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authorPaul Kocialkowski <contact@paulk.fr>2014-11-08 20:55:46 +0100
committerTom Rini <trini@ti.com>2014-12-04 11:04:40 -0500
commitf3e85e4825e02fbd21859c35881f639a2c3e7afd (patch)
tree2166e4d0ef572c57360363b8ba452419beaaf312 /drivers/power
parent95de9ab201e9c43c8969321711de9e93e444e420 (diff)
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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.c28
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 */
+ }
}