From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx> 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 boards that have this switch. This is already the case on all MT7986 boards here, so use hexadecimal numbering and align the switch node name with the reg value. Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx> --- arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts | 4 ++-- arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts | 4 ++-- arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts index e04b1c0c0ebb..2f92f8cfd8a3 100644 --- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts +++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts @@ -200,9 +200,9 @@ mdio: mdio-bus { }; &mdio { - switch: switch@31 { + switch: switch@1f { compatible = "mediatek,mt7531"; - reg = <31>; + reg = <0x1f>; interrupt-controller; #interrupt-cells = <1>; interrupts-extended = <&pio 66 IRQ_TYPE_LEVEL_HIGH>; diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts index 5d8e3d3f6c20..47f75ece1872 100644 --- a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts +++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts @@ -84,9 +84,9 @@ mdio: mdio-bus { }; &mdio { - switch: switch@0 { + switch: switch@1f { compatible = "mediatek,mt7531"; - reg = <31>; + reg = <0x1f>; reset-gpios = <&pio 5 0>; }; }; diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts index 58f77d932429..5148a69f4729 100644 --- a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts +++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts @@ -61,9 +61,9 @@ mdio: mdio-bus { #address-cells = <1>; #size-cells = <0>; - switch@0 { + switch@1f { compatible = "mediatek,mt7531"; - reg = <31>; + reg = <0x1f>; reset-gpios = <&pio 5 0>; ports { -- 2.40.1