linux-kernel - Re: [PATCH 1/6] dt-bindings: pwm: add dt-bindings for mule pwm-over-i2c controller

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Date: Wed, 29 May 2024 21:29:10 +0100
From: Conor Dooley <conor@...nel.org>
To: Farouk Bouabid <farouk.bouabid@...rry.de>
Cc: Uwe Kleine-König <ukleinek@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Quentin Schulz <quentin.schulz@...rry.de>,
	Heiko Stuebner <heiko@...ech.de>, linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 1/6] dt-bindings: pwm: add dt-bindings for mule
 pwm-over-i2c controller

On Wed, May 29, 2024 at 12:10:30PM +0200, Farouk Bouabid wrote:
> Mule is a device that controls a PWM output signal based on I2C commands.
> 
> Signed-off-by: Farouk Bouabid <farouk.bouabid@...rry.de>
> ---
>  .../devicetree/bindings/pwm/tsd,pwm-mule.yaml      | 46 ++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/tsd,pwm-mule.yaml b/Documentation/devicetree/bindings/pwm/tsd,pwm-mule.yaml
> new file mode 100644
> index 000000000000..71a940a2a644
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/tsd,pwm-mule.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/tsd,pwm-mule.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mule PWM-over-I2C controller
> +
> +description: |

This | is not needed.

> +  A device that outputs a PWM signal based on I2C commands.
> +
> +maintainers:
> +  - Farouk Bouabid <farouk.bouabid@...rry.de>
> +  - Quentin Schulz <quentin.schulz@...rry.de>
> +
> +allOf:
> +  - $ref: pwm.yaml#
> +
> +properties:
> +  compatible:
> +    const: tsd,pwm-mule
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#pwm-cells":
> +    const: 2

No clocks or supplies?
I tried to google for some documentation for this device, but only found
archives of this mail thread..

Thanks,
Conor.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      pwm@18 {
> +        compatible = "tsd,pwm-mule";
> +        reg = <0x18>;
> +        #pwm-cells = <2>;
> +      };
> +    };
> 
> -- 
> 2.34.1
> 

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