ufs: tegra: Set burst closure delay to 0

-Before link start configuration request from Host controller,
burst closure delay needs to be configured to 0.
-This setting is recommended by ASIC team.

Bug 200277026

Change-Id: I7f5b1ab4fa98dcc208329e0d89849c2c663a6349
Signed-off-by: Naveen Kumar Arepalli <naveenk@nvidia.com>
Reviewed-on: http://git-master/r/1302085
(cherry picked from commit 4d36e17224bb912386a24e936fc230fadd578233)
Reviewed-on: http://git-master/r/1460449
GVS: Gerrit_Virtual_Submit
Reviewed-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/ufs/ufs-tegra.c b/drivers/scsi/ufs/ufs-tegra.c
index 42a8ffef1..851eb68a9 100644
--- a/drivers/scsi/ufs/ufs-tegra.c
+++ b/drivers/scsi/ufs/ufs-tegra.c
@@ -1065,6 +1065,10 @@ static void ufs_tegra_unipro_pre_linkup(struct ufs_hba *hba)
 {
         /* Unipro LCC disable */
         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_Local_TX_LCC_Enable), 0x0);
+        /* Before link start configuration request from Host controller,
+         * burst closure delay needs to be configured to 0
+         */
+        ufshcd_dme_set(hba, UIC_ARG_MIB(VS_TXBURSTCLOSUREDELAY), 0x0);
 }
 
 static int ufs_tegra_link_startup_notify(struct ufs_hba *hba,
diff --git a/drivers/scsi/ufs/ufs-tegra.h b/drivers/scsi/ufs/ufs-tegra.h
index 3607990f6..f8cd4bafc 100644
--- a/drivers/scsi/ufs/ufs-tegra.h
+++ b/drivers/scsi/ufs/ufs-tegra.h
@@ -81,6 +81,9 @@
 #define VS_DEBUGSAVECONFIGTIME_ST_SCT   0x3
 #define SET_ST_SCT(x)                   ((x) & 0x3)
 
+#define VS_TXBURSTCLOSUREDELAY          0xD084
+
+
 #define MPHY_ADDR_RANGE         0x1fc
 #define UFS_AUX_ADDR_RANGE      0x18