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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/opp/operating-points-v2-ti-cpu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI CPU OPP (Operating Performance Points)
description:
TI SoCs, like those in the AM335x, AM437x, AM57xx, AM62x, and DRA7xx
families, the CPU frequencies subset and the voltage value of each
OPP vary based on the silicon variant used. The data sheet sections
corresponding to "Operating Performance Points" describe the frequency
and voltage values based on device type and speed bin information
blown in corresponding eFuse bits as referred to by the Technical
Reference Manual.
This document extends the operating-points-v2 binding by providing
the hardware description for the scheme mentioned above.
maintainers:
- Nishanth Menon <nm@ti.com>
allOf:
- $ref: opp-v2-base.yaml#
properties:
compatible:
const: operating-points-v2-ti-cpu
syscon:
$ref: /schemas/types.yaml#/definitions/phandle
description: |
points to syscon node representing the control module
register space of the SoC.
opp-shared: true
patternProperties:
'^opp(-?[0-9]+)*$':
type: object
additionalProperties: false
properties:
clock-latency-ns: true
opp-hz: true
opp-microvolt: true
opp-supported-hw: true
opp-suspend: true
turbo-mode: true
required:
- opp-hz
- opp-supported-hw
required:
- compatible
- syscon
additionalProperties: false
examples:
- |
opp-table {
compatible = "operating-points-v2-ti-cpu";
syscon = <&scm_conf>;
opp-300000000 {
opp-hz = /bits/ 64 <300000000>;
opp-microvolt = <1100000 1078000 1122000>;
opp-supported-hw = <0x06 0x0020>;
opp-suspend;
};
opp-500000000 {
opp-hz = /bits/ 64 <500000000>;
opp-microvolt = <1100000 1078000 1122000>;
opp-supported-hw = <0x01 0xFFFF>;
};
opp-600000000 {
opp-hz = /bits/ 64 <600000000>;
opp-microvolt = <1100000 1078000 1122000>;
opp-supported-hw = <0x06 0x0040>;
};
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <1325000 1298500 1351500>;
opp-supported-hw = <0x04 0x0200>;
};
};
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