linux-kernel - Re: [PATCH v2] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x: add Bluetooth support

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Message-ID: <a825ca43-40e2-48c4-8466-a13a94d3bc0a@oldschoolsolutions.biz>
Date: Tue, 24 Jun 2025 12:46:47 +0200
From: Jens Glathe <jens.glathe@...schoolsolutions.biz>
To: Stephan Gerhold <stephan.gerhold@...aro.org>,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
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,
 Anthony Ruhier <aruhier@...lbox.org>, Johan Hovold <johan@...nel.org>
Subject: Re: [PATCH v2] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x: add
 Bluetooth support

Am 23.06.25 um 14:16 schrieb Stephan Gerhold:

> Well, Bjorn has already merged two instances of this description in
> x1e80100-asus-vivobook-s15.dts and x1e80100-hp-omnibook-x14.dts, so it
> doesn't sound fair anymore to block these kind of patches without
> proposing an actually viable alternative solution.
Hell yes.
> From a quick glance at the Yoga Slim 7x mainboard, I think that WiFi/BT
> is indeed a M.2 card there (like CRD/T14s, but unlike QCP). We haven't
> decided on a good way to model that yet. It would be nice to have at
> least my TODO comment that I added in the CRD/T14s commits so that it is
> obvious that there is ideally still some rework to be done in the
> future.

 From my glance onto a photo of the pcb it looked soldered on without an 
m2 slot.

I actually collected some experience with removing this card in the 
Snapdragon Dev Kit (its normal m2 slot there). Replaced it with an Intel 
I226V NIC, which works with the pmu-wcn7850 definition, but not without 
it. So... still a bit confused why that is, but probably its also the 
kind of working around pcie quirks that the pwrseq-qcom_wcn driver is doing.

> Jens, can you add the same TODO comment that exists in the other two
> device trees mentioned above?

I did that in v3. So it should be valid either way :)

with best regards

Jens