[PATCH v2] spi: spi-mtk-nor: Add recovery mechanism for dma read timeout

[AngeloGioacchino Del Regno]

Il 07/12/22 06:54, Bayi Cheng ha scritto:
> From: bayi cheng <bayi.cheng at mediatek.com>
> 
> The state machine of MTK spi nor controller may be disturbed by some
> glitch signals from the relevant BUS during dma read, Although the
> possibility of causing the dma read to fail is next to nothing,
> However, if error-handling is not implemented, which makes the feature
> somewhat risky.
> 
> Add an error-handling mechanism here, reset the state machine and
> re-read the data when an error occurs.
> 
> Signed-off-by: bayi cheng <bayi.cheng at mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>