linux-kernel - [RFC PATCH v1 1/7] dt-bindings: power: reset: add generic PSCR binding trackers

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Message-Id: <20240119132521.3609945-2-o.rempel@pengutronix.de>
Date: Fri, 19 Jan 2024 14:25:15 +0100
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: 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: Oleksij Rempel <o.rempel@...gutronix.de>,
	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: [RFC PATCH v1 1/7] dt-bindings: power: reset: add generic PSCR binding trackers

Add binding for Power State Change Reason (PSCR) subsystem

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
+  changes such as reboot and power-off. Reasons like unknown, under voltage,
+  and over temperature are captured for diagnostic or automatic recovery
+  purposes.
+
+properties:
+  $nodename:
+    pattern: "^pscr(@.*|-([0-9]|[1-9][0-9]+))?$"
+
+  pscr-unknown:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Value to indicate an unknown reason for the power state change.
+
+  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