[PATCH v2 4/8] dt-bindings: power: reset: add bindings for NVMEM hardware storing PSCR Data
From: Oleksij Rempel <o.rempel@pengutronix.de>
Date: 2024-01-24 12:22:25
Also in:
linux-pm, lkml
Subsystem:
open firmware and flattened device tree bindings, system reset/shutdown drivers, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Sebastian Reichel, Linus Torvalds
Add device tree bindings that describe hardware implementations of Non-Volatile Memory (NVMEM) used for storing Power State Change Reasons (PSCR). Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- .../bindings/power/reset/pscrr-nvmem.yaml | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/pscrr-nvmem.yaml
diff --git a/Documentation/devicetree/bindings/power/reset/pscrr-nvmem.yaml b/Documentation/devicetree/bindings/power/reset/pscrr-nvmem.yaml
new file mode 100644
index 000000000000..779920dea283
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/pscrr-nvmem.yaml@@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/reset/pscrr-nvmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic NVMEM Power State Change Reason Recorder + +maintainers: + - Oleksij Rempel <o.rempel@pengutronix.de> + +description: This binding describes the Non-Volatile Memory (NVMEM) hardware + that stores Power State Change Reasons (PSCR). + +allOf: + - $ref: pscrr.yaml# + +properties: + compatible: + const: pscrr-nvmem + + nvmem-cells: + description: | + A phandle pointing to the nvmem-cells node where the power state change + reasons are stored. + maxItems: 1 + + nvmem-cell-names: + items: + - const: pscr + + pscr-under-voltage: true + pscr-over-current: true + pscr-regulator-failure: true + pscr-over-temperature: true + +required: + - compatible + - nvmem-cells + - nvmem-cell-names + +additionalProperties: false + +examples: + - | + power-state-change-reason { + compatible = "pscrr-nvmem"; + nvmem-cells = <&pscr_cell>; + nvmem-cell-names = "pscr"; + pscr-under-voltage = <1>; + pscr-over-temperature = <2>; + }; +...
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2.39.2