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420d439849
This provides an open firwmare driver binding for tpm_tis. OF is useful on arches where ACPI/PNP is not used. The tcg,tpm-tis-mmio register map interface is specified by the TCG. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
26 lines
878 B
Plaintext
26 lines
878 B
Plaintext
Trusted Computing Group MMIO Trusted Platform Module
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The TCG defines multi vendor standard for accessing a TPM chip, this
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is the standard protocol defined to access the TPM via MMIO. Typically
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this interface will be implemented over Intel's LPC bus.
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Refer to the 'TCG PC Client Specific TPM Interface Specification (TIS)' TCG
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publication for the specification.
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Required properties:
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- compatible: should contain a string below for the chip, followed by
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"tcg,tpm-tis-mmio". Valid chip strings are:
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* "atmel,at97sc3204"
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- reg: The location of the MMIO registers, should be at least 0x5000 bytes
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- interrupt-parent/interrupts: An optional interrupt indicating command completion.
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Example:
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tpm_tis@90000 {
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compatible = "atmel,at97sc3204", "tcg,tpm-tis-mmio";
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reg = <0x90000 0x5000>;
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interrupt-parent = <&EIC0>;
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interrupts = <1 2>;
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};
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