[PATCH 05/28] phy: phy-mt65xx-usb3: fix test fail of HS receiver sensitivity

Kishon Vijay Abraham I
2015-12-22T10:46:58Z

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

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>
---
drivers/phy/phy-mt65xx-usb3.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c
index e427c3b..2afbf9f3 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);
--
1.7.9.5