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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/energy-model.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Energy Model Bindings
+
+maintainers:
+ - Lukasz Luba <lukasz.luba@arm.com>
+
+description: |+
+ Devices work at specific performance states (frequencies). The power which
+ is used at a given performance state is an important information. A framework
+ which maintains this information is Energy Model. This document defines
+ bindings for these Energy Model performance states applicable across wide
+ range of devices. For illustration purpose, this document uses GPU as a device.
+
+ This binding only supports frequency-power pairs.
+
+select: true
+
+properties:
+ operating-points:
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ items:
+ items:
+ - description: Frequency in kHz
+ - description: Power in uW
+
+
+additionalProperties: true
+examples:
+ {
+ gpu_energy_model: energy-model {
+ compatible = "energy-model";
+ energy-model-entries = <
+ 200000 300000
+ 297000 500000
+ 400000 800000
+ 500000 1400000
+ 600000 2000000
+ 800000 2800000
+ >;
+ };
+ };
+
+ &gpu {
+ energy-model = <&gpu_energy_model>;
+ };
+...
Add DT bindings for the Energy Model information. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> --- .../bindings/power/energy-model.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/energy-model.yaml