scsi: ufs: ufs-mediatek: add waiting time for reference clock

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Some delays may be required either after gating or before ungating
reference clock for device according to vendor requirements.

Note that in UFS 3.0, the delay time after gating reference
clock can be defined by attribute bRefClkGatingWaitTime. Use the
formal value instead if it can be queried from device.

Link: https://lore.kernel.org/r/20200220134848.8807-2-stanley.chu@mediatek.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Stanley Chu 2020-02-20 21:48:48 +08:00 • committed by Martin K. Petersen

parent 27ff2c60e0

commit b3222c326c

2 changed files with 46 additions and 2 deletions

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46

drivers/scsi/ufs/ufs-mediatek.c

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2

drivers/scsi/ufs/ufs-mediatek.h

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