linux-kernel - Re: [v2 PATCH] dt-bindings: watchdog: da9062-wdt: convert txt to yaml

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Message-ID: <20231012-flaky-humvee-0a0532621940@spud>
Date:   Thu, 12 Oct 2023 18:18:23 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Nik Bune <n2h9z4@...il.com>
Cc:     wim@...ux-watchdog.org, linux@...ck-us.net, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        skhan@...uxfoundation.org, stwiss.opensource@...semi.com,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [v2 PATCH] dt-bindings: watchdog: da9062-wdt: convert txt to yaml

On Tue, Oct 10, 2023 at 11:14:39PM +0200, Nik Bune wrote:
> Convert txt file to yaml.
> Add a mainterner block. Took a value from dlg,da9063 PMIC.
> 
> Signed-off-by: Nik Bune <n2h9z4@...il.com>
> ---
> 
> Changes in v2:
> - Updated filename to be equal to compatible value.
> - Removed ">" in description fields. 
> - Added optional properties to the example. 
> - Removed reg property, as it is not present in the txt version. 
> 
> 
>  .../bindings/watchdog/da9062-wdt.txt          | 34 -------------
>  .../watchdog/dlg,da9062-watchdog.yaml         | 49 +++++++++++++++++++
>  2 files changed, 49 insertions(+), 34 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
>  create mode 100644 Documentation/devicetree/bindings/watchdog/dlg,da9062-watchdog.yaml
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt b/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
> deleted file mode 100644
> index 354314d854ef..000000000000
> --- a/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
> +++ /dev/null
> @@ -1,34 +0,0 @@
> -* Dialog Semiconductor DA9062/61 Watchdog Timer
> -
> -Required properties:
> -
> -- compatible: should be one of the following valid compatible string lines:
> -	"dlg,da9061-watchdog", "dlg,da9062-watchdog"
> -	"dlg,da9062-watchdog"
> -
> -Optional properties:
> -- dlg,use-sw-pm: Add this property to disable the watchdog during suspend.
> -	Only use this option if you can't use the watchdog automatic suspend
> -	function during a suspend (see register CONTROL_B).
> -- dlg,wdt-sd: Set what happens on watchdog timeout. If this bit is set the
> -	watchdog timeout triggers SHUTDOWN, if cleared the watchdog triggers
> -	POWERDOWN. Can be 0 or 1. Only use this option if you want to change the
> -	default chip's OTP setting for WATCHDOG_SD bit. If this property is NOT
> -	set the WATCHDOG_SD bit and on timeout watchdog behavior will match the
> -	chip's OTP settings.
> -
> -Example: DA9062
> -
> -	pmic0: da9062@58 {
> -		watchdog {
> -			compatible = "dlg,da9062-watchdog";
> -		};
> -	};
> -
> -Example: DA9061 using a fall-back compatible for the DA9062 watchdog driver
> -
> -	pmic0: da9061@58 {
> -		watchdog {
> -			compatible = "dlg,da9061-watchdog", "dlg,da9062-watchdog";
> -		};
> -	};
> diff --git a/Documentation/devicetree/bindings/watchdog/dlg,da9062-watchdog.yaml b/Documentation/devicetree/bindings/watchdog/dlg,da9062-watchdog.yaml
> new file mode 100644
> index 000000000000..9b7ffdb01da0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/dlg,da9062-watchdog.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/dlg,da9062-watchdog.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Dialog Semiconductor DA9062/61 Watchdog Timer
> +
> +maintainers:
> +  - Steve Twiss <stwiss.opensource@...semi.com>
> +
> +allOf:
> +  - $ref: watchdog.yaml#
> +
> +properties:
> +  compatible:
> +    enum: 
> +      - dlg,da9061-watchdog
> +      - dlg,da9062-watchdog
> +
> +  dlg,use-sw-pm:
> +    type: boolean
> +    description:
> +      Add this property to disable the watchdog during suspend.
> +      Only use this option if you can't use the watchdog automatic suspend
> +      function during a suspend (see register CONTROL_B).
> +  
> +  dlg,wdt-sd:
> +    type: boolean

This property is a boolean...

> +    description:
> +      Set what happens on watchdog timeout. If this bit is set the
> +      watchdog timeout triggers SHUTDOWN, if cleared the watchdog triggers
> +      POWERDOWN. Can be 0 or 1.

... but you say "can be 0 or 1". Does this refer to the bit value, or
the property? There are no in-kernel users of this property as far as a
quick grep shows so it is a bi hard to tell.

Otherwise, I'm happy with this.

Thanks,
Conor.

> Only use this option if you want to change the
> +      default chip's OTP setting for WATCHDOG_SD bit. If this property is NOT
> +      set the WATCHDOG_SD bit and on timeout watchdog behavior will match the
> +      chip's OTP settings.
> +
> +required:
> +  - compatible
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    watchdog {
> +      compatible = "dlg,da9062-watchdog";
> +      dlg,use-sw-pm;
> +      dlg,wdt-sd;
> +    };
> -- 
> 2.34.1
> 

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