[PATCH v3 0/2] *** Remove UFS_DEVICE_QUIRK_DELAY_AFTER_LPM quirk ***

[Martin K. Petersen]

Bao,

> Multiple ufs device manufacturers request support for the
> UFS_DEVICE_QUIRK_DELAY_AFTER_LPM quirk in the Qualcomm's platform
> driver. After checking further with the major UFS manufacturers
> engineering teams such as Samsung, Kioxia, SK Hynix and Micron, all
> the manufacturers require this quirk. Since the quirk is needed by all
> the ufs device manufacturers, remove the quirk in the ufs core driver
> and implement a universal delay for all the ufs devices.
>
> In addition to verifying with the public device's datasheets, the ufs
> device manufacturer's engineering teams confirmed the required vcc
> power-off time for the devices is a minimum of 1ms before vcc can be
> powered on again. The existing 5ms delay implemented in the ufs core
> driver seems too conservative, so replace the hard coded 5ms delay
> with a variable default to 2ms setting to improve the system resume
> latency. The platform drivers can override this setting as needed.

Applied to 6.19/scsi-staging, thanks!

-- 
Martin K. Petersen