Stefan Agner 636a9a7d52 mmc: sdhci: do not try to use 3.3V signaling if not supported ...

[ Upstream commit 1b5190c2e74c47ebe4bcecf7a072358ad9f1feaa ]

For eMMC devices it is valid to only support 1.8V signaling. When
vqmmc is set to a fixed 1.8V regulator the stack tries to set 3.3V
initially and prints the following warning:
   mmc1: Switching to 3.3V signalling voltage failed

Clear the MMC_SIGNAL_VOLTAGE_330 flag in case 3.3V is signaling is
not available. This prevents the stack from even trying to use
3.3V signaling and avoids the above warning.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-09-26 08:38:11 +02:00

..

core

mmc: pwrseq: Use kmalloc_array instead of stack VLA

2018-08-03 07:50:37 +02:00

host

mmc: sdhci: do not try to use 3.3V signaling if not supported

2018-09-26 08:38:11 +02:00

Kconfig

mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only

2017-08-30 14:01:34 +02:00

Makefile

mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only

2017-08-30 14:01:34 +02:00