From: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date: Thu, 28 Nov 2024 04:11:19 +0000 (+0100)
Subject: arm64: renesas: Disable AVB1 and AVB2 on R8A779G0 V4H White Hawk board
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arm64: renesas: Disable AVB1 and AVB2 on R8A779G0 V4H White Hawk board

The U-Boot is currently not capable of handling ethernet-phy-ieee802.3-c45
PHYs correctly, and also does not handle MDIO bus wide reset-gpios property.
Until proper C45 PHY support lands in U-Boot, disable AVB1/AVB2 interfaces.
This only disables the two MACs with 88Q2110/88Q2112 100/1000BASE-T1 PHYs
on ethenet sub-board, the main board AVB0 ethernet is unaffected.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---

diff --git a/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi b/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
index c3704d789e..531767cfdb 100644
--- a/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
@@ -13,6 +13,14 @@
 	};
 };
 
+&avb1 {
+	status = "disabled";
+};
+
+&avb2 {
+	status = "disabled";
+};
+
 &rpc {
 	flash@0 {
 		spi-tx-bus-width = <1>;