Documentation: tpm: add the Physical TPM device tree binding documentation (f45aac38) · Commits · 戴 / test

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 <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>

Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt

0 → 100644

+21 −0

Original line number	Diff line number	Diff line
		* 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";
		};

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