Messages in this thread | | | From | Avri Altman <> | Subject | RE: [PATCH v2 1/5] scsi: ufs: allow legacy UFS devices to enable WriteBooster | Date | Thu, 30 Apr 2020 07:44:44 +0000 |
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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@mediatek.com> > Reviewed-by: Bean Huo <beanhuo@micron.com> 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
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