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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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WARNING: multiple messages have this Message-ID (diff)
From: Russell King <rmk+kernel@armlinux.org.uk>
To: Shawn Guo <shawnguo@kernel.org>
Cc: Li Yang <leoyang.li@nxp.com>, Rob Herring <robh+dt@kernel.org>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
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


             reply	other threads:[~2021-01-15 23:40 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-15 23:36 Russell King [this message]
2021-01-15 23:36 ` [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter Russell King
2021-01-29  6:49 ` Shawn Guo
2021-01-29  6:49   ` Shawn Guo

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