linux-kernel - Re: [RFC PATCH v2] arm64: dts: qcom: sm8750-mtp: Add WiFi and Bluetooth

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Message-ID: <ibitgekdjsktpvr6zmouuhgzcbfjfeuv4l4zsl6vszv4hauug5@one6zo6gdykb>
Date: Tue, 12 Aug 2025 14:00:06 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2] arm64: dts: qcom: sm8750-mtp: Add WiFi and
 Bluetooth

On Mon, Aug 11, 2025 at 04:40:09PM +0200, Krzysztof Kozlowski wrote:
> On 11/08/2025 16:33, Dmitry Baryshkov wrote:
> > On Mon, Aug 11, 2025 at 04:25:47PM +0200, Krzysztof Kozlowski wrote:
> >> On 11/08/2025 16:22, Dmitry Baryshkov wrote:
> >>> On Mon, Aug 11, 2025 at 03:10:56PM +0200, Krzysztof Kozlowski wrote:
> >>>> MTP8750 rev 2.0 (power grid v8) boards come as two different variants
> >>>> with different WiFi chips: WCN7850 and WCN786x.  WCN7850 is already
> >>>> supported by the kernel, but WCN786x is not.  Both of the board variants
> >>>> are considered newest revisions and the difference is only in MCN
> >>>> numbers and internal codenames.
> >>>
> >>> Are they soldered on board, installed via add-on cards or installed via
> >>> M.2 slot?
> >>
> >> This is MTP, so same answer as other MTPs - these are replaceable parts,
> >> just like you can replace display or modem.
> >>
> >>>
> >>> Are they going to be somewhat compatible (e.g. on the BT side?)
> >>
> >> No clue, you need to ask Qualcomm people - it's their hardware.
> > 
> > And you (hopefully) have access to the docs.
> 
> 
> No, fought with that for 1 year, got some basic docs only. It is very
> difficult to get any access to these docs. I assume you mean the MTP board.
> 
> If you mean Bluetooth or WiFi - I have 0 access there.

I mean WiFi / BT. Then you can ask Jeff or a corresponding BT maintainer
to provide necessary details. You make it sound as if you are not a part
of the system. You are. You can talk to necessary people within
Qualcomm.

-- 
With best wishes
Dmitry