dt-bindings: arm: Add Calxeda system registers json-schema binding

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/arm/calxeda/hb-sregs.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Calxeda Highbank system registers

description: |

  The Calxeda Highbank system has a block of MMIO registers controlling

  several generic system aspects. Those can be used to control some power

  management, they also contain some gate and PLL clocks.

maintainers:

  - Andre Przywara <andre.przywara@arm.com>

properties:

  compatible:

    const: calxeda,hb-sregs

  reg:

    maxItems: 1

  clocks:

    type: object

required:

  - compatible

  - reg

additionalProperties: false

examples:

  - |

    sregs@fff3c000 {

        compatible = "calxeda,hb-sregs";

        reg = <0xfff3c000 0x1000>;

        clocks {

            #address-cells = <1>;

            #size-cells = <0>;

            osc: oscillator {

                #clock-cells = <0>;

                compatible = "fixed-clock";

                clock-frequency = <33333000>;

            };

        };

    };