openwrt/target/linux/rockchip/patches-6.1/031-v6.10arm64-dts-rockchip-set-PHY-address-of-MT7531-switch-.patch
Antonio Flores dcd2367349 kernel/rockchip: Restore kernel files for v6.1
This is an automatically generated commit which aids following Kernel patch history,
as git will see the move and copy as a rename thus defeating the purpose.

See: https://lists.openwrt.org/pipermail/openwrt-devel/2023-October/041673.html
for the original discussion.

Signed-off-by: Antonio Flores <antflores627@gmail.com>
2024-05-07 00:17:12 +02:00

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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>;