From: Russell King <rmk+kernel@armlinux.org.uk>
To: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Li Yang <leoyang.li@nxp.com>
Subject: [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter
Date: Fri, 15 Jan 2021 23:36:39 +0000 [thread overview]
Message-ID: <E1l0Ydz-0002pe-7p@rmk-PC.armlinux.org.uk> (raw)
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>
---
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@1 {
reg = <1>;
+ qca,smarteee-tw-us-1g = <24>;
};
};
--
2.20.1
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next reply other threads:[~2021-01-15 23:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 23:36 Russell King [this message]
2021-01-29 6:49 ` [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter Shawn Guo
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