phy: phy-mt65xx-usb3: fix test fail of HS receiver sensitivity

when use the default value 8 of RG_USB20_SQTH, the HS receiver
sensitivity test of HQA will fail, set it as 2 to fix up the
issue.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c
index e427c3b788ff..2afbf9f36d83 100644
--- a/drivers/phy/phy-mt65xx-usb3.c
+++ b/drivers/phy/phy-mt65xx-usb3.c
@@ -49,6 +49,8 @@
 #define PA6_RG_U2_ISO_EN                BIT(31)
 #define PA6_RG_U2_BC11_SW_EN            BIT(23)
 #define PA6_RG_U2_OTG_VBUSCMP_EN        BIT(20)
+#define PA6_RG_U2_SQTH          GENMASK(3, 0)
+#define PA6_RG_U2_SQTH_VAL(x)   (0xf & (x))
 
 #define U3P_U2PHYACR4           (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0020)
 #define P2C_RG_USB20_GPIO_CTL           BIT(9)
@@ -165,9 +167,10 @@ static void phy_instance_init(struct mt65xx_u3phy *u3phy,
                 writel(tmp, port_base + U3P_U2PHYDTM0);
         }
 
-        /* DP/DM BC1.1 path Disable */
         tmp = readl(port_base + U3P_USBPHYACR6);
-        tmp &= ~PA6_RG_U2_BC11_SW_EN;
+        tmp &= ~PA6_RG_U2_BC11_SW_EN;   /* DP/DM BC1.1 path Disable */
+        tmp &= ~PA6_RG_U2_SQTH;
+        tmp |= PA6_RG_U2_SQTH_VAL(2);
         writel(tmp, port_base + U3P_USBPHYACR6);
 
         tmp = readl(port_base + U3P_U3PHYA_DA_REG0);