netdev - Re: [PATCH RFC v2 0/4] wifi: ath10k: support board-specific firmware overrides

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Date: Thu, 7 Mar 2024 10:22:53 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Jeff Johnson <quic_jjohnson@...cinc.com>
Cc: Kalle Valo <kvalo@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, 
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH RFC v2 0/4] wifi: ath10k: support board-specific firmware overrides

On Thu, 7 Mar 2024 at 00:25, Jeff Johnson <quic_jjohnson@...cinc.com> wrote:
>
> On 3/6/2024 6:23 AM, Dmitry Baryshkov wrote:
> > After some thought, I'd suggest to follow approach taken by the rest
> > of qcom firmware:
> > put a default (accepted by non-secured hardware) firmware to SoC dir
> > and then put a vendor-specific firmware into subdir. If any of such
> > vendors appear, we might even implement structural fallback: first
> > look into sdm845/Google/blueline, then in sdm845/Google, sdm845/ and
> > finally just under hw1.0.
>
> are there existing examples in linux-firmware?

Yes. QCM2290 / QRB4210 platforms have "updated" wlanmdsp.mbn file,
which actually prompted us to work on these overrides. I have opened
the MR against linux-firmware, marked as draft for now, until all
discussions are finished:

https://gitlab.com/kernel-firmware/linux-firmware/-/merge_requests/165

> or is the whole point being only the default firmware is in
> linux-firmware and vendors would follow this pattern if they add their
> own firmware?

Unfortunately not.

-- 
With best wishes
Dmitry