[U-Boot] [PATCH v1] colibri_vf: fix ethernet by adding explicit phy node

[Igor Opaniuk]

Reviewed-by: Igor Opaniuk <igor.opaniuk at toradex.com>

On Fri, Mar 29, 2019 at 12:25 AM Marcel Ziswiler <marcel at ziswiler.com> wrote:
>
> From: Marcel Ziswiler <marcel.ziswiler at toradex.com>
>
> The implicit fallback mechanism for searching the whole MDIO bus for at
> least one PHY has been gone with the following commit b882005a18de
> ("drivers/net/fec: phy_init: remove redundant logic"). This lead to the
> Ethernet driver erroring out as follows:
>
> Net:   Could not get PHY for FEC0: addr -19
> eth-1: fec at 400d1000
> Colibri VFxx # dhcp
> Could not get PHY for FEC0: addr -19
> Could not get PHY for FEC0: addr -19
> Could not get PHY for FEC0: addr -19
> Could not get PHY for FEC0: addr -19
> No ethernet found.
> Could not get PHY for FEC0: addr -19
> Colibri VFxx #
>
> This commit adds an explicit PHY node which makes it work again.
>
> Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
>
> ---
>
>  arch/arm/dts/vf-colibri.dtsi | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/arch/arm/dts/vf-colibri.dtsi b/arch/arm/dts/vf-colibri.dtsi
> index 5ce17076e9..91ca4e4ddd 100644
> --- a/arch/arm/dts/vf-colibri.dtsi
> +++ b/arch/arm/dts/vf-colibri.dtsi
> @@ -60,11 +60,24 @@
>         status = "okay";
>  };
>
> +/* Ethernet */
>  &fec1 {
>         phy-mode = "rmii";
> +       phy-handle = <&ethphy1>;
>         pinctrl-names = "default";
>         pinctrl-0 = <&pinctrl_fec1>;
>         status = "okay";
> +
> +       mdio {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               ethphy1: ethernet-phy at 1 {
> +                       compatible = "ethernet-phy-ieee802.3-c22";
> +                       max-speed = <100>;
> +                       reg = <1>;
> +               };
> +       };
>  };
>
>  &i2c0 {
> --
> 2.20.1
>
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