Subject: Re: [PATCH v4 2/2] arm64: dts: imx8dxl: Add SolidRun SoM and HummingBoard

From: Josua Mayer <[email-masked]>
Date: Tue, 12 May 2026 10:27:02 +0000

Hi Andrew,

Am 11.05.26 um 15:29 schrieb Andrew Lunn:
> On Mon, May 11, 2026 at 02:24:38PM +0300, Vladimir Oltean wrote:
>> On Mon, May 11, 2026 at 12:11:31PM +0200, Josua Mayer wrote:
>>> +&eqos {
>>> +	/* delays are added by connected ethernet-switch cpu port */
>>> +	phy-mode = "rgmii";
> For ethernet-phy combinations i'm pretty strict, but i'm more
> forgiving when switches are involved.
>
> If rx/tx-internal-delays-ps work, that would be better, but i'm
> willing to accept this, with the comment in place.
Only some stmmac driver variants handle delays, dwmac-imx is not one
of them. it cares neither for phy-mode nor rx/tx-internal-delay-ps.

So I wouldn't mind putting instead

phy-mode = "rgmii-id";
rx-internal-delay-ps = <0>;
tx-internal-delay-ps = <0>;

with the same comment, as long as it is more correct.