1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/rockchip/patches-6.1/031-v6.10arm64-dts-rockchip-set-PHY-address-of-MT7531-switch-.patch b/target/linux/rockchip/patches-6.1/031-v6.10arm64-dts-rockchip-set-PHY-address-of-MT7531-switch-.patch
new file mode 100644
index 0000000000..6a5622b813
--- /dev/null
+++ b/target/linux/rockchip/patches-6.1/031-v6.10arm64-dts-rockchip-set-PHY-address-of-MT7531-switch-.patch
@@ -0,0 +1,40 @@
+From a2ac2a1b02590a22a236c43c455f421cdede45f5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
+Date: Thu, 14 Mar 2024 15:24:35 +0300
+Subject: [PATCH] arm64: dts: rockchip: set PHY address of MT7531 switch to
+ 0x1f
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The MT7531 switch listens on PHY address 0x1f on an MDIO bus. I've got two
+findings that support this. There's no bootstrapping option to change the
+PHY address of the switch. The Linux driver hardcodes 0x1f as the PHY
+address of the switch. So the reg property on the device tree is currently
+ignored by the Linux driver.
+
+Therefore, describe the correct PHY address on Banana Pi BPI-R2 Pro that
+has this switch.
+
+Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Fixes: c1804463e5c6 ("arm64: dts: rockchip: Add mt7531 dsa node to BPI-R2-Pro board")
+Link: https://lore.kernel.org/r/20240314-for-rockchip-mt7531-phy-address-v1-1-743b5873358f@arinc9.com
+Signed-off-by: Heiko Stuebner <heiko@sntech.de>
+---
+ arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
++++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
+@@ -521,9 +521,9 @@
+ 	#address-cells = <1>;
+ 	#size-cells = <0>;
+ 
+-	switch@0 {
++	switch@1f {
+ 		compatible = "mediatek,mt7531";
+-		reg = <0>;
++		reg = <0x1f>;
+ 
+ 		ports {
+ 			#address-cells = <1>;