linux-kernel - Re: [PATCH v2 2/8] dt-bindings: power: reset: add generic PSCRR binding trackers

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Date: Thu, 25 Jan 2024 11:54:46 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Oleksij Rempel <o.rempel@...gutronix.de>,
 Sebastian Reichel <sre@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: kernel@...gutronix.de, linux-kernel@...r.kernel.org,
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>,
 Lukasz Luba <lukasz.luba@....com>, linux-pm@...r.kernel.org,
 devicetree@...r.kernel.org, Søren Andersen <san@...v.dk>
Subject: Re: [PATCH v2 2/8] dt-bindings: power: reset: add generic PSCRR
 binding trackers

On 24/01/2024 13:21, Oleksij Rempel wrote:
> Add binding for Power State Change Reason Recording (PSCRR) subsystem
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  .../bindings/power/reset/pscrr.yaml           | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/reset/pscrr.yaml
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/pscrr.yaml b/Documentation/devicetree/bindings/power/reset/pscrr.yaml
> new file mode 100644
> index 000000000000..c8738b4930fe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/pscrr.yaml
> @@ -0,0 +1,44 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/reset/pscrr.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Power State Change Reason (PSCR)

Missing final R?

> +
> +maintainers:
> +  - Oleksij Rempel <o.rempel@...gutronix.de>
> +
> +description: Binding for devices responsible to store reasons for power state

Line break after description:

> +  changes such as reboot and power-off. Reasons like unknown, under voltage,
> +  and over temperature are captured for diagnostic or automatic recovery
> +  purposes.
> +
> +properties:
> +  pscr-under-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      Value to indicate an under-voltage condition of a system critical
> +      regulator as the reason for the power state change.

I don't understand how it is supposed to work... unless you wrote
binding for drivers. For drivers it would make sense, but that's another
problem: binding is not for drivers.

You also did not present here DTS with any actual device doing this. You
just added a driver...

Best regards,
Krzysztof