linux-kernel - Re: [PATCH V4 2/3] arm64: dts: imx8ulp: Add the fec support

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Date:   Wed, 17 Aug 2022 17:47:08 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     wei.fang@....com
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, s.hauer@...gutronix.de,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, peng.fan@....com,
        ping.bai@....com, sudeep.holla@....com,
        linux-arm-kernel@...ts.infradead.org, aisheng.dong@....com
Subject: Re: [PATCH V4 2/3] arm64: dts: imx8ulp: Add the fec support

On Wed, Jul 27, 2022 at 12:38:52AM +1000, wei.fang@....com wrote:
> From: Wei Fang <wei.fang@....com>
> 
> Add the fec support on i.MX8ULP platforms.
> 
> Signed-off-by: Wei Fang <wei.fang@....com>
> Reviewed-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
> ---
> V2 change:
> Remove the external clocks which is related to specific board.
> V3 change:
> No change.
> V4 Change:
> Add Reviewed-by tag.
> ---
>  arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> index 60c1b018bf03..3e8a1e4f0fc2 100644
> --- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> @@ -16,6 +16,7 @@ / {
>  	#size-cells = <2>;
>  
>  	aliases {
> +		ethernet0 = &fec;
>  		gpio0 = &gpiod;
>  		gpio1 = &gpioe;
>  		gpio2 = &gpiof;
> @@ -365,6 +366,16 @@ usdhc2: mmc@...f0000 {
>  				bus-width = <4>;
>  				status = "disabled";
>  			};
> +
> +			fec: ethernet@...50000 {
> +				compatible = "fsl,imx8ulp-fec", "fsl,imx6ul-fec", "fsl,imx6q-fec";

Since imx8ulp-fec is compatible with imx6ul-fec, what's the point of
having imx6q-fec in there?  It can be dropped, I guess?

Shawn

> +				reg = <0x29950000 0x10000>;
> +				interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
> +				interrupt-names = "int0";
> +				fsl,num-tx-queues = <1>;
> +				fsl,num-rx-queues = <1>;
> +				status = "disabled";
> +			};
>  		};
>  
>  		gpioe: gpio@...00080 {
> -- 
> 2.25.1
>