linux-kernel - Re: [PATCH RFC v3 1/9] libfdt: board-id: Implement board-id scoring

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Date: Tue, 21 May 2024 20:28:01 +0100
From: Conor Dooley <conor@...nel.org>
To: Elliot Berman <quic_eberman@...cinc.com>
Cc: Rob Herring <robh+dt@...nel.org>, Frank Rowand <frowand.list@...il.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Amrit Anand <quic_amrianan@...cinc.com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Caleb Connolly <caleb.connolly@...aro.org>,
	Andy Gross <agross@...nel.org>,
	Doug Anderson <dianders@...omium.org>,
	Simon Glass <sjg@...omium.org>, Chen-Yu Tsai <wenst@...omium.org>,
	Julius Werner <jwerner@...omium.org>,
	"Humphreys, Jonathan" <j-humphreys@...com>,
	Sumit Garg <sumit.garg@...aro.org>,
	Jon Hunter <jonathanh@...dia.org>,
	Michal Simek <michal.simek@....com>,
	boot-architecture@...ts.linaro.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH RFC v3 1/9] libfdt: board-id: Implement board-id scoring

On Tue, May 21, 2024 at 11:37:58AM -0700, Elliot Berman wrote:
> The devicetree spec introduced a mechanism to match devicetree blobs to
> boards using firmware-provided identifiers.

Can you share a link to where the devicetree spec introduced this
mechanism? I don't recall seeing a PR to dt-schema for it nor did a
quick check of the devicetree specification repo show a PR adding it.

What am I missing?

Thanks,
Conor.

> Although the matching can be
> implemented by DTB loaders, having a canonical implementation makes it
> easier to integrate and ensure consistent behavior across ecosystems.
> 
> I've not yet investigated swig/python support for the new functions; I
> would work on that before submitting the patch to libfdt.

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