On SoCFPGA/Sodia board, mdio bus cannot be probed, so the PHY cannot be found and the network device does not work.

``` stmmaceth ff702000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19) ```

To probe the mdio bus, add "snps,dwmac-mdio" as compatible string of the mdio bus. Also the PHY address connected to this board is 4. Therefore, change to 4.

Cc: stable@vger.kernel.org # 6.3+ Signed-off-by: Nobuhiro Iwamatsu iwamatsu@nigauri.org --- v2: Update commit message from 'ID' to 'address'. Drop Fixes tag, because that commit is not the cause.

arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts index ce0d6514eeb571..e4794ccb8e413f 100644 --- a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts +++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts @@ -66,8 +66,10 @@ &gmac1 { mdio0 { #address-cells = <1>; #size-cells = <0>; - phy0: ethernet-phy@0 { - reg = <0>; + compatible = "snps,dwmac-mdio"; + + phy0: ethernet-phy@4 { + reg = <4>; rxd0-skew-ps = <0>; rxd1-skew-ps = <0>; rxd2-skew-ps = <0>;