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T210: P2571: Enable SD-card power via PMIC LDO2

Browse source 
This was done in the 32-bit AVP loader (SPL) but is
board-specific so should be moved to the CPU portion.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Tom Warren 2015-07-28 15:13:17 -07:00
parent a5325cd5e9
commit 4132bc90e6
4 changed files with 24 additions and 87 deletions
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1
board/nvidia/p2571/Makefile
View file

@ -5,5 +5,4 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += max77620_init.o
obj-y += p2571.o

85
board/nvidia/p2571/max77620_init.c
View file

@ -1,85 +0,0 @@
/*
* (C) Copyright 2013-2015
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch-tegra/tegra_i2c.h>
#include "max77620_init.h"
/* MAX77620-PMIC-specific early init code - get CPU rails up, etc */
void tegra_i2c_ll_write_addr(uint addr, uint config)
{
struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
writel(addr, &reg->cmd_addr0);
writel(config, &reg->cnfg);
}
void tegra_i2c_ll_write_data(uint data, uint config)
{
struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
writel(data, &reg->cmd_data1);
writel(config, &reg->cnfg);
}
void pmic_enable_cpu_vdd(void)
{
uint reg;
debug("%s entry\n", __func__);
/* Setup/Enable GPIO5 - VDD_CPU_REG_EN */
debug("%s: Setting GPIO5 to enable CPU regulator\n", __func__);
/* B3=1=logic high,B2=dontcare,B1=0=output,B0=1=push-pull */
reg = 0x0900 | MAX77620_GPIO5_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
/* Setup/Enable GPIO1 - VDD_HDMI_5V0_BST_EN */
debug("%s: Setting GPIO1 to enable HDMI\n", __func__);
reg = 0x0900 | MAX77620_GPIO1_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
/* GPIO 0,1,5,6,7 = GPIO, 2,3,4 = alt mode */
reg = 0x1C00 | MAX77620_AME_GPIO;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
/* Disable SD1 Remote Sense, Set SD1 for LPDDR4 to 1.125v */
debug("%s: Set SD1 for LPDDR4, disable SD1RS, voltage to 1.125v\n",
__func__);
/* bit1=0, SD1 remote sense disabled */
reg = 0x0400 | MAX77620_CNFG2SD_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
/* SD1 output = 1.125V */
reg = 0x2A00 | MAX77620_SD1_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
reg = 0xF200 | MAX77620_CNFG1_L2_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
debug("%s: Set LDO1 for USB3 phy power to 1.05V??\n", __func__);
/* 0xCA for 105v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
reg = 0xCA00 | MAX77620_CNFG1_L1_REG;
tegra_i2c_ll_write_addr(MAX77620_I2C_ADDR, 2);
tegra_i2c_ll_write_data(reg, I2C_SEND_2_BYTES);
udelay(10 * 1000);
}

3
board/nvidia/p2571/max77620_init.h
View file

@ -10,7 +10,8 @@
/* MAX77620-PMIC-specific early init regs */
#define MAX77620_I2C_ADDR 0x78 /* or 0x3C 7-bit */
#define MAX77620_I2C_ADDR 0x78
#define MAX77620_I2C_ADDR_7BIT 0x3C
#define MAX77620_SD0_REG 0x16
#define MAX77620_SD1_REG 0x17

22
board/nvidia/p2571/p2571.c
View file

@ -6,10 +6,32 @@
*/
#include <common.h>
#include <i2c.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h>
#include "max77620_init.h"
#include "pinmux-config-p2571.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);
}
/*
* Routine: pinmux_init
* Description: Do individual peripheral pinmux configs