Am Donnerstag, 14. März 2024, 13:24:35 CET schrieb Arınç ÜNAL via B4 Relay: > 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 Banana Pi BPI-R2 Pro that > has this switch. > > Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx> Fixes: c1804463e5c6 ("arm64: dts: rockchip: Add mt7531 dsa node to BPI-R2-Pro board") > --- > arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts > index 7b5f3904ef61..03d6d920446a 100644 > --- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts > +++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts > @@ -525,9 +525,9 @@ &mdio0 { > #address-cells = <1>; > #size-cells = <0>; > > - switch@0 { > + switch@1f { > compatible = "mediatek,mt7531"; > - reg = <0>; > + reg = <0x1f>; > > ports { > #address-cells = <1>; > > --- > base-commit: 0276d797531ea2d1865a04fbe54c659608f5788f > change-id: 20240314-for-rockchip-mt7531-phy-address-ba6c2fff485f > > Best regards, >