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

[Russell King]

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 at armlinux.org.uk>
---
The corresponding part of this has been merged into net-next:
  https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=e7fa5c80defe079190537fd6b6aecb8866b446a3

 arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
index d87d16460875..6c2eb2583434 100644
--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-cex7.dtsi
@@ -40,6 +40,7 @@
 
 	rgmii_phy1: ethernet-phy at 1 {
 		reg = <1>;
+		qca,smarteee-tw-us-1g = <24>;
 	};
 };
 
-- 
2.20.1