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
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