linux-kernel - Re: [PATCH RFC 3/3] arm64: dts: qcom: qcm6490-fairphone-fp5: Add cam actuator

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Message-ID: <aPoTSKCTfFmA9QFJ@kekkonen.localdomain>
Date: Thu, 23 Oct 2025 14:36:40 +0300
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Griffin Kroah-Hartman <griffin.kroah@...rphone.com>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.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>,
	Tianshu Qiu <tian.shu.qiu@...el.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Luca Weiss <luca.weiss@...rphone.com>,
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH RFC 3/3] arm64: dts: qcom: qcm6490-fairphone-fp5: Add cam
 actuator

Hi Griffin,

On Thu, Oct 23, 2025 at 10:37:50AM +0200, Griffin Kroah-Hartman wrote:
> Hi Konrad
> On 10/22/25 19:29, Konrad Dybcio wrote:
> > On 10/9/25 2:23 PM, Griffin Kroah-Hartman wrote:
> > > Add a node for Asahi Kasei AK7377 actuator, used for focus of the main
> > > back camera sensor.
> > > 
> > > Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@...rphone.com>
> > > ---
> > >   arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 7 +++++++
> > >   1 file changed, 7 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
> > > index e115b6a52b299ef663ccfb614785f8f89091f39d..49654f0f914fbe18080d2f55bb6877c8ab7baf0e 100644
> > > --- a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
> > > +++ b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
> > > @@ -616,6 +616,13 @@ &cci0 {
> > >   };
> > >   &cci0_i2c0 {
> > > +	camera_imx800_ak7377: actuator@c {
> > > +		compatible = "asahi-kasei,ak7377";
> > > +		reg = <0x0c>;
> > > +		vdd-supply = <&vreg_l7p>;
> > > +		vio-supply = <&vreg_l7p>;
> > 
> > The dt-bindings suggest vdd is 2.8 V and vio is 1.8 V (at least
> > on AK7375, although this isn't stated explicitly..)
> 
> This AK7377 is integrated into a JHS-M15342-A2, which only takes in VDD as a
> power supply. VIO was only added to satisfy the dt-bindings, as we are not
> sure what the exact pin layout the AK7377 has.
> 
> > L7P on FP5 is 2.7 V (default) - 3.0 V (which you should probably
> > tighten to the actual operating value), please double-check this
> 
> I can confirm that L7P is supposed to be 2.8V on the FP5, I will update the
> dts in my next patchset.

This seems to be unrelated to the DTB/driver patches, which I presume I
could take from this version while you'd post an updated DTS only?

-- 
Regards,

Sakari Ailus