From 82003e0487fb62ac8e58a2bc2583cbaaa1e50652 Mon Sep 17 00:00:00 2001 From: Nayna Jain Date: Wed, 26 Oct 2016 05:21:44 -0400 Subject: Documentation: tpm: add the IBM Virtual TPM device tree binding documentation 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 Signed-off-by: Nayna Jain Acked-by: Rob Herring Signed-off-by: Jarkko Sakkinen --- .../devicetree/bindings/security/tpm/ibmvtpm.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/ibmvtpm.txt diff --git a/Documentation/devicetree/bindings/security/tpm/ibmvtpm.txt b/Documentation/devicetree/bindings/security/tpm/ibmvtpm.txt new file mode 100644 index 000000000000..d89f99971368 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/ibmvtpm.txt @@ -0,0 +1,41 @@ +* 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>; + }; -- cgit v1.2.3