* [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter
@ 2021-01-15 23:36 Russell King
2021-01-29 6:49 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Russell King @ 2021-01-15 23:36 UTC (permalink / raw)
To: Shawn Guo; +Cc: Li Yang, Rob Herring, linux-arm-kernel, devicetree
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] arm64: dts: lx2160a-cex7: increase at8035 PHY gigabit Tw parameter
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
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2021-01-29 6:49 UTC (permalink / raw)
To: Russell King; +Cc: Li Yang, Rob Herring, linux-arm-kernel, devicetree
On Fri, Jan 15, 2021 at 11:36:39PM +0000, Russell King wrote:
> 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>
Applied, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-01-29 6:50 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
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
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).