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ARM: dts: imx: b650v3: Calibrate USB PHY to pass eye diagram test

PATCH New Jaret Cantu 2 participants 2 messages Sep 14, 2016 – Oct 23, 2016

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PATCH 1/1 ARM: dts: imx: b650v3: Calibrate USB PHY to pass eye diagram test

Calibrate the USB PHY TX settings to pass the eye diagram signal integrity test. The settings are taken from the i.MX6 reference manual's recommended configuration for USB certification (66.2.6).

---
 arch/arm/boot/dts/imx6q-b650v3.dts |    6 ++++++
 1 file changed, 6 insertions(+)
arch/arm/boot/dts/imx6q-b650v3.dts +6 -0
index 33cb71a..c266bd2 100644
@@ -89,3 +89,9 @@
 		};
 	};
 };
+
+&usbphy1 {
+	fsl,tx-cal-45-dn-ohms = <55>;
+	fsl,tx-cal-45-dp-ohms = <55>;
+	fsl,tx-d-cal = <100>;
+};
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1.7.10.4
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PATCH 1/1 ARM: dts: imx: b650v3: Calibrate USB PHY to pass eye diagram test

Quoted 5 lines · Jaret Cantu

Calibrate the USB PHY TX settings to pass the eye diagram signal integrity test. The settings are taken from the i.MX6 reference manual's recommended configuration for USB certification (66.2.6).

Applied, thanks.