bindings/tpm/tcg,tpm-tis-mmio.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/tpm/tcg,tpm-tis-mmio.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: MMIO-accessed Trusted Platform Module conforming to TCG TIS specification
   8
   9 maintainers:
  10   - Lukas Wunner <lukas@wunner.de>
  11
  12 description: |
  13   The Trusted Computing Group (TCG) has defined a multi-vendor standard
  14   for accessing a TPM chip.  It can be transported over various buses,
  15   one of them being LPC (via MMIO).  The standard is named:
  16   TCG PC Client Specific TPM Interface Specification (TIS)
  17   https://trustedcomputinggroup.org/resource/pc-client-work-group-pc-client-specific-tpm-interface-specification-tis/
  18
  19 properties:
  20   compatible:
  21     items:
  22       - enum:
  23           - at97sc3201
  24           - atmel,at97sc3204
  25           - socionext,synquacer-tpm-mmio
  26       - const: tcg,tpm-tis-mmio
  27
  28   reg:
  29     description:
  30       location and length of the MMIO registers, length should be
  31       at least 0x5000 bytes
  32
  33 allOf:
  34   - $ref: tpm-common.yaml#
  35
  36 required:
  37   - compatible
  38   - reg
  39
  40 unevaluatedProperties: false
  41
  42 examples:
  43   - |
  44     tpm@90000 {
  45         compatible = "atmel,at97sc3204", "tcg,tpm-tis-mmio";
  46         reg = <0x90000 0x5000>;
  47         interrupt-parent = <&EIC0>;
  48         interrupts = <1 2>;
  49     };