diff options
| author | Ash Charles <ash@gumstix.com> | 2011-09-28 06:47:16 +0000 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2011-12-09 17:28:28 +0100 |
| commit | 528cdcaacee55eb6c2910637e19541ee2c327487 (patch) | |
| tree | c778c0f877d734635bc7f38fd6a9f7f44cb446c3 /drivers/power | |
| parent | c4eba6ec5c58083b38340724c006294c7a4fe2eb (diff) | |
omap: TWL4030 Bump VMMC1 interface voltage from 3V to 3.15V
MMC interfaces are specified to be 3.3V compatible with an operating
voltage range of 3.1V to 3.5V for SD cards. This change affects
hardware using TWL4030 (TPS6595x) PMICs and should improve the
reliability when communicating with marginally-spec'd MMC devices.
3.15V is the highest possible level for this chip. This patch
has been tested on a Gumstix Overo board.
Signed-off-by: Ash Charles <ash@gumstix.com>
Tested-by: Steve Sakoman <steve@sakoman.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/twl4030.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c index 5a7323a715..4a4ddeb91f 100644 --- a/drivers/power/twl4030.c +++ b/drivers/power/twl4030.c @@ -97,9 +97,9 @@ void twl4030_power_init(void) void twl4030_power_mmc_init(void) { - /* Set VMMC1 to 3 Volts */ + /* Set VMMC1 to 3.15 Volts */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED, - TWL4030_PM_RECEIVER_VMMC1_VSEL_30, + TWL4030_PM_RECEIVER_VMMC1_VSEL_32, TWL4030_PM_RECEIVER_VMMC1_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); } |