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| author | Amir Mizinski <amirmizi6@gmail.com> | 2021-11-04 17:02:11 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2022-01-14 06:48:50 +0300 |
| commit | 89850bbd514db047f6664251341427cdee4fd9e7 (patch) | |
| tree | 14e56307600c8fb6642e5e8422de1f93c71dfe6f /Documentation | |
| parent | 1caa2f764dc9d49d5a85eef9585fc6d2717c28bb (diff) | |
| download | linux-89850bbd514db047f6664251341427cdee4fd9e7.tar.xz | |
tpm: Add YAML schema for TPM TIS I2C options
Add a YAML schema to support tpm tis i2c related dt-bindings for the I2c
PTP based physical layer.
This patch adds the documentation for corresponding device tree bindings of
I2C based Physical TPM.
Refer to the 'I2C Interface Definition' section in
'TCG PC Client PlatformTPMProfile(PTP) Specification' publication
for specification.
OpenBMC-Staging-Count: 1
Signed-off-by: Amir Mizinski <amirmizi6@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211104140211.6258-6-amirmizi6@gmail.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml new file mode 100644 index 000000000000..217ba8e366c2 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/security/tpm/tpm-tis-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: I2C PTP based TPM Device Tree Bindings + +maintainers: + - Amir Mizinski <amirmizi6@gmail.com> + +description: + Device Tree Bindings for I2C based Trusted Platform Module(TPM). + +properties: + compatible: + items: + - enum: + # Nuvoton's Trusted Platform Module (TPM) (NPCT75x) + - nuvoton,npct75x + - const: tcg,tpm-tis-i2c + + reg: + maxItems: 1 + + interrupt: + maxItems: 1 + + crc-checksum: + $ref: /schemas/types.yaml#/definitions/flag + description: + Set this flag to enable CRC checksum. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + tpm@2e { + compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c"; + reg = <0x2e>; + crc-checksum; + }; + }; +... |