| Message ID | E1l0Ye4-0002pq-CQ@rmk-PC.armlinux.org.uk |
|---|---|
| State | Accepted |
| Commit | b73d538a01305446e843a6be45853cce1438acdd |
| Headers | show |
| Series | ARM: dts: imx6-sr-som: increase at8035 PHY gigabit Tw parameter | expand |
On Fri, Jan 15, 2021 at 11:36:44PM +0000, Russell King wrote: > 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> Applied, thanks.
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>; }; }; };
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(+)