[PATCH] scsi: ufs: rockchip: Improve RX noise immunity

[Shawn Lin]

Program VND_RX_SAVE_DET_CTRL for each RX lane to raise the receiver's
tolerance against short transients on the incoming signal, as recommended
by the Rockchip PHY team.

Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>

---

 drivers/ufs/host/ufs-rockchip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ufs/host/ufs-rockchip.c b/drivers/ufs/host/ufs-rockchip.c
index bac68f238e1c..87308c9b1070 100644
--- a/drivers/ufs/host/ufs-rockchip.c
+++ b/drivers/ufs/host/ufs-rockchip.c
@@ -82,6 +82,7 @@ static int ufs_rockchip_rk3576_phy_init(struct ufs_hba *hba)
 		ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_LINERESET_PVALUE2, SEL_RX_LANE0 + i), 0x02);
 		ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_LINERESET_OPTION, SEL_RX_LANE0 + i), 0xf6);
 		ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_POWER_SAVING_CTRL, SEL_RX_LANE0 + i), 0x69);
+		ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_SAVE_DET_CTRL, SEL_RX_LANE0 + i), 0x18);
 	}
 
 	/* disable the mphy DME_SET cfg */
-- 
2.25.1