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