diff options
| author | Paul Kocialkowski <contact@paulk.fr> | 2016-02-27 19:18:51 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-03-15 15:10:51 -0400 |
| commit | a85362fb3e1fc7833723accddbbae431091d06b8 (patch) | |
| tree | 60790c8114587af290b4ab1ff71347a7195ed2a3 /drivers/power | |
| parent | d7b6a75497ea2a33a1d2e4b8fa4d98dc8c7e876b (diff) | |
| download | blackbird-obmc-uboot-a85362fb3e1fc7833723accddbbae431091d06b8.tar.gz blackbird-obmc-uboot-a85362fb3e1fc7833723accddbbae431091d06b8.zip | |
power: twl6030: Device-index-specific MMC power initialization
Not every device has multiple MMC slots available, so it makes sense to enable
only the required LDOs for the available slots. Generic code in omap_hsmmc will
enable both VMMC and VAUX1, in doubt.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/twl6030.c | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c index 2fb39675af..7ed9129ac7 100644 --- a/drivers/power/twl6030.c +++ b/drivers/power/twl6030.c @@ -212,34 +212,36 @@ void twl6030_init_battery_charging(void) return; } -void twl6030_power_mmc_init() +void twl6030_power_mmc_init(int dev_index) { u8 value = 0; - /* 3.0V voltage output for VMMC */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE, - TWL6030_CFG_VOLTAGE_30); - - /* Enable P1 output for VMMC */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE, - TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON); - - twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value); - - /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */ - if (value & TWL6030_PH_STS_BOOT2) { - /* 1.8V voltage output for VAUX1 */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE, - TWL6030_CFG_VOLTAGE_18); - } else { - /* 2.8V voltage output for VAUX1 */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE, - TWL6030_CFG_VOLTAGE_28); + if (dev_index == 0) { + /* 3.0V voltage output for VMMC */ + twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE, + TWL6030_CFG_VOLTAGE_30); + + /* Enable P1 output for VMMC */ + twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE, + TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON); + + twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value); + } else if (dev_index == 1) { + /* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */ + if (value & TWL6030_PH_STS_BOOT2) { + /* 1.8V voltage output for VAUX1 */ + twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE, + TWL6030_CFG_VOLTAGE_18); + } else { + /* 2.8V voltage output for VAUX1 */ + twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE, + TWL6030_CFG_VOLTAGE_28); + } + + /* Enable P1 output for VAUX */ + twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE, + TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON); } - - /* Enable P1 output for VAUX */ - twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE, - TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON); } void twl6030_usb_device_settings() |
