linux-kernel - Re: [PATCH net-next v2 10/10] arm64: dts: allwinner: t527: orangepi-4a: Enable Ethernet port

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Message-ID: <3363827.aeNJFYEL58@jernej-laptop>
Date: Wed, 13 Aug 2025 17:28:13 +0200
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
 Jernej Skrabec <jernej@...nel.org>, Samuel Holland <samuel@...lland.org>,
 Chen-Yu Tsai <wens@...nel.org>
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
 linux-kernel@...r.kernel.org, Andre Przywara <andre.przywara@....com>
Subject:
 Re: [PATCH net-next v2 10/10] arm64: dts: allwinner: t527: orangepi-4a:
 Enable Ethernet port

Dne sreda, 13. avgust 2025 ob 16:55:40 Srednjeevropski poletni čas je Chen-Yu Tsai napisal(a):
> From: Chen-Yu Tsai <wens@...e.org>
> 
> On the Orangepi 4A board, the second Ethernet controller, aka the GMAC200,
> is connected to an external Motorcomm YT8531 PHY. The PHY uses an external
> 25MHz crystal, has the SoC's PI15 pin connected to its reset pin, and
> the PI16 pin for its interrupt pin.
> 
> Enable it.
> 
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>

Acked-by: Jernej Skrabec <jernej.skrabec@...il.com>

Best regards,
Jernej

> ---
> 
> Changes since v1:
> - Switch to generic (tx|rx)-internal-delay-ps properties
> ---
>  .../dts/allwinner/sun55i-t527-orangepi-4a.dts | 23 +++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
> index d07bb9193b43..b604d961c4fd 100644
> --- a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
> @@ -15,6 +15,7 @@ / {
>  	compatible = "xunlong,orangepi-4a", "allwinner,sun55i-t527";
>  
>  	aliases {
> +		ethernet0 = &gmac1;
>  		serial0 = &uart0;
>  	};
>  
> @@ -95,11 +96,33 @@ &ehci1 {
>  	status = "okay";
>  };
>  
> +&gmac1 {
> +	phy-mode = "rgmii-id";
> +	phy-handle = <&ext_rgmii_phy>;
> +	phy-supply = <&reg_cldo4>;
> +
> +	tx-internal-delay-ps = <0>;
> +	rx-internal-delay-ps = <300>;
> +
> +	status = "okay";
> +};
> +
>  &gpu {
>  	mali-supply = <&reg_dcdc2>;
>  	status = "okay";
>  };
>  
> +&mdio1 {
> +	ext_rgmii_phy: ethernet-phy@1 {
> +		compatible = "ethernet-phy-ieee802.3-c22";
> +		reg = <1>;
> +		interrupts-extended = <&pio 8 16 IRQ_TYPE_LEVEL_LOW>; /* PI16 */
> +		reset-gpios = <&pio 8 15 GPIO_ACTIVE_LOW>; /* PI15 */
> +		reset-assert-us = <10000>;
> +		reset-deassert-us = <150000>;
> +	};
> +};
> +
>  &mmc0 {
>  	vmmc-supply = <&reg_cldo3>;
>  	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
>