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. Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx> --- arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts | 4 ++-- arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts index 224bb289660c..811b227d6f50 100644 --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts @@ -149,9 +149,9 @@ mdio: mdio-bus { #address-cells = <1>; #size-cells = <0>; - switch@0 { + switch@1f { compatible = "mediatek,mt7531"; - reg = <0>; + reg = <0x1f>; interrupt-controller; #interrupt-cells = <1>; interrupts-extended = <&pio 53 IRQ_TYPE_LEVEL_HIGH>; diff --git a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts index 41629769bdc8..3c2423cb38fd 100644 --- a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts +++ b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts @@ -134,9 +134,9 @@ mdio-bus { #address-cells = <1>; #size-cells = <0>; - switch@0 { + switch@1f { compatible = "mediatek,mt7531"; - reg = <0>; + reg = <0x1f>; reset-gpios = <&pio 54 0>; ports { -- 2.40.1