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charset="utf-8" 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 --- arch/arm64/boot/dts/ti/k3-am642-evm.dts | 1 + arch/arm64/boot/dts/ti/k3-am642-sk.dts | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/= ti/k3-am642-evm.dts index 88093ab74502..bc4347cf7114 100644 --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts @@ -601,6 +601,7 @@ cpsw3g_phy0: ethernet-phy@0 { reg =3D <0>; ti,rx-internal-delay =3D ; ti,fifo-depth =3D ; + ti,min-output-impedance; }; }; =20 diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/t= i/k3-am642-sk.dts index 34bfa99bd4b8..d28a38c87f32 100644 --- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts @@ -519,12 +519,14 @@ cpsw3g_phy0: ethernet-phy@0 { reg =3D <0>; ti,rx-internal-delay =3D ; ti,fifo-depth =3D ; + ti,min-output-impedance; }; =20 cpsw3g_phy1: ethernet-phy@1 { reg =3D <1>; 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charset="utf-8" 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 --- arch/arm64/boot/dts/ti/k3-am654-base-board.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/bo= ot/dts/ti/k3-am654-base-board.dts index e0262c2743eb..ca1300e13093 100644 --- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts +++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts @@ -583,6 +583,7 @@ phy0: ethernet-phy@0 { reg =3D <0>; ti,rx-internal-delay =3D ; ti,fifo-depth =3D ; + ti,min-output-impedance; }; }; =20 --=20 2.51.1 From nobody Fri Apr 17 06:15:33 2026 Received: from SA9PR02CU001.outbound.protection.outlook.com (mail-southcentralusazon11013022.outbound.protection.outlook.com [40.93.196.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A6AE356A24; Mon, 23 Feb 2026 10:53:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" 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 --- arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/a= rm64/boot/dts/ti/k3-j7200-common-proc-board.dts index 3e5efdfe87f1..54dea36b153b 100644 --- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts @@ -331,6 +331,7 @@ phy0: ethernet-phy@0 { reg =3D <0>; ti,rx-internal-delay =3D ; ti,fifo-depth =3D ; + ti,min-output-impedance; }; }; =20 --=20 2.51.1 From nobody Fri Apr 17 06:15:33 2026 Received: from SJ2PR03CU001.outbound.protection.outlook.com (mail-westusazon11012048.outbound.protection.outlook.com [52.101.43.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE17C3502A9; Mon, 23 Feb 2026 10:53:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" 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 --- 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/a= rm64/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 =3D <0>; ti,rx-internal-delay =3D ; ti,fifo-depth =3D ; + ti,min-output-impedance; }; }; =20 --=20 2.51.1