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| author | Paul Kocialkowski <contact@paulk.fr> | 2014-11-08 20:55:46 +0100 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-12-04 11:04:40 -0500 |
| commit | f3e85e4825e02fbd21859c35881f639a2c3e7afd (patch) | |
| tree | 2166e4d0ef572c57360363b8ba452419beaaf312 /drivers/power | |
| parent | 95de9ab201e9c43c8969321711de9e93e444e420 (diff) | |
| download | u-boot-imx-f3e85e4825e02fbd21859c35881f639a2c3e7afd.zip u-boot-imx-f3e85e4825e02fbd21859c35881f639a2c3e7afd.tar.gz u-boot-imx-f3e85e4825e02fbd21859c35881f639a2c3e7afd.tar.bz2 | |
twl4030: device-index-specific MMC power initializations, common ramp-up delay
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 VMMC1 and VMMC2, in doubt.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/twl4030.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c index e578ae6..7f1fdd1 100644 --- a/drivers/power/twl4030.c +++ b/drivers/power/twl4030.c @@ -91,17 +91,23 @@ void twl4030_power_init(void) TWL4030_PM_RECEIVER_DEV_GRP_P1); } -void twl4030_power_mmc_init(void) +void twl4030_power_mmc_init(int dev_index) { - /* Set VMMC1 to 3.15 Volts */ - twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED, - TWL4030_PM_RECEIVER_VMMC1_VSEL_32, - TWL4030_PM_RECEIVER_VMMC1_DEV_GRP, - TWL4030_PM_RECEIVER_DEV_GRP_P1); + if (dev_index == 0) { + /* Set VMMC1 to 3.15 Volts */ + twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED, + TWL4030_PM_RECEIVER_VMMC1_VSEL_32, + TWL4030_PM_RECEIVER_VMMC1_DEV_GRP, + TWL4030_PM_RECEIVER_DEV_GRP_P1); - /* Set VMMC2 to 3.15 Volts */ - twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC2_DEDICATED, - TWL4030_PM_RECEIVER_VMMC2_VSEL_32, - TWL4030_PM_RECEIVER_VMMC2_DEV_GRP, - TWL4030_PM_RECEIVER_DEV_GRP_P1); + mdelay(100); /* ramp-up delay from Linux code */ + } else if (dev_index == 1) { + /* Set VMMC2 to 3.15 Volts */ + twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC2_DEDICATED, + TWL4030_PM_RECEIVER_VMMC2_VSEL_32, + TWL4030_PM_RECEIVER_VMMC2_DEV_GRP, + TWL4030_PM_RECEIVER_DEV_GRP_P1); + + mdelay(100); /* ramp-up delay from Linux code */ + } } |