| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [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/tpm/tpm-common.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Trusted Platform Module common properties |
| 8 | |
| 9 | maintainers: |
| 10 | - Lukas Wunner <lukas@wunner.de> |
| 11 | |
| 12 | properties: |
| 13 | $nodename: |
| 14 | pattern: '^tpm(@[0-9a-f]+)?$' |
| 15 | |
| 16 | interrupts: |
| 17 | description: indicates command completion |
| 18 | maxItems: 1 |
| 19 | |
| 20 | label: |
| 21 | description: human readable string describing the device, e.g. "tpm" |
| 22 | |
| 23 | linux,sml-base: |
| 24 | description: |
| 25 | base address of reserved memory allocated for firmware event log |
| 26 | $ref: /schemas/types.yaml#/definitions/uint64 |
| 27 | |
| 28 | linux,sml-size: |
| 29 | description: |
| 30 | size of reserved memory allocated for firmware event log |
| 31 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 32 | |
| 33 | memory-region: |
| 34 | description: reserved memory allocated for firmware event log |
| 35 | maxItems: 1 |
| 36 | |
| 37 | powered-while-suspended: |
| 38 | description: |
| 39 | present when the TPM is left powered on between suspend and resume |
| 40 | (makes the suspend/resume callbacks do nothing) |
| 41 | type: boolean |
| 42 | |
| 43 | resets: |
| 44 | description: Reset controller to reset the TPM |
| 45 | maxItems: 1 |
| 46 | |
| 47 | reset-gpios: |
| 48 | description: Output GPIO pin to reset the TPM |
| 49 | maxItems: 1 |
| 50 | |
| 51 | # must always have both linux,sml-base and linux,sml-size |
| 52 | dependentRequired: |
| 53 | linux,sml-base: ['linux,sml-size'] |
| 54 | linux,sml-size: ['linux,sml-base'] |
| 55 | |
| 56 | # must only have either memory-region or linux,sml-base |
| 57 | # as well as either resets or reset-gpios |
| 58 | dependentSchemas: |
| 59 | memory-region: |
| 60 | properties: |
| 61 | linux,sml-base: false |
| 62 | linux,sml-base: |
| 63 | properties: |
| 64 | memory-region: false |
| 65 | resets: |
| 66 | properties: |
| 67 | reset-gpios: false |
| 68 | reset-gpios: |
| 69 | properties: |
| 70 | resets: false |
| 71 | |
| 72 | allOf: |
| 73 | - if: |
| 74 | properties: |
| 75 | compatible: |
| 76 | contains: |
| 77 | pattern: '^st,st33zp24' |
| 78 | then: |
| 79 | properties: |
| 80 | lpcpd-gpios: |
| 81 | description: |
| 82 | Output GPIO pin used for ST33ZP24 power management of D1/D2 state. |
| 83 | If set, power must be present when the platform is going into |
| 84 | sleep/hibernate mode. |
| 85 | maxItems: 1 |
| 86 | |
| 87 | additionalProperties: true |