diff options
| author | Mela Custodio <[email protected]> | 2012-11-03 17:40:16 +0000 |
|---|---|---|
| committer | Andy Fleming <[email protected]> | 2012-11-27 17:26:48 -0600 |
| commit | 688c2d140bcd457210a279dc489825e75ab1743a (patch) | |
| tree | 2f5c80c90f46eab3d6956f8ef8a3d9827a388f27 /drivers | |
| parent | b7e3129e550957f046c29a917c63f4b503fbfcb9 (diff) | |
mmc: add no simultaenous power and vdd
Bring in the code from Linux kernel.
Added to Linux kernel by:
commit e08c1694d9e2138204f2b79b73f0f159074ce2f5
Author: Andres Salomon <[email protected]>
Date: Fri Jul 4 10:00:03 2008 -0700
Some HW balks when writing both voltage setting and power up at the same
time to SDHCI_POWER_CONTROL register.
Signed-off-by: Rommel G Custodio <[email protected]>
CC: Andy Fleming <[email protected]>
v2: fix attribution and SOB
Signed-off-by: Andy Fleming <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/sdhci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 7845f873ac9..b9cbe34f1f1 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -340,6 +340,9 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) return; } + if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) + sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); + pwr |= SDHCI_POWER_ON; sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); |