From 6195b626bbb76415409d0eb4f5f9547cc2765ee0 Mon Sep 17 00:00:00 2001 From: Siddharth Vadapalli Date: Mon, 23 Feb 2026 16:24:15 +0530 Subject: [PATCH] arm64: dts: ti: k3-j721e-common-proc-board: add ti,min-output-impedance The default impedance for the MAC I/O lines from the DP83867 Ethernet PHY is 50 Ohm. Based on the board PCB traces, this impedance is relatively higher than expected, resulting in CRC errors for packets being transmitted and received. Hence, add the "ti,min-output-impedance" device-tree property to set the impedance to its lowest possible value of 35 Ohm as described in the DP83867 Datasheet [0]. [0]: https://www.ti.com/lit/ds/symlink/dp83867e.pdf Signed-off-by: Siddharth Vadapalli Link: https://patch.msgid.link/20260223105448.1110428-5-s-vadapalli@ti.com Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts index 47702fb279a4..53e7fbcef52b 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts +++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts @@ -777,6 +777,7 @@ phy0: ethernet-phy@0 { reg = <0>; ti,rx-internal-delay = ; ti,fifo-depth = ; + ti,min-output-impedance; }; };