_drvgrp_table(p2371_2180_drvgrps,
|
|
ARRAY_SIZE(p2371_2180_drvgrps));
|
|
}
|
|
|
|
#ifdef CONFIG_PCI_TEGRA
|
|
int tegra_pcie_board_init(void)
|
|
{
|
|
struct udevice *dev;
|
|
uchar val;
|
|
int ret;
|
|
|
|
/* Turn on MAX77620 LDO1 to 1.05V for PEX power */
|
|
debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
|
|
ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
|
|
if (ret) {
|
|
printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
|
|
return -1;
|
|
}
|
|
/* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
|
|
val = 0xCA;
|
|
ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
|
|
if (ret)
|
|
printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* PCI */
|