linux-kernel - Re: [PATCH v3 1/2] dt-bindings: iio: adc: Add binding for Nuvoton NCT720x ADCs

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Message-ID: <CA+4VgcK_9_YD0d7LUKbxU6yd3Qo9RT4yNbi90mMN=kK0LHXwow@mail.gmail.com>
Date: Mon, 6 Jan 2025 15:22:53 +0800
From: Yu-Hsian Yang <j2anfernee@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com, 
	venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com, 
	jic23@...nel.org, lars@...afoo.de, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, nuno.sa@...log.com, dlechner@...libre.com, 
	javier.carrasco.cruz@...il.com, andriy.shevchenko@...ux.intel.com, 
	marcelo.schmitt@...log.com, olivier.moysan@...s.st.com, 
	mitrutzceclan@...il.com, tgamblin@...libre.com, matteomartelli3@...il.com, 
	alisadariana@...il.com, gstols@...libre.com, thomas.bonnefille@...tlin.com, 
	herve.codina@...tlin.com, chanh@...amperecomputing.com, KWLIU@...oton.com, 
	yhyang2@...oton.com, openbmc@...ts.ozlabs.org, linux-iio@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: iio: adc: Add binding for Nuvoton
 NCT720x ADCs

Dear Krzysztof,

Thanks for your comments.

Krzysztof Kozlowski <krzk@...nel.org> 於 2024年12月27日 週五 下午4:17寫道：
>
> On Thu, Dec 26, 2024 at 01:53:12PM +0800, Eason Yang wrote:
> > Adds a binding specification for the Nuvoton NCT7201/NCT7202
>
>
> I gave you link to exact line with exact text to use. Read it again and
> use it, instead inventing your own wording. The documentation does not
> say "Adds" but explicitly asks you to say "Add". Why using different?
>
> Subject: nothing improved.
>
> >
> > Signed-off-by: Eason Yang <j2anfernee@...il.com>
> > ---
> >  .../bindings/iio/adc/nuvoton,nct7201.yaml     | 49 +++++++++++++++++++
> >  MAINTAINERS                                   |  1 +
> >  2 files changed, 50 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml b/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml
> > new file mode 100644
> > index 000000000000..08b52258e4af
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml
> > @@ -0,0 +1,49 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/iio/adc/nuvoton,nct7201.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Nuvoton nct7201 and similar ADCs
> > +
> > +maintainers:
> > +  - Eason Yang <j2anfernee@...il.com>
> > +
> > +description: |
> > +   Family of ADCs with i2c interface.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - nuvoton,nct7201
> > +      - nuvoton,nct7202
>
> Devices aren't compatible? Explain in the commit msg why they aren't or
> use proper compatibility (oneOf, see numerous other bindings or example-schema).
>
>

+  compatible:
-    enum:
-      - nuvoton,nct7201
-      - nuvoton,nct7202
+    oneOf:
+      - const: nuvoton,nct7201
+      - const: nuvoton,nct7202

> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  reset-gpios:
> > +    description:
> > +      Reset pin for the device.
>
> Drop description, obvious.
>
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        adc@1d {
> > +            compatible = "nuvoton,nct7202";
> > +            reg = <0x1d>;
>
>
> Make the example complete: add interrupts and reset-gpios.
>

Add interrupts and reset-gpios example,
+ #include <dt-bindings/gpio/gpio.h>

    i2c {
        #address-cells = <1>;
        #size-cells = <0>;
       adc@1d {
            compatible = "nuvoton,nct7202";
            reg = <0x1d>;
+            interrupt-parent = <&gpio3>;
+            interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
+            reset-gpios = <&gpio3 28 GPIO_ACTIVE_LOW>;
        };

> Best regards,
> Krzysztof
>