From 371a8dd6fa75ef3682bd8398c3e32b354d0e2677 Mon Sep 17 00:00:00 2001 From: Jaret Cantu Date: Wed, 14 Sep 2016 17:14:49 -0400 Subject: [PATCH] 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). Signed-off-by: Jaret Cantu Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-b650v3.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/imx6q-b650v3.dts b/arch/arm/boot/dts/imx6q-b650v3.dts index d85388725426..1dcaee23ed9c 100644 --- a/arch/arm/boot/dts/imx6q-b650v3.dts +++ b/arch/arm/boot/dts/imx6q-b650v3.dts @@ -98,3 +98,9 @@ line-name = "PCA9539-P05"; }; }; + +&usbphy1 { + fsl,tx-cal-45-dn-ohms = <55>; + fsl,tx-cal-45-dp-ohms = <55>; + fsl,tx-d-cal = <100>; +}; -- 2.20.1