scsi: ufs: Introduce quirk to extend PA_HIBERN8TIME for UFS devices

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[ Upstream commit 569330a34a ]

Samsung UFS devices require additional time in hibern8 mode before
exiting, beyond the negotiated handshaking phase between the host and
device.  Introduce a quirk to increase the PA_HIBERN8TIME parameter by
100 µs, a value derived from experiments, to ensure a proper hibernation
process.

Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
Link: https://lore.kernel.org/r/20250411121630.21330-3-quic_mapa@quicinc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Manish Pandey 2025-04-11 17:46:30 +05:30 • committed by Greg Kroah-Hartman

parent fe8421e853

commit 42d15918da

2 changed files with 35 additions and 0 deletions

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29

drivers/ufs/core/ufshcd.c

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6

include/ufs/ufs_quirks.h

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