scsi: ufs: mediatek: Fix vsx/vccqx control logic

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VSX (the upper layer of VCCQ/VCCQ2) should:

 1. Always set to hpm mode if ufs device is active.

 2. Enter lpm mode only if ufs device is not active.

VCCQX should:

 1. Keep hpm mode if vccq and vccq2 not set in dts.

 2. Keep hpm mode if vcc not set in dts keep vcc always on.

 3. Keep hpm if broken vcc keep vcc always on and not allow vccq lpm.

 4. Except upper case, can enter lpm mode if ufs device is not active.

Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20240315083448.7185-2-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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This commit is contained in:

Peter Wang 2024-03-15 16:34:42 +08:00 • committed by Martin K. Petersen

parent 4cece76496

commit 1c5e7221bb

2 changed files with 35 additions and 12 deletions

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41

drivers/ufs/host/ufs-mediatek.c

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6

drivers/ufs/host/ufs-mediatek.h

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