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Tegra114: MMC: Add SD bus power-rail init routine

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T114 requires SD bus power-rail bringup for the SDIO card on SDMMC3.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Tom Warren 2013-03-18 14:51:20 -07:00
parent 2a04a31791
commit 6d9ea159e4
1 changed files with 62 additions and 0 deletions
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62
board/nvidia/dalmore/dalmore.c
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@ -18,6 +18,10 @@
#include <asm/arch/pinmux.h>
#include <asm/arch/gp_padctrl.h>
#include "pinmux-config-dalmore.h"
#include <i2c.h>
#define BAT_I2C_ADDRESS 0x48 /* TPS65090 charger */
#define PMU_I2C_ADDRESS 0x58 /* TPS65913 PMU */
/*
* Routine: pinmux_init
@ -37,3 +41,61 @@ void pinmux_init(void)
/* Initialize any non-default pad configs (APB_MISC_GP regs) */
padgrp_config_table(dalmore_padctrl, ARRAY_SIZE(dalmore_padctrl));
}
#if defined(CONFIG_TEGRA_MMC)
/*
* Do I2C/PMU writes to bring up SD card bus power
*
*/
void board_sdmmc_voltage_init(void)
{
uchar reg, data_buffer[1];
int ret;
ret = i2c_set_bus_num(0);/* PMU is on bus 0 */
if (ret)
printf("%s: i2c_set_bus_num returned %d\n", __func__, ret);
/* TPS65913: LDO9_VOLTAGE = 3.3V */
data_buffer[0] = 0x31;
reg = 0x61;
ret = i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1);
if (ret)
printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
/* TPS65913: LDO9_CTRL = Active */
data_buffer[0] = 0x01;
reg = 0x60;
ret = i2c_write(PMU_I2C_ADDRESS, reg, 1, data_buffer, 1);
if (ret)
printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
/* TPS65090: FET6_CTRL = enable output auto discharge, enable FET6 */
data_buffer[0] = 0x03;
reg = 0x14;
ret = i2c_write(BAT_I2C_ADDRESS, reg, 1, data_buffer, 1);
if (ret)
printf("%s: BAT i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
}
/*
* Routine: pin_mux_mmc
* Description: setup the MMC muxes, power rails, etc.
*/
void pin_mux_mmc(void)
{
/*
* NOTE: We don't do mmc-specific pin muxes here.
* They were done globally in pinmux_init().
*/
/* Bring up the SDIO3 power rail */
board_sdmmc_voltage_init();
}
#endif /* MMC */