Messages in this thread | | | From | Avri Altman <> | Subject | RE: [PATCH v7 1/8] scsi: ufs: enable WriteBooster on some pre-3.1 UFS devices | Date | Fri, 8 May 2020 07:35:43 +0000 |
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> > 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@mediatek.com> Reviewed-by: Avri Altman <avri.altman@wdc.com>
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