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

[ingrassia@epigenesys.com (Emiliano Ingrassia)]

Hi Jerome,

thanks for the review.

On Tue, Jan 16, 2018 at 11:31:55AM +0100, Jerome Brunet wrote:
> 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@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.
>

Of course I tested for this issue. I experiment a high packet loss
while pinging the board without it.
Should I report this in message log?

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