diff options
| author | Tom Warren <twarren@nvidia.com> | 2013-03-18 14:51:20 -0700 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2013-03-25 09:56:07 -0700 |
| commit | 6d9ea159e4900dc6bc4b38a064fc87cba4582c09 (patch) | |
| tree | fb7ee27431cd239dac521d7aa542e5dd7382b44e | |
| parent | 2a04a317911a550e55c2943d59063b621ea5f4ee (diff) | |
| download | u-boot-imx-6d9ea159e4900dc6bc4b38a064fc87cba4582c09.zip u-boot-imx-6d9ea159e4900dc6bc4b38a064fc87cba4582c09.tar.gz u-boot-imx-6d9ea159e4900dc6bc4b38a064fc87cba4582c09.tar.bz2 | |
Tegra114: MMC: Add SD bus power-rail init routine
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>
| -rw-r--r-- | board/nvidia/dalmore/dalmore.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/board/nvidia/dalmore/dalmore.c b/board/nvidia/dalmore/dalmore.c index 7449b5b..2c23a29 100644 --- a/board/nvidia/dalmore/dalmore.c +++ b/board/nvidia/dalmore/dalmore.c @@ -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 */ |