From f45aac38c8b754bd4aa74b5ec4fedc0ff39e2cb3 Mon Sep 17 00:00:00 2001 From: Nayna Jain Date: Wed, 26 Oct 2016 05:21:45 -0400 Subject: Documentation: tpm: add the Physical TPM device tree binding documentation Newly added support of TPM 2.0 eventlog securityfs pseudo files in tpm device driver consumes device tree bindings representing I2C based Physical TPM. This patch adds the documentation for corresponding device tree bindings of I2C based Physical TPM. These bindings are similar to vtpm device tree bindings being used on IBM Power7+ and Power8 Systems running PowerVM. Suggested-by: Jason Gunthorpe Signed-off-by: Nayna Jain Acked-by: Rob Herring Signed-off-by: Jarkko Sakkinen --- .../devicetree/bindings/security/tpm/tpm-i2c.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt (limited to 'Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt') diff --git a/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt b/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt new file mode 100644 index 000000000000..8cb638b7e89c --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt @@ -0,0 +1,21 @@ +* Device Tree Bindings for I2C based Trusted Platform Module(TPM) + +Required properties: + +- compatible : 'manufacturer,model', eg. nuvoton,npct650 +- label : human readable string describing the device, eg. "tpm" +- 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 (for OpenPower Systems with Nuvoton TPM 2.0 on I2C) +---------------------------------------------------------- + +tpm@57 { + reg = <0x57>; + label = "tpm"; + compatible = "nuvoton,npct650", "nuvoton,npct601"; + linux,sml-base = <0x7f 0xfd450000>; + linux,sml-size = <0x10000>; + status = "okay"; +}; -- cgit v1.2.3