> > WriteBooster feature can be supported by some pre-3.1 UFS devices > by upgrading firmware. > > To enable WriteBooster feature in such devices, introduce a device > quirk to relax the entrance condition of ufshcd_wb_probe() to allow > host driver to check those devices' WriteBooster capability. > > WriteBooster feature can be available if below all conditions are > satisfied, > > 1. Host enables WriteBooster capability > 2. UFS 3.1 device or UFS pre-3.1 device with quirk > UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled > 3. The device descriptor shall have > DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP field > 4. WriteBooster support is specified in above field > > Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx> Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
