| 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/ibm,vtpm.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: IBM Virtual Trusted Platform Module (vTPM) |
| 8 | |
| 9 | maintainers: |
| 10 | - Nayna Jain <nayna@linux.ibm.com> |
| 11 | |
| 12 | description: | |
| 13 | Virtual TPM is used on IBM POWER7+ and POWER8 systems running POWERVM. |
| 14 | It is supported through the adjunct partition with firmware release 740 |
| 15 | or higher. With vTPM support, each lpar is able to have its own vTPM |
| 16 | without the physical TPM hardware. The TPM functionality is provided by |
| 17 | communicating with the vTPM adjunct partition through Hypervisor calls |
| 18 | (Hcalls) and Command/Response Queue (CRQ) commands. |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | enum: |
| 23 | - IBM,vtpm |
| 24 | - IBM,vtpm20 |
| 25 | |
| 26 | device_type: |
| 27 | description: |
| 28 | type of virtual device |
| 29 | enum: |
| 30 | - IBM,vtpm |
| 31 | - IBM,vtpm20 |
| 32 | |
| 33 | reg: |
| 34 | maxItems: 1 |
| 35 | |
| 36 | 'ibm,#dma-address-cells': |
| 37 | description: |
| 38 | number of cells that are used to encode the physical address field of |
| 39 | dma-window properties |
| 40 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 41 | |
| 42 | 'ibm,#dma-size-cells': |
| 43 | description: |
| 44 | number of cells that are used to encode the size field of |
| 45 | dma-window properties |
| 46 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 47 | |
| 48 | ibm,my-dma-window: |
| 49 | description: |
| 50 | DMA window associated with this virtual I/O Adapter |
| 51 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 52 | minItems: 5 |
| 53 | maxItems: 5 |
| 54 | |
| 55 | ibm,my-drc-index: |
| 56 | description: |
| 57 | integer index for the connector between the device and its parent; |
| 58 | present only if Dynamic Reconfiguration (DR) Connector is enabled |
| 59 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 60 | |
| 61 | ibm,loc-code: |
| 62 | description: |
| 63 | unique and persistent location code associated with this virtual |
| 64 | I/O Adapter |
| 65 | $ref: /schemas/types.yaml#/definitions/string |
| 66 | |
| 67 | required: |
| 68 | - compatible |
| 69 | - device_type |
| 70 | - reg |
| 71 | - interrupts |
| 72 | - ibm,#dma-address-cells |
| 73 | - ibm,#dma-size-cells |
| 74 | - ibm,my-dma-window |
| 75 | - ibm,my-drc-index |
| 76 | - ibm,loc-code |
| 77 | - linux,sml-base |
| 78 | - linux,sml-size |
| 79 | |
| 80 | allOf: |
| 81 | - $ref: tpm-common.yaml# |
| 82 | |
| 83 | unevaluatedProperties: false |
| 84 | |
| 85 | examples: |
| 86 | - | |
| 87 | soc { |
| 88 | #address-cells = <1>; |
| 89 | #size-cells = <0>; |
| 90 | |
| 91 | tpm@30000003 { |
| 92 | compatible = "IBM,vtpm"; |
| 93 | device_type = "IBM,vtpm"; |
| 94 | reg = <0x30000003>; |
| 95 | interrupts = <0xa0003 0x0>; |
| 96 | ibm,#dma-address-cells = <0x2>; |
| 97 | ibm,#dma-size-cells = <0x2>; |
| 98 | ibm,my-dma-window = <0x10000003 0x0 0x0 0x0 0x10000000>; |
| 99 | ibm,my-drc-index = <0x30000003>; |
| 100 | ibm,loc-code = "U8286.41A.10082DV-V3-C3"; |
| 101 | linux,sml-base = <0xc60e 0x0>; |
| 102 | linux,sml-size = <0xbce10200>; |
| 103 | }; |
| 104 | }; |