linux-kernel - Re: [PATCH] dt-bindings: pps: pps-gpio: Convert to yaml

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Message-ID: <20230818162432.GA118441-robh@kernel.org>
Date:   Fri, 18 Aug 2023 11:24:32 -0500
From:   Rob Herring <robh@...nel.org>
To:     Fabio Estevam <festevam@...il.com>
Cc:     giometti@...eenne.com, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Fabio Estevam <festevam@...x.de>
Subject: Re: [PATCH] dt-bindings: pps: pps-gpio: Convert to yaml

On Wed, Aug 09, 2023 at 08:08:12AM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <festevam@...x.de>
> 
> Convert from pps-gpio.txt to pps-gpio.yaml to allow schema validation.
> 
> Signed-off-by: Fabio Estevam <festevam@...x.de>
> ---
>  .../devicetree/bindings/pps/pps-gpio.txt      | 30 ------------
>  .../devicetree/bindings/pps/pps-gpio.yaml     | 46 +++++++++++++++++++
>  2 files changed, 46 insertions(+), 30 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/pps/pps-gpio.txt
>  create mode 100644 Documentation/devicetree/bindings/pps/pps-gpio.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pps/pps-gpio.txt b/Documentation/devicetree/bindings/pps/pps-gpio.txt
> deleted file mode 100644
> index 9012a2a02e14..000000000000
> --- a/Documentation/devicetree/bindings/pps/pps-gpio.txt
> +++ /dev/null
> @@ -1,30 +0,0 @@
> -Device-Tree Bindings for a PPS Signal on GPIO
> -
> -These properties describe a PPS (pulse-per-second) signal connected to
> -a GPIO pin.
> -
> -Required properties:
> -- compatible: should be "pps-gpio"
> -- gpios: one PPS GPIO in the format described by ../gpio/gpio.txt
> -
> -Additional required properties for the PPS ECHO functionality:
> -- echo-gpios: one PPS ECHO GPIO in the format described by ../gpio/gpio.txt
> -- echo-active-ms: duration in ms of the active portion of the echo pulse
> -
> -Optional properties:
> -- assert-falling-edge: when present, assert is indicated by a falling edge
> -                       (instead of by a rising edge)
> -
> -Example:
> -	pps {
> -		pinctrl-names = "default";
> -		pinctrl-0 = <&pinctrl_pps>;
> -
> -		gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
> -		assert-falling-edge;
> -
> -		echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
> -		echo-active-ms = <100>;
> -
> -		compatible = "pps-gpio";
> -	};
> diff --git a/Documentation/devicetree/bindings/pps/pps-gpio.yaml b/Documentation/devicetree/bindings/pps/pps-gpio.yaml
> new file mode 100644
> index 000000000000..801fd2720080
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pps/pps-gpio.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pps/pps-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: PPS Signal via GPIO
> +
> +maintainers:
> +  - Fabio Estevam <festevam@...il.com>
> +
> +properties:
> +  compatible:
> +    const: pps-gpio
> +
> +  gpios:
> +    description: The GPIO that provides the PPS signal.

maxItems: 1

> +
> +  echo-gpios:
> +    description: The GPIO that provides the PPS ECHO signal.

maxItems: 1

> +
> +  echo-active-ms:
> +    description: Duration in ms of the active portion of the echo pulse.
> +
> +  assert-falling-edge:
> +    description: Indicates a falling edge assert, when present. Rising edge if absent.

type: boolean

> +
> +required:
> +  - compatible
> +  - gpios
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +      #include <dt-bindings/gpio/gpio.h>
> +
> +      pps {
> +          compatible = "pps-gpio";
> +          pinctrl-names = "default";
> +          pinctrl-0 = <&pinctrl_pps>;
> +          gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
> +          assert-falling-edge;
> +          echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
> +          echo-active-ms = <100>;
> +      };
> -- 
> 2.34.1
>