[PATCH] scsi: ufs-mediatek: Modify the minimum RX/TX lane count to 2

From: Stanley Chu
Date: Wed Aug 19 2020 - 04:43:47 EST


From: Andy Teng <andy.teng@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>
Signed-off-by: Andy Teng <andy.teng@xxxxxxxxxxxx>
Singed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
---
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