* [PATCH] arm64: dts: allwinner: sun50i-a64-olinuxino: Add RX delay
@ 2026-08-15 0:53 Roman Riabenko
0 siblings, 0 replies; only message in thread
From: Roman Riabenko @ 2026-08-15 0:53 UTC (permalink / raw)
To: wens, jernej.skrabec, samuel
Cc: andre.przywara, robh, krzk+dt, conor+dt, devicetree,
linux-arm-kernel, linux-sunxi, Roman Riabenko
The Ethernet on Olimex A64-OlinuXino computers requires an RX delay
greater than 0. If the value is not set or is 0, packet loss in the
downlink direction is severe enough to interfere with downloads and
disrupt software installation.
The range of acceptable values is wide. The vendor has been applying
200 ps in its downstream DTs since 2021. This patch matches that
common practice.
Signed-off-by: Roman Riabenko <roman@riabenko.com>
---
arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
index fd3794678c33..6c8b79c257b9 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts
@@ -106,6 +106,7 @@ &emac {
phy-handle = <&ext_rgmii_phy>;
phy-supply = <®_dcdc1>;
allwinner,tx-delay-ps = <600>;
+ allwinner,rx-delay-ps = <200>;
status = "okay";
};
--
2.54.0
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2026-08-15 0:55 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-15 0:53 [PATCH] arm64: dts: allwinner: sun50i-a64-olinuxino: Add RX delay Roman Riabenko
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox