From: Russell King <rmk+kernel@armlinux.org.uk>
To: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org, Sascha Hauer <s.hauer@pengutronix.de>,
Rob Herring <robh+dt@kernel.org>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: imx6-sr-som: increase at8035 PHY gigabit Tw parameter
Date: Fri, 15 Jan 2021 23:36:44 +0000 [thread overview]
Message-ID: <E1l0Ye4-0002pq-CQ@rmk-PC.armlinux.org.uk> (raw)
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>
---
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/arm/boot/dts/imx6qdl-sr-som.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/imx6qdl-sr-som.dtsi b/arch/arm/boot/dts/imx6qdl-sr-som.dtsi
index 1d1f9ec27045..fd387960a2c9 100644
--- a/arch/arm/boot/dts/imx6qdl-sr-som.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sr-som.dtsi
@@ -69,10 +69,12 @@
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>;
};
};
};
--
2.20.1
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next reply other threads:[~2021-01-15 23:38 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 7:07 ` [PATCH] ARM: dts: imx6-sr-som: increase at8035 PHY gigabit Tw parameter Shawn Guo
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