From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ninad Palsule Date: Tue, 12 Dec 2023 10:39:58 -0600 Subject: [PATCH v1 2/8] dt-bindings: tpm: Add schema for TIS I2C devices In-Reply-To: <20231212164004.1683589-1-ninad@linux.ibm.com> References: <20231212164004.1683589-1-ninad@linux.ibm.com> Message-ID: <20231212164004.1683589-3-ninad@linux.ibm.com> List-Id: To: linux-aspeed@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Johannes Holland Add a dt schema to support device tree bindings for the generic I2C physical layer. Refer to the TCG PC Client Platform TPM Profile (PTP) Specification for TPM 2.0 v1.04 Revision 14. This includes descriptions for the Nuvoton and Infineon devices. OpenBMC-Staging-Count: 3 Signed-off-by: Johannes Holland Signed-off-by: Joel Stanley Signed-off-by: Ninad Palsule --- .../bindings/security/tpm/tpm-tis-i2c.yaml | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml 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..de1e34065748 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml @@ -0,0 +1,50 @@ +# 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 Devices + +maintainers: + - Johannes Holland + +description: + Device Tree Bindings for I2C based Trusted Platform Module (TPM). + +properties: + $nodename: + pattern: "^tpm(@[0-9a-f]+)?$" + + compatible: + oneOf: + - description: Infineon's Trusted Platform Module (TPM) (SLB9673). + items: + - const: infineon,slb9673 + - const: tcg,tpm-tis-i2c + - description: Nuvoton's Trusted Platform Module (TPM) (NPCT75x). + items: + - const: nuvoton,npct75x + - const: tcg,tpm-tis-i2c + - const: tcg,tpm-tis-i2c + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + tpm at 2e { + compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c"; + reg = <0x2e>; + }; + }; +... -- 2.39.2