dt-bindings: tpm: Convert IBM vTPM bindings to DT schema
Convert the devicetree bindings for the IBM Virtual Trusted Platform
Module to DT schema. Drop properties which are already documented in
tpm-common.yaml.
Document the "IBM,vtpm20" compatible string introduced by commit
18b3670d79ae ("tpm: ibmvtpm: Add support for TPM2").
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/5c41e045dfe7cc3f27dd41c08c62ed8c4a90d8a4.1702806810.git.lukas@wunner.de
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Lukas Wunner
Rob Herring
parent
d3b8b0855a
commit
cd6366c0c9
@ -1,41 +0,0 @@
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* Device Tree Bindings for IBM Virtual Trusted Platform Module(vtpm)
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Required properties:
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- compatible : property name that conveys the platform architecture
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identifiers, as 'IBM,vtpm'
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- device_type : specifies type of virtual device
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- interrupts : property specifying the interrupt source number and
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sense code associated with this virtual I/O Adapters
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- ibm,my-drc-index : integer index for the connector between the device
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and its parent - present only if Dynamic
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Reconfiguration(DR) Connector is enabled
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- ibm,#dma-address-cells: specifies the number of cells that are used to
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encode the physical address field of dma-window
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properties
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- ibm,#dma-size-cells : specifies the number of cells that are used to
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encode the size field of dma-window properties
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- ibm,my-dma-window : specifies DMA window associated with this virtual
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IOA
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- ibm,loc-code : specifies the unique and persistent location code
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associated with this virtual I/O Adapters
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- linux,sml-base : 64-bit base address of the reserved memory allocated
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for the firmware event log
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- linux,sml-size : size of the memory allocated for the firmware event log
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Example (IBM Virtual Trusted Platform Module)
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---------------------------------------------
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vtpm@30000003 {
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ibm,#dma-size-cells = <0x2>;
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compatible = "IBM,vtpm";
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device_type = "IBM,vtpm";
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ibm,my-drc-index = <0x30000003>;
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ibm,#dma-address-cells = <0x2>;
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linux,sml-base = <0xc60e 0x0>;
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interrupts = <0xa0003 0x0>;
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ibm,my-dma-window = <0x10000003 0x0 0x0 0x0 0x10000000>;
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ibm,loc-code = "U8286.41A.10082DV-V3-C3";
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reg = <0x30000003>;
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linux,sml-size = <0xbce10200>;
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};
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104
Documentation/devicetree/bindings/tpm/ibm,vtpm.yaml
Normal file
104
Documentation/devicetree/bindings/tpm/ibm,vtpm.yaml
Normal file
@ -0,0 +1,104 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/tpm/ibm,vtpm.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: IBM Virtual Trusted Platform Module (vTPM)
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maintainers:
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- Nayna Jain <nayna@linux.ibm.com>
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description: |
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Virtual TPM is used on IBM POWER7+ and POWER8 systems running POWERVM.
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It is supported through the adjunct partition with firmware release 740
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or higher. With vTPM support, each lpar is able to have its own vTPM
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without the physical TPM hardware. The TPM functionality is provided by
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communicating with the vTPM adjunct partition through Hypervisor calls
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(Hcalls) and Command/Response Queue (CRQ) commands.
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properties:
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compatible:
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enum:
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- IBM,vtpm
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- IBM,vtpm20
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device_type:
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description:
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type of virtual device
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enum:
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- IBM,vtpm
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- IBM,vtpm20
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reg:
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maxItems: 1
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'ibm,#dma-address-cells':
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description:
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number of cells that are used to encode the physical address field of
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dma-window properties
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$ref: /schemas/types.yaml#/definitions/uint32-array
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'ibm,#dma-size-cells':
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description:
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number of cells that are used to encode the size field of
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dma-window properties
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$ref: /schemas/types.yaml#/definitions/uint32-array
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ibm,my-dma-window:
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description:
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DMA window associated with this virtual I/O Adapter
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 5
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maxItems: 5
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ibm,my-drc-index:
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description:
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integer index for the connector between the device and its parent;
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present only if Dynamic Reconfiguration (DR) Connector is enabled
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$ref: /schemas/types.yaml#/definitions/uint32
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ibm,loc-code:
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description:
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unique and persistent location code associated with this virtual
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I/O Adapter
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$ref: /schemas/types.yaml#/definitions/string
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required:
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- compatible
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- device_type
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- reg
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- interrupts
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- ibm,#dma-address-cells
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- ibm,#dma-size-cells
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- ibm,my-dma-window
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- ibm,my-drc-index
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- ibm,loc-code
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- linux,sml-base
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- linux,sml-size
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allOf:
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- $ref: tpm-common.yaml#
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unevaluatedProperties: false
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examples:
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- |
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soc {
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#address-cells = <1>;
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#size-cells = <0>;
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tpm@30000003 {
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compatible = "IBM,vtpm";
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device_type = "IBM,vtpm";
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reg = <0x30000003>;
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interrupts = <0xa0003 0x0>;
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ibm,#dma-address-cells = <0x2>;
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ibm,#dma-size-cells = <0x2>;
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ibm,my-dma-window = <0x10000003 0x0 0x0 0x0 0x10000000>;
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ibm,my-drc-index = <0x30000003>;
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ibm,loc-code = "U8286.41A.10082DV-V3-C3";
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linux,sml-base = <0xc60e 0x0>;
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linux,sml-size = <0xbce10200>;
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};
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};
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