linux-kernel - Re: [PATCH v1 1/1] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x: enable MICs LDO

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Message-ID: <CAMcHhXp5A2v2cuWt2pZ-6qeN+D2qZvV-4XCN8s3OonZqD6e4XQ@mail.gmail.com>
Date: Sat, 12 Apr 2025 14:45:31 +0200
From: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH v1 1/1] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x:
 enable MICs LDO

You are right, this is probably too 'dirty' fix.
I did some more digging, and found the root cause of the problem -
MICs were not configured in audio routings, even though vreg was
already binded to lpass_macro. Will send v2.

Thanks,
Alex


On Fri, 11 Apr 2025 at 21:25, Konrad Dybcio
<konrad.dybcio@....qualcomm.com> wrote:
>
> On 4/11/25 5:54 PM, Aleksandrs Vinarskis wrote:
> > Particular device comes without headset combo jack, hence does not
> > feature wcd codec IC. In such cases, DMICs are powered from vreg_l1b.
> > Set regulator as always-on to enable microphones.
> >
> > Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
> > ---
>
> Can we bind it to the soundcard or something, so that we're not leaking
> power?
>
> Konrad