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arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter

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Increase the SmartEEE Tw parameter for Atheros PHYs to stop gigabit
links from sporadically dropping. Testing on this platform shows that
a value of 24 results in a stable link, whereas 23 or below has the
occasional drop.

Tested with a Netgear GS116 unmanaged switch link partner with Cat 5e
cabling.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Russell King
2021-01-15 23:36:39 +00:00
committed by Shawn Guo
parent c0b70f05c8
commit 22171213e5
1 changed files with 1 additions and 0 deletions
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arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
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@@ -40,6 +40,7 @@ &emdio1 {
rgmii_phy1: ethernet-phy@1 {
reg = <1>;
qca,smarteee-tw-us-1g = <24>;
};
};