mmc: tmio: fix reset operation

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SD / MMC did not operate properly when suspend transition failed.
Because the SCC was not reset at resume, issue of the command failed.
Call the host specific reset function and reset the hardware in order to
add reset of SCC. This change also fixes tuning on some stubborn cards
on Gen2.

Based on work from Masaharu Hayakawa.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Niklas Söderlund 2018-11-26 18:02:46 +01:00 • committed by Ulf Hansson

parent ac1e25c870

commit a87852c6b8

1 changed files with 15 additions and 12 deletions

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drivers/mmc/host/tmio_mmc_core.c

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