linux-kernel - Re: [PATCH] ARM: dts: rockchip: add ethernet phy node for tinker board

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Message-ID: <1871177.hjLhdHVgcu@phil>
Date:   Sat, 22 Jun 2019 10:33:57 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Katsuhiro Suzuki <katsuhiro@...suster.net>
Cc:     linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: rockchip: add ethernet phy node for tinker board

Hi,

Am Freitag, 21. Juni 2019, 20:00:17 CEST schrieb Katsuhiro Suzuki:
> This patch adds missing mdio and ethernet PHY nodes for rk3328 ASUS
> tinker board.
> 
> Signed-off-by: Katsuhiro Suzuki <katsuhiro@...suster.net>

just for my understanding, which problem does this solve?
Normally the gmac can establish connections just fine on
the rk3288 by probing the phy in the automatic way.

And I also don't see any additional properties like phy
interrupt line below.


Thanks
Heiko

> ---
>  arch/arm/boot/dts/rk3288-tinker.dtsi | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/rk3288-tinker.dtsi b/arch/arm/boot/dts/rk3288-tinker.dtsi
> index 293576869546..3190817e8d5d 100644
> --- a/arch/arm/boot/dts/rk3288-tinker.dtsi
> +++ b/arch/arm/boot/dts/rk3288-tinker.dtsi
> @@ -117,6 +117,7 @@
>  	assigned-clocks = <&cru SCLK_MAC>;
>  	assigned-clock-parents = <&ext_gmac>;
>  	clock_in_out = "input";
> +	phy-handle = <&phy0>;
>  	phy-mode = "rgmii";
>  	phy-supply = <&vcc33_lan>;
>  	pinctrl-names = "default";
> @@ -127,6 +128,17 @@
>  	tx_delay = <0x30>;
>  	rx_delay = <0x10>;
>  	status = "ok";
> +
> +	mdio0 {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		phy0: ethernet-phy@0 {
> +			compatible = "ethernet-phy-ieee802.3-c22";
> +			reg = <0>;
> +		};
> +	};
>  };
>  
>  &gpu {
>