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* [PATCH v5 1/9] phy: phy-mt65xx-usb3: improve RX detection stable time
@ 2017-03-31  7:35 Chunfeng Yun
       [not found] ` <1490945735-9531-1-git-send-email-chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
                   ` (5 more replies)
  0 siblings, 6 replies; 12+ messages in thread
From: Chunfeng Yun @ 2017-03-31  7:35 UTC (permalink / raw)
  To: Kishon Vijay Abraham I
  Cc: Matthias Brugger, Felipe Balbi, Rob Herring, Mark Rutland,
	Ian Campbell, Chunfeng Yun, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	linux-usb-u79uwXL29TY76Z2rM5mHXA,
	linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	devicetree-u79uwXL29TY76Z2rM5mHXA

The default value of RX detection stable time is 10us, and this
margin is too big for some critical cases which cause U3 link fail
and link to U2(probability is about 1%). So change it to 5us.

Signed-off-by: Chunfeng Yun <chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
 drivers/phy/phy-mt65xx-usb3.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c
index d972067..fe2392a 100644
--- a/drivers/phy/phy-mt65xx-usb3.c
+++ b/drivers/phy/phy-mt65xx-usb3.c
@@ -112,6 +112,14 @@
 #define P3D_RG_CDR_BIR_LTD0		GENMASK(12, 8)
 #define P3D_RG_CDR_BIR_LTD0_VAL(x)	((0x1f & (x)) << 8)
 
+#define U3P_U3_PHYD_RXDET1		(SSUSB_SIFSLV_U3PHYD_BASE + 0x128)
+#define P3D_RG_RXDET_STB2_SET		GENMASK(17, 9)
+#define P3D_RG_RXDET_STB2_SET_VAL(x)	((0x1ff & (x)) << 9)
+
+#define U3P_U3_PHYD_RXDET2		(SSUSB_SIFSLV_U3PHYD_BASE + 0x12c)
+#define P3D_RG_RXDET_STB2_SET_P3	GENMASK(8, 0)
+#define P3D_RG_RXDET_STB2_SET_P3_VAL(x)	(0x1ff & (x))
+
 #define U3P_XTALCTL3		(SSUSB_SIFSLV_SPLLC + 0x0018)
 #define XC3_RG_U3_XTAL_RX_PWD		BIT(9)
 #define XC3_RG_U3_FRC_XTAL_RX_PWD	BIT(8)
@@ -295,6 +303,16 @@ static void phy_instance_init(struct mt65xx_u3phy *u3phy,
 	tmp |= P3D_RG_CDR_BIR_LTD0_VAL(0xc) | P3D_RG_CDR_BIR_LTD1_VAL(0x3);
 	writel(tmp, port_base + U3P_PHYD_CDR1);
 
+	tmp = readl(port_base + U3P_U3_PHYD_RXDET1);
+	tmp &= ~P3D_RG_RXDET_STB2_SET;
+	tmp |= P3D_RG_RXDET_STB2_SET_VAL(0x10);
+	writel(tmp, port_base + U3P_U3_PHYD_RXDET1);
+
+	tmp = readl(port_base + U3P_U3_PHYD_RXDET2);
+	tmp &= ~P3D_RG_RXDET_STB2_SET_P3;
+	tmp |= P3D_RG_RXDET_STB2_SET_P3_VAL(0x10);
+	writel(tmp, port_base + U3P_U3_PHYD_RXDET2);
+
 	dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index);
 }
 
-- 
1.7.9.5

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^ permalink raw reply related	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2017-05-10  9:48 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-03-31  7:35 [PATCH v5 1/9] phy: phy-mt65xx-usb3: improve RX detection stable time Chunfeng Yun
     [not found] ` <1490945735-9531-1-git-send-email-chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2017-03-31  7:35   ` [PATCH v5 2/9] phy: phy-mt65xx-usb3: increase LFPS filter threshold Chunfeng Yun
2017-03-31  7:35   ` [PATCH v5 3/9] phy: phy-mt65xx-usb3: split SuperSpeed port into two ones Chunfeng Yun
2017-03-31  7:35   ` [PATCH v5 5/9] phy: phy-mt65xx-usb3: add support for new version phy Chunfeng Yun
2017-03-31  7:35   ` [PATCH v5 9/9] dt-bindings: phy-mt65xx-usb: " Chunfeng Yun
2017-03-31  7:35 ` [PATCH v5 4/9] phy: phy-mt65xx-usb3: move clock from phy node into port nodes Chunfeng Yun
2017-03-31  7:35 ` [PATCH v5 6/9] phy: phy-mt65xx-usb3: disable 100uA extraction from SS port to HS port Chunfeng Yun
2017-03-31  7:35 ` [PATCH v5 7/9] arm64: dts: mt8173: split usb SuperSpeed port into two ports Chunfeng Yun
2017-03-31  7:35 ` [PATCH v5 8/9] arm64: dts: mt8173: move clock from phy node into port nodes Chunfeng Yun
2017-04-06 10:28 ` [PATCH v5 1/9] phy: phy-mt65xx-usb3: improve RX detection stable time Kishon Vijay Abraham I
     [not found]   ` <de1b9870-d325-e97a-a2f0-bd355c70356c-l0cyMroinI0@public.gmane.org>
2017-04-06 10:49     ` Chunfeng Yun
2017-05-10  9:48     ` Matthias Brugger

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