Hi Stanley, > > WriteBooster feature may be supported by some legacy UFS devices > (i.e., < 3.1) by upgrading firmware. > > To enable WriteBooster feature in such devices, 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 both conditions are > satisfied, > > 1. Device descriptor has dExtendedUFSFeaturesSupport field. > 2. WriteBooster support is specified in above field. > > Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx> > Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx> WB was first introduced as part of UFS3.1, and lately as part of UFS2.2. Any non-standard behavior should be classified as a quirk. Thanks, Avri
