xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/mailbox/ti,secure-proxy.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mailbox/ti,secure-proxy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Texas Instruments' Secure Proxy

maintainers:
  - Nishanth Menon <nm@ti.com>

description: |
  The Texas Instruments' secure proxy is a mailbox controller that has
  configurable queues selectable at SoC(System on Chip) integration. The
  Message manager is broken up into different address regions that are
  called "threads" or "proxies" - each instance is unidirectional and is
  instantiated at SoC integration level by system controller to indicate
  receive or transmit path.

properties:
  $nodename:
    pattern: "^mailbox@[0-9a-f]+$"

  compatible:
    const: ti,am654-secure-proxy

  "#mbox-cells":
    const: 1
    description:
      Contains the secure proxy thread ID used for the specific transfer path.

  reg-names:
    items:
      - const: target_data
      - const: rt
      - const: scfg

  reg:
    minItems: 3

  interrupt-names:
    minItems: 1
    maxItems: 100
    items:
      pattern: "^rx_[0-9]{3}$"
    description:
      Contains the interrupt name information for the Rx interrupt path for
      secure proxy thread in the form 'rx_<PID>'.

  interrupts:
    minItems: 1
    maxItems: 100
    description:
      Contains the interrupt information for the Rx interrupt path for secure
      proxy.

required:
  - compatible
  - reg-names
  - reg
  - interrupt-names
  - interrupts
  - "#mbox-cells"

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    secure_proxy: mailbox@32c00000 {
          compatible = "ti,am654-secure-proxy";
          #mbox-cells = <1>;
          reg-names = "target_data", "rt", "scfg";
          reg = <0x32c00000 0x100000>,
                <0x32400000 0x100000>,
                <0x32800000 0x100000>;
          interrupt-names = "rx_011";
          interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
    };