On Mon, Apr 04, 2022 at 10:18:35AM +0200, Johannes Holland wrote: > Add a YAML 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. Bindings are for devices. A protocol layer does not make a device. > > Signed-off-by: Johannes Holland <johannes.holland@xxxxxxxxxxxx> > --- > .../bindings/security/tpm/tpm-tis-i2c.yaml | 48 +++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml We already have a binding for I2C TPM. That one should be converted. > > 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..7948867ff3f7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml > @@ -0,0 +1,48 @@ > +# 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: > + - Johannes Holland <johannes.holland@xxxxxxxxxxxx> > + > +description: > + Device Tree Bindings for I2C based Trusted Platform Module (TPM). > + > +properties: > + compatible: > + items: > + - enum: > + # Infineon's Trusted Platform Module (TPM) (SLB9673) > + - infineon,slb9673 > + # Nuvoton's Trusted Platform Module (TPM) (NPCT75x) > + - nuvoton,npct75x I see this is already used, but in general wildcards should not be used in device compatibles. > + - const: tcg,tpm-tis-i2c Pretty sure I killed this off when originally reviewing the TPM I2C binding. > + > + reg: > + maxItems: 1 > + > + interrupt: > + maxItems: 1 > + > +required: > + - compatible > + - reg > + > +additionalProperties: false > + > +examples: > + - | > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + > + tpm@2e { > + compatible = "infineon,slb9673", "nuvoton,npct75x", "tcg,tpm-tis-i2c"; > + reg = <0x2e>; > + }; > + }; > +... > -- > 2.31.1.windows.1 > >
