[PATCH 2/2] ARM: dts: meson8b-odroidc1: ethernet support

[Jerome Brunet]

On Tue, 2018-01-16 at 01:34 +0100, Emiliano Ingrassia wrote:
> The Odroid-C1+ board is equipped with an RTL8211F ethernet PHY
> which supports 10/100/1000 Mbps ethernet.
> This patch adds the PHY description to the board DT,
> setting the maximum speed to 1 Gbps, and enables the ethernet controller.
> 
> Signed-off-by: Emiliano Ingrassia <ingrassia at epigenesys.com>
> ---
>  arch/arm/boot/dts/meson8b-odroidc1.dts | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
> index 9ff6ca4e20d0..3766f6fd1882 100644
> --- a/arch/arm/boot/dts/meson8b-odroidc1.dts
> +++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
> @@ -99,3 +99,35 @@
>  &usb1 {
>  	status = "okay";
>  };
> +
> +&ethmac {
> +	status = "okay";
> +
> +	snps,reset-gpio = <&gpio GPIOH_4 GPIO_ACTIVE_HIGH>;
> +	snps,reset-active-low;
> +	snps,reset-delays-us = <0 10000 30000>;
> +
> +	pinctrl-0 = <&eth_rgmii_pins>;
> +	pinctrl-names = "default";
> +
> +	phy-mode = "rgmii";
> +	phy-handle = <&eth_phy>;
> +	amlogic,tx-delay-ns = <4>;
> +
> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		eth_phy: ethernet-phy at 0 {
> +			/* ethernet PHY RTL8211F */
> +			compatible = "ethernet-phy-id001c.c916",
> +				     "ethernet-phy-ieee802.3-c22";
> +			reg = <0>;
> +			max-speed = <1000>;
> +			eee-broken-1000t;

You should test against the issue before adding this flags.
Did you have any hang issue while doing iperf test at Gbit speed ? It happens
quickly if you are impacted as the c2 is.

> +			interrupt-parent = <&gpio_intc>;
> +			interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
> +		};
> +	};
> +};