Re: [PATCH v3 2/3] dt-bindings: pwm: Document clk based PWM controller
From: Krzysztof Kozlowski
Date: Fri Jan 21 2022 - 02:34:53 EST
On Thu, 20 Jan 2022 at 17:15, Nikita Travkin <nikita@xxxxxxx> wrote:
>
> Add YAML devicetree binding for clk based PWM controller
>
> Signed-off-by: Nikita Travkin <nikita@xxxxxxx>
> --
> Changes in v2:
> - fix the file name.
> ---
> .../devicetree/bindings/pwm/clk-pwm.yaml | 45 +++++++++++++++++++
> 1 file changed, 45 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pwm/clk-pwm.yaml
>
> diff --git a/Documentation/devicetree/bindings/pwm/clk-pwm.yaml b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml
> new file mode 100644
> index 000000000000..4fb2c1baaad4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/clk-pwm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Clock based PWM controller
> +
> +maintainers:
> + - Nikita Travkin <nikita@xxxxxxx>
> +
> +description: |
> + Some systems have clocks that can be exposed to external devices.
> + (e.g. by muxing them to GPIO pins)
> + It's often possible to control duty-cycle of such clocks which makes them
> + suitable for generating PWM signal.
> +
> +allOf:
> + - $ref: pwm.yaml#
> +
> +properties:
> + compatible:
> + const: clk-pwm
> +
> + clocks:
> + description: Clock used to generate the signal.
> + maxItems: 1
> +
> + "#pwm-cells":
> + const: 2
> +
> +unevaluatedProperties: false
> +
> +required:
> + - clocks
> +
> +examples:
> + - |
> + pwm-flash {
Node names should be generic (see devicetree specification), so just "pwm".
Best regards,
Krzysztof