xref: /freebsd/sys/contrib/device-tree/Bindings/crypto/img,hash-accelerator.yaml (revision ae5de77ed78ae54d86cead5604869212e8008e6b)

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

title: Imagination Technologies hardware hash accelerator

maintainers:
  - James Hartley <james.hartley@imgtec.com>

description:
  The hash accelerator provides hardware hashing acceleration for
  SHA1, SHA224, SHA256 and MD5 hashes.

properties:
  compatible:
    const: img,hash-accelerator

  reg:
    items:
      - description: Register base address and size
      - description: DMA port specifier

  interrupts:
    maxItems: 1

  dmas:
    maxItems: 1

  dma-names:
    items:
      - const: tx

  clocks:
    items:
      - description: System clock for hash block registers
      - description: Hash clock for data path

  clock-names:
    items:
      - const: sys
      - const: hash

additionalProperties: false

required:
  - compatible
  - reg
  - interrupts
  - dmas
  - dma-names
  - clocks
  - clock-names

examples:
  - |
    #include <dt-bindings/interrupt-controller/mips-gic.h>
    #include <dt-bindings/clock/pistachio-clk.h>

    hash@18149600 {
        compatible = "img,hash-accelerator";
        reg = <0x18149600 0x100>, <0x18101100 0x4>;
        interrupts = <GIC_SHARED 59 IRQ_TYPE_LEVEL_HIGH>;
        dmas = <&dma 8 0xffffffff 0>;
        dma-names = "tx";
        clocks = <&cr_periph SYS_CLK_HASH>, <&clk_periph PERIPH_CLK_ROM>;
        clock-names = "sys", "hash";
    };