Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt b/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
new file mode 100644
index 000000000..7c6304426
--- /dev/null
+++ b/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
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+Trusted Computing Group MMIO Trusted Platform Module
+
+The TCG defines multi vendor standard for accessing a TPM chip, this
+is the standard protocol defined to access the TPM via MMIO. Typically
+this interface will be implemented over Intel's LPC bus.
+
+Refer to the 'TCG PC Client Specific TPM Interface Specification (TIS)' TCG
+publication for the specification.
+
+Required properties:
+
+- compatible: should contain a string below for the chip, followed by
+              "tcg,tpm-tis-mmio". Valid chip strings are:
+	          * "atmel,at97sc3204"
+- reg: The location of the MMIO registers, should be at least 0x5000 bytes
+- interrupts: An optional interrupt indicating command completion.
+
+Example:
+
+	tpm_tis@90000 {
+				compatible = "atmel,at97sc3204", "tcg,tpm-tis-mmio";
+				reg = <0x90000 0x5000>;
+				interrupt-parent = <&EIC0>;
+				interrupts = <1 2>;
+	};