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82003e0487
Virtual TPM, which is being used on IBM POWER7+ and POWER8 systems running POWERVM, is currently supported by tpm device driver but lacks the documentation. This patch adds the missing documentation for the existing support. Suggested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
41 lines
2.2 KiB
Text
41 lines
2.2 KiB
Text
* 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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