Re: [PATCH v6 03/17] dt-bindings: trigger-source: add generic PWM trigger source

From: Jonathan Cameron
Date: Sat Dec 14 2024 - 09:25:35 EST


On Wed, 11 Dec 2024 14:54:40 -0600
David Lechner <dlechner@xxxxxxxxxxxx> wrote:

> Add a new binding for using a PWM signal as a trigger source.
>
> The idea here is similar to e.g. "pwm-clock" to allow a trigger source
> consumer to use a PWM provider as a trigger source.
>
> Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx>
LGTM. But obviously this is really one for the dt-binding maintainers to look
at. With that in mind.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

> ---
>
> v6 changes:
> * Moved file from bindings/spi/ to bindings/trigger-source/
> * Updated description to not mention SPI
> * Dropped $ref: /schemas/spi/trigger-source.yaml#
> * Swapped order in name to be consistent with "pwm-clock"
>
> v5 changes:
> * Add MAINTAINERS entry
>
> v4 changes: new patch in v4
> ---
> .../bindings/trigger-source/pwm-trigger.yaml | 37 ++++++++++++++++++++++
> MAINTAINERS | 5 +++
> 2 files changed, 42 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml b/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..1eac20031dc3cf921aafb8aa37f4e4eca1075835
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml
> @@ -0,0 +1,37 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/trigger-source/pwm-trigger.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Generic trigger source using PWM
> +
> +description: Remaps a PWM channel as a trigger source.
> +
> +maintainers:
> + - David Lechner <dlechner@xxxxxxxxxxxx>
> +
> +properties:
> + compatible:
> + const: pwm-trigger
> +
> + '#trigger-source-cells':
> + const: 0
> +
> + pwms:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - '#trigger-source-cells'
> + - pwms
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + trigger {
> + compatible = "pwm-trigger";
> + #trigger-source-cells = <0>;
> + pwms = <&pwm 0 1000000 0>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 9284a257607a740ab7f6fd960c2bcdc34ead7586..b2aa6f37743e48353c60e5973ea8126590c7f6d5 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -23879,6 +23879,11 @@ W: https://github.com/srcres258/linux-doc
> T: git git://github.com/srcres258/linux-doc.git doc-zh-tw
> F: Documentation/translations/zh_TW/
>
> +TRIGGER SOURCE - PWM
> +M: David Lechner <dlechner@xxxxxxxxxxxx>
> +S: Maintained
> +F: Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml
> +
> TRUSTED SECURITY MODULE (TSM) ATTESTATION REPORTS
> M: Dan Williams <dan.j.williams@xxxxxxxxx>
> L: linux-coco@xxxxxxxxxxxxxxx
>