xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/arm/hisilicon/low-pin-count.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/hisilicon/low-pin-count.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Hisilicon HiP06 Low Pin Count device

maintainers:
  - Wei Xu <xuwei5@hisilicon.com>

description: |
  Hisilicon HiP06 SoCs implement a Low Pin Count (LPC) controller, which
  provides I/O access to some legacy ISA devices.
  HiP06 is based on arm64 architecture where there is no I/O space. So, the
  I/O ports here are not CPU addresses, and there is no 'ranges' property in
  LPC device node.

properties:
  $nodename:
    pattern: '^isa@[0-9a-f]+$'
    description: |
      The node name before '@' must be "isa" to represent the binding stick
      to the ISA/EISA binding specification.

  compatible:
    enum:
      - hisilicon,hip06-lpc
      - hisilicon,hip07-lpc

  reg:
    maxItems: 1

  '#address-cells':
    const: 2

  '#size-cells':
    const: 1

required:
  - compatible
  - reg

additionalProperties:
  type: object

examples:
  - |
    isa@a01b0000 {
        compatible = "hisilicon,hip06-lpc";
        #address-cells = <2>;
        #size-cells = <1>;
        reg = <0xa01b0000 0x1000>;

        ipmi0: bt@e4 {
            compatible = "ipmi-bt";
            device_type = "ipmi";
            reg = <0x01 0xe4 0x04>;
        };
    };
...