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power: twl6030: Device-index-specific MMC power initialization

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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>
This commit is contained in:
Paul Kocialkowski
2016-02-27 19:18:51 +01:00
committed by Tom Rini
parent d7b6a75497
commit a85362fb3e
3 changed files with 26 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/power/twl6030.c
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@@ -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);
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);
/* 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);
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);
}
/* 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()