[PATCH v1 4/5] dt-bindings: tpm: Add the TPM TIS I2C device tree binding documentaion
From: <hidden>
Date: 2019-11-10 16:33:26
Also in:
linux-integrity, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Amir Mizinski <redacted> this file aim at documenting TPM TIS I2C related dt-bindings for the I2C PTP based Physical TPM. Signed-off-by: Amir Mizinski <redacted> --- .../bindings/security/tpm/tpm_tis_i2c.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm_tis_i2c.txt
diff --git a/Documentation/devicetree/bindings/security/tpm/tpm_tis_i2c.txt b/Documentation/devicetree/bindings/security/tpm/tpm_tis_i2c.txt
new file mode 100644
index 0000000..7d5a69e
--- /dev/null
+++ b/Documentation/devicetree/bindings/security/tpm/tpm_tis_i2c.txt@@ -0,0 +1,24 @@ +* Device Tree Bindings for I2C PTP based Trusted Platform Module(TPM) + +The TCG defines hardware protocol, registers and interface (based +on the TPM Interface Specification) for accessing TPM devices +implemented with an I2C interface. + +Refer to the 'I2C Interface Definition' section in 'TCG PC Client +PlatformTPMProfile(PTP) Specification' publication for specification. + +Required properties: + +- compatible : Should be "tcg,tpm_tis-i2c" +- reg : Address on the bus +- tpm-pirq : Input gpio pin, used for host interrupts + +Example (for Raspberry Pie 3 Board with Nuvoton's NPCT75X (2.0) +------------------------------------------------------------------- + +tpm_tis-i2c: tpm_tis-i2c@2e { + + compatible = "tcg,tpm_tis-i2c"; + reg = <0x2e>; + tpm-pirq = <&gpio 24 GPIO_ACTIVE_HIGH>; +};
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2.7.4