diff options
| author | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-05-11 15:40:30 +0200 |
|---|---|---|
| committer | Sebastian RASMUSSEN <sebastian.rasmussen@stericsson.com> | 2011-05-11 16:12:27 +0200 |
| commit | bc9540c9e88d4048214dcdf2f66f9fd5c6710a77 (patch) | |
| tree | f2530d4d1e74e32305fbe97534acfa426f56e14e | |
| parent | c936397fe5f463e12ba25a9f9cc03ab7f6ab7f9d (diff) | |
mach-ux500: Add delay when enable SD levelshifter
The SD-card levelshifter (ST6G3244ME) has an enabling-time
to drive the voltage to aquired level. The maximum time it
needs according to the spec is 100us. Thus we need to add
this delay to be safe.
Change-Id: Ie48ecb3143c9ddd202c48f53e7c9cb47e15c7431
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/22895
Reviewed-by: Sebastian RASMUSSEN <sebastian.rasmussen@stericsson.com>
| -rw-r--r-- | arch/arm/mach-ux500/board-mop500-sdi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/board-mop500-sdi.c b/arch/arm/mach-ux500/board-mop500-sdi.c index eec3cbd58e8..59870386b9f 100644 --- a/arch/arm/mach-ux500/board-mop500-sdi.c +++ b/arch/arm/mach-ux500/board-mop500-sdi.c @@ -97,6 +97,7 @@ static void sdi0_vdd_handler(struct device *dev, unsigned int vdd, gpio_direction_output(gpio[1], 0); /* Enable level shifter */ gpio_direction_output(gpio[0], 1); + udelay(100); break; case MMC_POWER_OFF: gpio_direction_output(gpio[1], 0); |