i2c: rcar: reset controller is mandatory for Gen3+

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Initially, we only needed a reset controller to make sure RXDMA works at
least once per transfer. Meanwhile, documentation has been updated. It
now says that a reset has to be performed prior every transaction, even
if it is non-DMA. So, make the reset controller a requirement instead of
being optional. And bail out if resetting fails.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Wolfram Sang 2023-09-21 14:53:49 +02:00 • committed by Wolfram Sang

parent f707d6b9e7

commit 0e864b552b

1 changed files with 14 additions and 15 deletions

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drivers/i2c/busses/i2c-rcar.c

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