linux-kernel - Re: [PATCH v3 1/2] dt-bindings: media: i2c: Add DW9719 and DW9761 VCM

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Message-ID: <3eb4769eac757428d6ff2bd82f16834c46344ac6.camel@apitzsch.eu>
Date: Wed, 21 May 2025 22:47:08 +0200
From: André Apitzsch <git@...tzsch.eu>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Daniel Scally <djrscally@...il.com>, Mauro Carvalho Chehab
	 <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	devicetree@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht, 
	phone-devel@...r.kernel.org, linux-media@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: media: i2c: Add DW9719 and DW9761
 VCM

Hi Sakari,

Am Montag, dem 10.02.2025 um 09:53 +0000 schrieb Sakari Ailus:
> Hi André,
> 
> Thanks for the update.
> 
> On Sun, Feb 09, 2025 at 10:51:57PM +0100, André Apitzsch via B4 Relay
> wrote:
> > From: André Apitzsch <git@...tzsch.eu>
> > 
> > Document Dongwoon DW9719 and DW9761 VCM devicetree bindings.
> > 
> > Signed-off-by: André Apitzsch <git@...tzsch.eu>
> > ---
> >  .../bindings/media/i2c/dongwoon,dw9719.yaml        | 45
> > ++++++++++++++++++++++
> >  1 file changed, 45 insertions(+)
> > 
> > diff --git
> > a/Documentation/devicetree/bindings/media/i2c/dongwoon,dw9719.yaml
> > b/Documentation/devicetree/bindings/media/i2c/dongwoon,dw9719.yaml
> > new file mode 100644
> > index
> > 0000000000000000000000000000000000000000..b38d22bf09713a7999e1f9ce6
> > 553de7587dbe5d2
> > --- /dev/null
> > +++
> > b/Documentation/devicetree/bindings/media/i2c/dongwoon,dw9719.yaml
> > @@ -0,0 +1,45 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/dongwoon,dw9719.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Dongwoon Anatech DW9719 Voice Coil Motor (VCM) Controller
> > +
> > +maintainers:
> > +  - devicetree@...r.kernel.org
> > +
> > +description:
> > +  The Dongwoon DW9719 is a 10-bit digital-to-analog (DAC)
> > converter. The DAC
> > +  is controlled via a 2-wire (I2C-compatible) serial interface.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - dongwoon,dw9719
> > +      - dongwoon,dw9761
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  vdd-supply:
> > +    description: Regulator providing power to the "VDD" pin.
> 
> The driver uses dongwoon,sac-mode and dongwoon,vcm-freq properties.
> Could you document them as well, please, including the defaults? Are
> the values the same for both chips?
> 
It is difficult to say, because I couldn't find the datasheet for any
of the chips. Maybe someone could provide them.

Best regards,
André

> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        camera-lens@c {
> > +            compatible = "dongwoon,dw9761";
> > +            reg = <0x0c>;
> > +            vdd-supply = <&pm8916_l10>;
> > +        };
> > +    };
> >