[PATCH v2] ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address

[Nobuhiro Iwamatsu]

Hi Dinh,

Could you check and apply this patch?

Thanks,
  Nobuhiro

2024年11月21日(木) 16:13 Nobuhiro Iwamatsu <iwamatsu at nigauri.org>:
>
> 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 at vger.kernel.org # 6.3+
> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu at 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 at 0 {
> -                       reg = <0>;
> +               compatible = "snps,dwmac-mdio";
> +
> +               phy0: ethernet-phy at 4 {
> +                       reg = <4>;
>                         rxd0-skew-ps = <0>;
>                         rxd1-skew-ps = <0>;
>                         rxd2-skew-ps = <0>;
> --
> 2.45.2
>


-- 
Nobuhiro Iwamatsu
   iwamatsu at {nigauri.org / debian.org / kernel.org}
   GPG ID: 32247FBB40AD1FA6