linux-stable/drivers/mmc
Laurentiu Tudor 5552d7ad59 mmc: sdhci-of-esdhc: set proper dma mask for ls104x chips
SDHCI controller in ls1043a and ls1046a generate 40-bit wide addresses
when doing DMA. Make sure that the corresponding dma mask is correctly
configured.

Context: when enabling smmu on these chips the following problem is
encountered: the smmu input address size is 48 bits so the dma mappings
for sdhci end up 48-bit wide. However, on these chips sdhci only use
40-bits of that address size when doing dma.
So you end up with a 48-bit address translation in smmu but the device
generates transactions with clipped 40-bit addresses, thus smmu context
faults are triggered. Setting up the correct dma mask fixes this
situation.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-07-16 11:21:45 +02:00
..
core mmc: core: Drop the unused mmc_power_save|restore_host() 2018-07-16 11:21:45 +02:00
host mmc: sdhci-of-esdhc: set proper dma mask for ls104x chips 2018-07-16 11:21:45 +02:00
Kconfig mmc: core: Remove option not to use blk-mq 2017-12-11 12:55:02 +01:00
Makefile mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only 2017-08-30 14:01:34 +02:00