linux-kernel - Re: [PATCH] arm64: dts: imx8mp: Update Fast ethernet PHY MDIO addresses to match DH i.MX8MP DHCOM rev.200

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Date: Fri, 28 Jun 2024 01:32:05 +0200
From: Marek Vasut <marex@...x.de>
To: Andrew Lunn <andrew@...n.ch>
Cc: linux-arm-kernel@...ts.infradead.org, Conor Dooley <conor+dt@...nel.org>,
 Fabio Estevam <festevam@...il.com>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Pengutronix Kernel Team <kernel@...gutronix.de>,
 Rob Herring <robh@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, kernel@...electronics.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mp: Update Fast ethernet PHY MDIO
 addresses to match DH i.MX8MP DHCOM rev.200

On 6/27/24 9:06 PM, Andrew Lunn wrote:
> On Thu, Jun 27, 2024 at 02:58:33AM +0200, Marek Vasut wrote:
>> The production DH i.MX8MP DHCOM SoM rev.200 uses updated PHY MDIO addresses
>> for the Fast ethernet PHYs. Update the base SoM DT to cater for this change.
> 
> Where did the original values come from?

Preproduction rev.100 SoM .

> Did they never work?

They did work on rev.100 SoM .

> A pre-production device?

Yes

> Do we need to be worried about regressions?

No, it is only rev.200 or newer hardware that is shipping.

> It would be good if the commit message explained why this is safe.

Fixed in V2, thanks.