linux-kernel - Re: [PATCHv1 2/4] ARM: dts: imx: ba16: improve PHY information

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Date:   Mon, 8 Mar 2021 08:38:28 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com
Subject: Re: [PATCHv1 2/4] ARM: dts: imx: ba16: improve PHY information

On Tue, Feb 23, 2021 at 07:33:44PM +0100, Sebastian Reichel wrote:
> Add PHY voltage supply information fixing the following kernel message:
> 
> 2188000.ethernet supply phy not found, using dummy regulator
> 
> Also add PHY clock information to avoid depending on the bootloader
> programming correct values.
> 
> The bootloader also sets some reserved registers in the PHY as
> advised by Qualcomm, which is not supported by the bindings/kernel
> driver, so the reset GPIO has not been added intentionally.
> 
> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> ---
>  arch/arm/boot/dts/imx6q-ba16.dtsi | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6q-ba16.dtsi b/arch/arm/boot/dts/imx6q-ba16.dtsi
> index 4793ef5171aa..a684d999e605 100644
> --- a/arch/arm/boot/dts/imx6q-ba16.dtsi
> +++ b/arch/arm/boot/dts/imx6q-ba16.dtsi
> @@ -177,6 +177,18 @@ &fec {
>  	pinctrl-0 = <&pinctrl_enet>;
>  	phy-mode = "rgmii-id";
>  	status = "okay";
> +	phy-supply = <&reg_3p3v>;
> +	phy-handle = <&phy0>;

Please keep 'status' at end.

Shawn

> +
> +	mdio {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		phy0: ethernet-phy@4 {
> +			reg = <4>;
> +			qca,clk-out-frequency = <125000000>;
> +		};
> +	};
>  };
>  
>  &hdmi {
> -- 
> 2.30.0
>