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>
Cc: <matthias.bgg@gmail.com>, <bvanassche@acm.org>,
<linux-mediatek@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kuohong.wang@mediatek.com>,
<peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
<andy.teng@mediatek.com>, <chaotian.jing@mediatek.com>,
<cc.chou@mediatek.com>, Stanley Chu <stanley.chu@mediatek.com>
Subject: [PATCH] scsi: ufs-mediatek: Modify the minimum RX/TX lane count to 2
Date: Wed, 19 Aug 2020 16:43:40 +0800 [thread overview]
Message-ID: <20200819084340.7021-1-stanley.chu@mediatek.com> (raw)
From: Andy Teng <andy.teng@mediatek.com>
MediaTek UFS host starts to support 2 lanes, thus modify the
minimum lane count to 2.
This modification shall not impact old 1-lane host because
PA_CONNECTEDRXDATALANES and PA_CONNECTEDTXDATALANES will limit the
target lanes properly during power mode change. So we could relax
the limitation in ufs_dev_params.
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Andy Teng <andy.teng@mediatek.com>
Singed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/scsi/ufs/ufs-mediatek.h
index 8ed24d5fcff9..87657376d27a 100644
--- a/drivers/scsi/ufs/ufs-mediatek.h
+++ b/drivers/scsi/ufs/ufs-mediatek.h
@@ -33,8 +33,8 @@
/*
* Vendor specific pre-defined parameters
*/
-#define UFS_MTK_LIMIT_NUM_LANES_RX 1
-#define UFS_MTK_LIMIT_NUM_LANES_TX 1
+#define UFS_MTK_LIMIT_NUM_LANES_RX 2
+#define UFS_MTK_LIMIT_NUM_LANES_TX 2
#define UFS_MTK_LIMIT_HSGEAR_RX UFS_HS_G3
#define UFS_MTK_LIMIT_HSGEAR_TX UFS_HS_G3
#define UFS_MTK_LIMIT_PWMGEAR_RX UFS_PWM_G4
--
2.18.0
next reply other threads:[~2020-08-19 8:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-19 8:43 Stanley Chu [this message]
2020-08-20 6:03 ` [PATCH] scsi: ufs-mediatek: Modify the minimum RX/TX lane count to 2 Avri Altman
2020-09-09 2:17 ` Martin K. Petersen
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