Commit b73d538a authored Jan 15, 2021 by Russell King Committed by Shawn Guo Jan 29, 2021

ARM: dts: imx6-sr-som: increase at8035 PHY gigabit Tw parameter

Increase the SmartEEE Tw parameter for Atheros PHYs to stop gigabit
links from sporadically dropping. Jon Nettleton found that a value
of 23 was the minimum to give a stable link, but testing with the
Com Express 7 module shows 24 is the minimum - so 23 may still be on
the margins. Use 24 instead for consistency across SolidRun platforms.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

parent 71fa4e04

arch/arm/boot/dts/imx6qdl-sr-som.dtsi

+2 −0

Original line number	Diff line number	Diff line
		@@ -69,11 +69,13 @@ mdio {
		ethernet-phy@0 {
		reg = <0>;
		qca,clk-out-frequency = <125000000>;
		qca,smarteee-tw-us-1g = <24>;
		};

		ethernet-phy@4 {
		reg = <4>;
		qca,clk-out-frequency = <125000000>;
		qca,smarteee-tw-us-1g = <24>;
		};
		};
		};