scsi: ufs: ufs-mediatek: Prevent host hang by setting CLK_CG early

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Some UFSHCI hosts in MediaTek UFS platform need workaround to prevent host
hang issue by setting CLK_CG bit before host is enabled.

This operation shall have no side effect on those platforms which do not
support this bit.

Link: https://lore.kernel.org/r/20220623035052.18802-4-stanley.chu@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Peter Wang 2022-06-23 11:50:47 +08:00 • committed by Martin K. Petersen

parent 981b4ac04c

commit 2bae03a6ac

2 changed files with 9 additions and 0 deletions

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8

drivers/ufs/host/ufs-mediatek.c

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1

drivers/ufs/host/ufs-mediatek.h

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