Re: [PATCH v2 0/2] *** Remove UFS_DEVICE_QUIRK_DELAY_AFTER_LPM quirk ***

[Bart Van Assche]

On 10/9/25 1:10 PM, Bao D. Nguyen wrote:
> 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 5ms setting and allow the platform drivers
> to override this setting as needed to improve the system resume latency.

For both patches:

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>