52 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/opp/opp-v1.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Generic OPP (Operating Performance Points) v18 9maintainers:10 - Viresh Kumar <viresh.kumar@linaro.org>11 12description: |+13 Devices work at voltage-current-frequency combinations and some implementations14 have the liberty of choosing these. These combinations are called Operating15 Performance Points aka OPPs. This document defines bindings for these OPPs16 applicable across wide range of devices. For illustration purpose, this document17 uses CPU as a device.18 19 This binding only supports voltage-frequency pairs.20 21select: true22 23properties:24 operating-points:25 $ref: /schemas/types.yaml#/definitions/uint32-matrix26 items:27 items:28 - description: Frequency in kHz29 - description: Voltage for OPP in uV30 31 32additionalProperties: true33examples:34 - |35 cpus {36 #address-cells = <1>;37 #size-cells = <0>;38 39 cpu@0 {40 compatible = "arm,cortex-a9";41 device_type = "cpu";42 reg = <0>;43 next-level-cache = <&L2>;44 operating-points =45 /* kHz uV */46 <792000 1100000>,47 <396000 950000>,48 <198000 850000>;49 };50 };51...52