spi: sh-msiof: Add reset of registers before starting transfer

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In accordance with hardware specification Ver 1.0, reset register
transmission / reception setting before transfer.

Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
[geert: Use readl_poll_timeout_atomic()]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Geert Uytterhoeven 2019-04-02 16:40:23 +02:00 • committed by Mark Brown

parent 9115b4d89b

commit fedd694068

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drivers/spi/spi-sh-msiof.c

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