linux-kernel - Re: [PATCH] arm64: dts: qcom: milos-fairphone-fp6: Add Hall Effect sensor

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Message-ID: <66a2cba1-551f-4f6e-b8f2-66524664c495@oss.qualcomm.com>
Date: Tue, 20 Jan 2026 11:18:35 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Luca Weiss <luca.weiss@...rphone.com>,
        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>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: milos-fairphone-fp6: Add Hall Effect
 sensor

On 1/19/26 4:52 PM, Luca Weiss wrote:
> On Mon Jan 19, 2026 at 3:41 PM CET, Konrad Dybcio wrote:
>> On 1/16/26 3:22 PM, Luca Weiss wrote:
>>> Add a node for the Hall Effect sensor, used to detect whether the Flip
>>> Cover is closed or not.
>>>
>>> The sensor is powered through vreg_l10b, so let's put a
>>> regulator-always-on on that to make sure the sensor gets power.
>>
>> Is there anything else on L10B? Can we turn it off if the hall sensor
>> is e.g. user-disabled?
> 
> It's the voltage source for pull-up of sensor I2C bus (so
> ADSP-managed?), DVDD for amplifiers and VDD for a most sensors like
> the gyro.
> 
> So realistically, it'll probably be (nearly) always on anyways. And I
> don't want to shave another yak by adding vdd support to gpio-keys...

That's okay

Let's configure the gpio70 in v2 like Dmitry pointed out

Konrad