netdev - Re: [PATCH net-next 1/5] arm64: dts: ls1043a-qds: switch to new fixed-link binding

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Message-ID: <7b5a01ae-f3f1-4029-8b43-87861a8f8b8f@lunn.ch>
Date: Tue, 2 Sep 2025 00:47:03 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Heiner Kallweit <hkallweit1@...il.com>
Cc: "Russell King (Oracle)" <linux@...linux.org.uk>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Patrice Chotard <patrice.chotard@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	David Miller <davem@...emloft.net>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 1/5] arm64: dts: ls1043a-qds: switch to new
 fixed-link binding

> Usage of the deprecated binding was added to this dt file with ab9d8032dbd0
> ("arm64: dts: ls1043a-qds: add mmio based mdio-mux support") in 2022.
> At that time the binding had been marked deprecated for years already.
> I think it would be good if dtc would warn already if a deprecated
> binding is detected, so that CI can complain.

I don't think the DTC compiler can help. It does not use the .yaml
files. You can compile a dtc file to dtb without any outside help.

What i think we need is 'make dtbs_check', with some additional flags,
like W=2, looking for such deprecated properties being used.

	Andrew