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Message-ID: <20240119172838.GA460212-robh@kernel.org>
Date: Fri, 19 Jan 2024 11:28:38 -0600
From: Rob Herring <robh@...nel.org>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Sebastian Reichel <sre@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
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: [RFC PATCH v1 1/7] dt-bindings: power: reset: add generic PSCR
binding trackers
On Fri, Jan 19, 2024 at 02:25:15PM +0100, Oleksij Rempel wrote:
> Add binding for Power State Change Reason (PSCR) subsystem
Why?
How is this different from the reboot reason binding?
>
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
> .../devicetree/bindings/power/reset/pscr.yaml | 51 +++++++++++++++++++
> 1 file changed, 51 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/power/reset/pscr.yaml
>
> diff --git a/Documentation/devicetree/bindings/power/reset/pscr.yaml b/Documentation/devicetree/bindings/power/reset/pscr.yaml
> new file mode 100644
> index 000000000000..1ce973f3473c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/pscr.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/state-change/pscr.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Power State Change Reason (PSCR)
> +
> +maintainers:
> + - Oleksij Rempel <o.rempel@...gutronix.de>
> +
> +description: Binding for devices responsable to store reasons for power state
responsible
> + changes such as reboot and power-off. Reasons like unknown, under voltage,
> + and over temperature are captured for diagnostic or automatic recovery
> + purposes.
> +
> +properties:
> + $nodename:
> + pattern: "^pscr(@.*|-([0-9]|[1-9][0-9]+))?$"
Drop. This could be used in any random device.
> +
> + pscr-unknown:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: Value to indicate an unknown reason for the power state change.
What's an undocumented value? It would be unknown too, so just drop this
property.
> +
> + 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.
> +
> + pscr-over-current:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Value to indicate an over-current condition of a system ctitical regulator
> + as the reason for the power state change.
> +
> + pscr-regulator-failure:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Value to indicate an unknow, system ctitical regulator related failure
> + as the reason for the power state change.
> +
> + pscr-over-temperature:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Value to indicate a system critical over-temperature condition as the
> + reason for the power state change.
> +
> +additionalProperties: true
> +
> +...
> --
> 2.39.2
>
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