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

Igor Opaniuk
2019-03-29T11:25:14Z

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

On Fri, Mar 29, 2019 at 12:25 AM Marcel Ziswiler <marcel@ziswiler.com> wrote:
>
> From: Marcel Ziswiler <marcel.ziswiler@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@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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