From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
<jejb@linux.ibm.com>, <asutoshd@codeaurora.org>
Cc: <beanhuo@micron.com>, <cang@codeaurora.org>,
<matthias.bgg@gmail.com>, <bvanassche@acm.org>,
<linux-mediatek@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<Virtual_Global_UFS_Upstream@mediatek.com>,
Stanley Chu <stanley.chu@mediatek.com>
Subject: [PATCH v4 2/4] scsi: ufs: Allow WriteBooster on UFS 2.2 devices
Date: Fri, 22 May 2020 16:32:10 +0800 [thread overview]
Message-ID: <20200522083212.4008-3-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200522083212.4008-1-stanley.chu@mediatek.com>
According to the UFS specification, WriteBooster is officially
supported by UFS 2.2.
Since UFS 2.2 specification has been finalized in JEDEC and
such devices have also showed up in the market, modify the
checking rule for ufshcd_wb_probe() to allow these devices to enable
WriteBooster.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufshcd.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9e55c524f330..0dbd8a7a6642 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6930,6 +6930,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
* UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled
*/
if (dev_info->wspecversion >= 0x310 ||
+ dev_info->wspecversion == 0x220 ||
(hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES))
ufshcd_wb_probe(hba, desc_buf);
--
2.18.0
next prev parent reply other threads:[~2020-05-22 8:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 8:32 [PATCH v4 0/4] scsi: ufs: Fix WriteBooster and cleanup UFS driver Stanley Chu
2020-05-22 8:32 ` [PATCH v4 1/4] scsi: ufs: Remove unnecessary memset for dev_info Stanley Chu
2020-05-22 8:32 ` Stanley Chu [this message]
2020-05-22 8:32 ` [PATCH v4 3/4] scsi: ufs: Fix index of attributes query for WriteBooster feature Stanley Chu
2020-05-22 8:32 ` [PATCH v4 4/4] scsi: ufs: Fix WriteBooster flush during runtime suspend Stanley Chu
2020-05-26 17:25 ` [PATCH v4 0/4] scsi: ufs: Fix WriteBooster and cleanup UFS driver Asutosh Das (asd)
2020-05-27 2:12 ` Martin K. Petersen
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