| 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/power/apple,pmgr-pwrstate.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Apple SoC PMGR Power States |
| 8 | |
| 9 | maintainers: |
| 10 | - Hector Martin <marcan@marcan.st> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: power-domain.yaml# |
| 14 | |
| 15 | description: | |
| 16 | Apple SoCs include PMGR blocks responsible for power management, |
| 17 | which can control various clocks, resets, power states, and |
| 18 | performance features. This binding describes the device power |
| 19 | state registers, which control power states and resets. |
| 20 | |
| 21 | Each instance of a power controller within the PMGR syscon node |
| 22 | represents a generic power domain provider, as documented in |
| 23 | Documentation/devicetree/bindings/power/power-domain.yaml. |
| 24 | The provider controls a single SoC block. The power hierarchy is |
| 25 | represented via power-domains relationships between these nodes. |
| 26 | |
| 27 | See Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml |
| 28 | for the top-level PMGR node documentation. |
| 29 | |
| 30 | properties: |
| 31 | compatible: |
| 32 | items: |
| 33 | - enum: |
| 34 | - apple,t8103-pmgr-pwrstate |
| 35 | - apple,t8112-pmgr-pwrstate |
| 36 | - apple,t6000-pmgr-pwrstate |
| 37 | - const: apple,pmgr-pwrstate |
| 38 | |
| 39 | reg: |
| 40 | maxItems: 1 |
| 41 | |
| 42 | "#power-domain-cells": |
| 43 | const: 0 |
| 44 | |
| 45 | "#reset-cells": |
| 46 | const: 0 |
| 47 | |
| 48 | power-domains: |
| 49 | description: |
| 50 | Reference to parent power domains. A domain may have multiple parents, |
| 51 | and all will be powered up when it is powered. |
| 52 | minItems: 1 |
| 53 | maxItems: 8 # Arbitrary, should be enough |
| 54 | |
| 55 | label: |
| 56 | description: |
| 57 | Specifies the name of the SoC domain being controlled. This is used to |
| 58 | name the power/reset domains. |
| 59 | |
| 60 | apple,always-on: |
| 61 | description: |
| 62 | Forces this power domain to always be powered up. |
| 63 | type: boolean |
| 64 | |
| 65 | apple,min-state: |
| 66 | description: |
| 67 | Specifies the minimum power state for auto-PM. |
| 68 | 0 = power gated, 4 = clock gated, 15 = on. |
| 69 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 70 | minimum: 0 |
| 71 | maximum: 15 |
| 72 | |
| 73 | required: |
| 74 | - compatible |
| 75 | - reg |
| 76 | - "#power-domain-cells" |
| 77 | - "#reset-cells" |
| 78 | - label |
| 79 | |
| 80 | additionalProperties: false |