| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/opp/operating-points-v2-ti-cpu.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: TI CPU OPP (Operating Performance Points) |
| 8 | |
| 9 | description: |
| 10 | TI SoCs, like those in the AM335x, AM437x, AM57xx, AM62x, and DRA7xx |
| 11 | families, the CPU frequencies subset and the voltage value of each |
| 12 | OPP vary based on the silicon variant used. The data sheet sections |
| 13 | corresponding to "Operating Performance Points" describe the frequency |
| 14 | and voltage values based on device type and speed bin information |
| 15 | blown in corresponding eFuse bits as referred to by the Technical |
| 16 | Reference Manual. |
| 17 | |
| 18 | This document extends the operating-points-v2 binding by providing |
| 19 | the hardware description for the scheme mentioned above. |
| 20 | |
| 21 | maintainers: |
| 22 | - Nishanth Menon <nm@ti.com> |
| 23 | |
| 24 | allOf: |
| 25 | - $ref: opp-v2-base.yaml# |
| 26 | |
| 27 | properties: |
| 28 | compatible: |
| 29 | const: operating-points-v2-ti-cpu |
| 30 | |
| 31 | syscon: |
| 32 | $ref: /schemas/types.yaml#/definitions/phandle |
| 33 | description: | |
| 34 | points to syscon node representing the control module |
| 35 | register space of the SoC. |
| 36 | |
| 37 | opp-shared: true |
| 38 | |
| 39 | patternProperties: |
| 40 | '^opp(-?[0-9]+)*$': |
| 41 | type: object |
| 42 | additionalProperties: false |
| 43 | |
| 44 | properties: |
| 45 | clock-latency-ns: true |
| 46 | opp-hz: true |
| 47 | opp-microvolt: true |
| 48 | opp-supported-hw: true |
| 49 | opp-suspend: true |
| 50 | turbo-mode: true |
| 51 | |
| 52 | required: |
| 53 | - opp-hz |
| 54 | - opp-supported-hw |
| 55 | |
| 56 | required: |
| 57 | - compatible |
| 58 | - syscon |
| 59 | |
| 60 | additionalProperties: false |
| 61 | |
| 62 | examples: |
| 63 | - | |
| 64 | opp-table { |
| 65 | compatible = "operating-points-v2-ti-cpu"; |
| 66 | syscon = <&scm_conf>; |
| 67 | |
| 68 | opp-300000000 { |
| 69 | opp-hz = /bits/ 64 <300000000>; |
| 70 | opp-microvolt = <1100000 1078000 1122000>; |
| 71 | opp-supported-hw = <0x06 0x0020>; |
| 72 | opp-suspend; |
| 73 | }; |
| 74 | |
| 75 | opp-500000000 { |
| 76 | opp-hz = /bits/ 64 <500000000>; |
| 77 | opp-microvolt = <1100000 1078000 1122000>; |
| 78 | opp-supported-hw = <0x01 0xFFFF>; |
| 79 | }; |
| 80 | |
| 81 | opp-600000000 { |
| 82 | opp-hz = /bits/ 64 <600000000>; |
| 83 | opp-microvolt = <1100000 1078000 1122000>; |
| 84 | opp-supported-hw = <0x06 0x0040>; |
| 85 | }; |
| 86 | |
| 87 | opp-1000000000 { |
| 88 | opp-hz = /bits/ 64 <1000000000>; |
| 89 | opp-microvolt = <1325000 1298500 1351500>; |
| 90 | opp-supported-hw = <0x04 0x0200>; |
| 91 | }; |
| 92 | }; |