# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/tpm/tpm-common.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Trusted Platform Module common properties
maintainers:
- Lukas Wunner <lukas@wunner.de>
properties:
$nodename:
pattern: '^tpm(@[0-9a-f]+)?$'
interrupts:
description: indicates command completion
maxItems: 1
label:
description: human readable string describing the device, e.g. "tpm"
linux,sml-base:
description:
base address of reserved memory allocated for firmware event log
$ref: /schemas/types.yaml#/definitions/uint64
linux,sml-size:
description:
size of reserved memory allocated for firmware event log
$ref: /schemas/types.yaml#/definitions/uint32
memory-region:
description: reserved memory allocated for firmware event log
maxItems: 1
powered-while-suspended:
description:
present when the TPM is left powered on between suspend and resume
(makes the suspend/resume callbacks do nothing)
type: boolean
resets:
description: Reset controller to reset the TPM
maxItems: 1
reset-gpios:
description: Output GPIO pin to reset the TPM
maxItems: 1
# must always have both linux,sml-base and linux,sml-size
dependentRequired:
linux,sml-base: ['linux,sml-size']
linux,sml-size: ['linux,sml-base']
# must only have either memory-region or linux,sml-base
# as well as either resets or reset-gpios
dependentSchemas:
memory-region:
properties:
linux,sml-base: false
linux,sml-base:
properties:
memory-region: false
resets:
properties:
reset-gpios: false
reset-gpios:
properties:
resets: false
allOf:
- if:
properties:
compatible:
contains:
pattern: '^st,st33zp24'
then:
properties:
lpcpd-gpios:
description:
Output GPIO pin used for ST33ZP24 power management of D1/D2 state.
If set, power must be present when the platform is going into
sleep/hibernate mode.
maxItems: 1
additionalProperties: true
