linux-kernel - Re: [PATCH net-next v2] dt-bindings: net: ath11k: document the inputs of the ath11k on WCN6855

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Message-ID: <CAMRc=Mc4AZR3aztmODtpgLt3P63=WGGfupjNSSJdFseH=pAhtg@mail.gmail.com>
Date: Tue, 24 Sep 2024 19:07:35 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Jeff Johnson <quic_jjohnson@...cinc.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, 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@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Jeff Johnson <jjohnson@...nel.org>, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	ath11k@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH net-next v2] dt-bindings: net: ath11k: document the inputs
 of the ath11k on WCN6855

On Tue, Sep 24, 2024 at 6:46 PM Jeff Johnson <quic_jjohnson@...cinc.com> wrote:
>
> On 9/24/2024 1:06 AM, Krzysztof Kozlowski wrote:
> > On 20/09/2024 23:02, Jeff Johnson wrote:
> >> Again, since I'm a DT n00b:
> >> Just to make sure I understand, you are saying that with this change any
> >> existing .dts/.dtb files will still work with an updated driver, so the new
> >> properties are not required to be populated on existing devices.
> >
> > Did you folks rejected patches acked by DT maintainers on basis of not
> > understanding DT at all?
>
> I personally have not rejected any DT patches. Nor have I accepted any.
> I'm deferring to Kalle.
>
> >> However a new driver with support for these properties will utilize them when
> >> they are present, and the current ath11k .dts files will need to be updated to
> >
> > It is not related to drivers at all. Nothing in this thread is related
> > to drivers.
> >
> > Can we entirely drop the drivers from the discussion?
>
> I brought up drivers since in the discussion there was concern that this DT
> change would potentially break existing devices that have a DTS that defines
> qcom,ath11k-calibration-variant, and I wanted clarification on that point.
>
> /jeff

How could this happen? DT schema is used to validate device-tree
sources but is not used by the kernel code in any way. I've said it
several times over the course of this and the previous (qca6390)
discussion.

Bartosz