1Trusted Computing Group MMIO Trusted Platform Module
2
3The TCG defines multi vendor standard for accessing a TPM chip, this
4is the standard protocol defined to access the TPM via MMIO. Typically
5this interface will be implemented over Intel's LPC bus.
6
7Refer to the 'TCG PC Client Specific TPM Interface Specification (TIS)' TCG
8publication for the specification.
9
10Required properties:
11
12- compatible: should contain a string below for the chip, followed by
13              "tcg,tpm-tis-mmio". Valid chip strings are:
14	          * "atmel,at97sc3204"
15- reg: The location of the MMIO registers, should be at least 0x5000 bytes
16- interrupt-parent/interrupts: An optional interrupt indicating command completion.
17
18Example:
19
20	tpm_tis@90000 {
21				compatible = "atmel,at97sc3204", "tcg,tpm-tis-mmio";
22				reg = <0x90000 0x5000>;
23				interrupt-parent = <&EIC0>;
24				interrupts = <1 2>;
25	};
26