diff options
| author | Manish Pandey <quic_mapa@quicinc.com> | 2025-04-11 17:46:30 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-04-11 22:13:00 -0400 |
| commit | 569330a34a31a52c904239439984a59972c11d28 (patch) | |
| tree | aa75f6376aba1b2fab74f8ac235624d5a7e11678 /include | |
| parent | f8cba9a700cf38b181df7c1d809cd73c6e1b2df9 (diff) | |
scsi: ufs: Introduce quirk to extend PA_HIBERN8TIME for UFS devices
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/ufs/ufs_quirks.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/ufs/ufs_quirks.h b/include/ufs/ufs_quirks.h index 41ff44dfa1db..f52de5ed1b3b 100644 --- a/include/ufs/ufs_quirks.h +++ b/include/ufs/ufs_quirks.h @@ -107,4 +107,10 @@ struct ufs_dev_quirk { */ #define UFS_DEVICE_QUIRK_DELAY_AFTER_LPM (1 << 11) +/* + * Some ufs devices may need more time to be in hibern8 before exiting. + * Enable this quirk to give it an additional 100us. + */ +#define UFS_DEVICE_QUIRK_PA_HIBER8TIME (1 << 12) + #endif /* UFS_QUIRKS_H_ */ |