forked from Minki/linux
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>
42 lines
2.2 KiB
Plaintext
42 lines
2.2 KiB
Plaintext
* Device Tree Bindings for IBM Virtual Trusted Platform Module(vtpm)
|
|
|
|
Required properties:
|
|
|
|
- compatible : property name that conveys the platform architecture
|
|
identifiers, as 'IBM,vtpm'
|
|
- device_type : specifies type of virtual device
|
|
- interrupts : property specifying the interrupt source number and
|
|
sense code associated with this virtual I/O Adapters
|
|
- ibm,my-drc-index : integer index for the connector between the device
|
|
and its parent - present only if Dynamic
|
|
Reconfiguration(DR) Connector is enabled
|
|
- ibm,#dma-address-cells: specifies the number of cells that are used to
|
|
encode the physical address field of dma-window
|
|
properties
|
|
- ibm,#dma-size-cells : specifies the number of cells that are used to
|
|
encode the size field of dma-window properties
|
|
- ibm,my-dma-window : specifies DMA window associated with this virtual
|
|
IOA
|
|
- ibm,loc-code : specifies the unique and persistent location code
|
|
associated with this virtual I/O Adapters
|
|
- linux,sml-base : 64-bit base address of the reserved memory allocated
|
|
for the firmware event log
|
|
- linux,sml-size : size of the memory allocated for the firmware event log
|
|
|
|
Example (IBM Virtual Trusted Platform Module)
|
|
---------------------------------------------
|
|
|
|
vtpm@30000003 {
|
|
ibm,#dma-size-cells = <0x2>;
|
|
compatible = "IBM,vtpm";
|
|
device_type = "IBM,vtpm";
|
|
ibm,my-drc-index = <0x30000003>;
|
|
ibm,#dma-address-cells = <0x2>;
|
|
linux,sml-base = <0xc60e 0x0>;
|
|
interrupts = <0xa0003 0x0>;
|
|
ibm,my-dma-window = <0x10000003 0x0 0x0 0x0 0x10000000>;
|
|
ibm,loc-code = "U8286.41A.10082DV-V3-C3";
|
|
reg = <0x30000003>;
|
|
linux,sml-size = <0xbce10200>;
|
|
};
|