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

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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 <jaret.cantu@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Jaret Cantu 2016-09-14 17:14:49 -04:00 committed by Shawn Guo
parent ebedca04ec
commit 371a8dd6fa
1 changed files with 6 additions and 0 deletions
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6
arch/arm/boot/dts/imx6q-b650v3.dts
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@ -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>;
};