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Message-ID: <20241214142511.2dcdb5be@jic23-huawei>
Date: Sat, 14 Dec 2024 14:25:11 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: David Lechner <dlechner@...libre.com>
Cc: Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Nuno Sá <nuno.sa@...log.com>, Uwe
 Kleine-König <ukleinek@...nel.org>, Michael Hennerich
 <Michael.Hennerich@...log.com>, Lars-Peter Clausen <lars@...afoo.de>, David
 Jander <david@...tonic.nl>, Martin Sperl <kernel@...tin.sperl.org>,
 linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
 linux-pwm@...r.kernel.org
Subject: Re: [PATCH v6 03/17] dt-bindings: trigger-source: add generic PWM
 trigger source

On Wed, 11 Dec 2024 14:54:40 -0600
David Lechner <dlechner@...libre.com> 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@...libre.com>
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@...wei.com>

> ---
> 
> 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@...libre.com>
> +
> +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@...libre.com>
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml
> +
>  TRUSTED SECURITY MODULE (TSM) ATTESTATION REPORTS
>  M:	Dan Williams <dan.j.williams@...el.com>
>  L:	linux-coco@...ts.linux.dev
> 


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