Add support for Asahi Kasei AK7377 driver

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

Posted by Griffin Kroah-Hartman 4 months ago

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@fairphone.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>;
+	};
+
 	/* IMX800 @ 1a */
 
 	eeprom@50 {

-- 
2.43.0

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

Posted by Konrad Dybcio 3 months, 2 weeks ago

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@fairphone.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..)

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

Konrad

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

Posted by Griffin Kroah-Hartman 3 months, 2 weeks ago

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@fairphone.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.

> Konrad

Griffin

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

Posted by Sakari Ailus 3 months, 2 weeks ago

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@fairphone.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