Re: [PATCH v3 03/11] arm64: dts: freescale: imx8mm-var-som: Update FEC support with MaxLinear PHY

[Frank Li]

On Sat, Mar 07, 2026 at 04:54:39PM +0100, Stefano Radaelli wrote:
> From: Stefano Radaelli <stefano.r@xxxxxxxxxxxxx>
>
> From: Stefano Radaelli <stefano.r@xxxxxxxxxxxxx>
>
> Update the FEC Ethernet controller on the i.MX8MM VAR-SOM to match the
> latest SOM hardware revision using the integrated MaxLinear MXL86110 PHY.
>
> Add the PHY VDDIO supply regulator, adjust reset timings and add a
> pinctrl sleep state for low-power operation.
>
> The PHY LED signals originate on the SOM, but the actual LEDs are part
> of the carrier implementation (RJ45 connector). Move the LED
> configuration to the Symphony carrier device tree, matching the
> evaluation board LED wiring.
>
> The enet_rst GPIO hog on the carrier is kept to ensure a defined
> board-level reset line state during boot.
>
> Wake-on-LAN via magic packet is not supported at the VAR-SOM level and
> is therefore not enabled in the SOM device tree nor in the official
> evaluation carrier board configuration (symphony).
> Designs requiring WoL support may enable it in their own carrier-specific
> device trees if properly integrated at the hardware level.
>
>
> +		enet-rst-hog {
> +			gpio-hog;
> +			gpios = <5 GPIO_ACTIVE_HIGH>;
> +			output-low;
> +			line-name = "enet_rst";
> +		};
> +

Any enet referent to this gpio node, otherwise can't guarantee device
probe order, maybe enet driver probe before gpio. rst is critcial signal.

Frank
>