diff mbox series

[1/3] dt-bindings: iio: potentiometer: Add the Renesas X9250 potentiometers

Message ID 20230420121320.252884-2-herve.codina@bootlin.com
State New
Headers
Series Add the Renesas X9250 potentiometers IIO support |

Commit Message

Herve Codina April 20, 2023, 12:13 p.m. UTC 
  The Renesas X9250 is a quad digitally controlled potentiometers.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../iio/potentiometer/renesas,x9250.yaml      | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml

Comments

Krzysztof Kozlowski April 21, 2023, 7:32 a.m. UTC | #1 
On 20/04/2023 14:13, Herve Codina wrote:
> The Renesas X9250 is a quad digitally controlled potentiometers.
> 

Thank you for your patch. There is something to discuss/improve.

> +maintainers:
> +  - Herve Codina <herve.codina@bootlin.com>
> +
> +description:
> +  The Renesas X9250 integrates four digitally controlled potentiometers.
> +  On each potentiometer, the X9250T has a 100 kOhms total resistance and the
> +  X9250U has a 50 kOhms total resistance.
> +
> +allOf:
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml
> +  - $ref: /schemas/iio/iio.yaml
> +
> +properties:
> +  compatible:
> +    enum:
> +      - renesas,x9250t
> +      - renesas,x9250u
> +
> +  reg:
> +    description:
> +      SPI device address.

SPI bus does not have device addresses, AFAIR. Drop description.

> +    maxItems: 1
> +
> +  '#io-channel-cells':
> +    const: 1
> +
> +  spi-max-frequency:
> +    maximum: 2000000
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#io-channel-cells'
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        x9250@0 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +            compatible = "renesas,x9250t";
> +            reg = <0>;
> +            spi-max-frequency = <2000000>;
> +            #io-channel-cells = <1>;
> +        };
> +    };

Best regards,
Krzysztof
Herve Codina April 21, 2023, 8:01 a.m. UTC | #2 
Hi Krzysztof,

On Fri, 21 Apr 2023 09:32:57 +0200
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote:

> On 20/04/2023 14:13, Herve Codina wrote:
> > The Renesas X9250 is a quad digitally controlled potentiometers.
> >   
> 
> Thank you for your patch. There is something to discuss/improve.
> 
> > +maintainers:
> > +  - Herve Codina <herve.codina@bootlin.com>
> > +
> > +description:
> > +  The Renesas X9250 integrates four digitally controlled potentiometers.
> > +  On each potentiometer, the X9250T has a 100 kOhms total resistance and the
> > +  X9250U has a 50 kOhms total resistance.
> > +
> > +allOf:
> > +  - $ref: /schemas/spi/spi-peripheral-props.yaml
> > +  - $ref: /schemas/iio/iio.yaml
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - renesas,x9250t
> > +      - renesas,x9250u
> > +
> > +  reg:
> > +    description:
> > +      SPI device address.  
> 
> SPI bus does not have device addresses, AFAIR. Drop description.

Indeed, SPI has chip-select.
I will drop the description

> 
> > +    maxItems: 1
> > +
> > +  '#io-channel-cells':
> > +    const: 1
> > +
> > +  spi-max-frequency:
> > +    maximum: 2000000
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - '#io-channel-cells'
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    spi {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +        x9250@0 {  
> 
> Node names should be generic.
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

Will be change to potentiometer@0

> 
> > +            compatible = "renesas,x9250t";
> > +            reg = <0>;
> > +            spi-max-frequency = <2000000>;
> > +            #io-channel-cells = <1>;
> > +        };
> > +    };  
> 
> Best regards,
> Krzysztof
> 

The modifications will be present on v3 as v2 was already sent.

Thanks for the review,
Hervé
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml b/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml
new file mode 100644
index 000000000000..e0433cd522aa
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml
@@ -0,0 +1,56 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/potentiometer/renesas,x9250.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas X9250 quad potentiometers
+
+maintainers:
+  - Herve Codina <herve.codina@bootlin.com>
+
+description:
+  The Renesas X9250 integrates four digitally controlled potentiometers.
+  On each potentiometer, the X9250T has a 100 kOhms total resistance and the
+  X9250U has a 50 kOhms total resistance.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml
+  - $ref: /schemas/iio/iio.yaml
+
+properties:
+  compatible:
+    enum:
+      - renesas,x9250t
+      - renesas,x9250u
+
+  reg:
+    description:
+      SPI device address.
+    maxItems: 1
+
+  '#io-channel-cells':
+    const: 1
+
+  spi-max-frequency:
+    maximum: 2000000
+
+required:
+  - compatible
+  - reg
+  - '#io-channel-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        x9250@0 {
+            compatible = "renesas,x9250t";
+            reg = <0>;
+            spi-max-frequency = <2000000>;
+            #io-channel-cells = <1>;
+        };
+    };