dt-bindings: clock: document the fsl-flexspi-clk device

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/fsl,flexspi-clock.yaml#

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

title: Freescale FlexSPI clock driver for Layerscape SoCs

maintainers:

  - Michael Walle <michael@walle.cc>

description:

  The Freescale Layerscape SoCs have a special FlexSPI clock which is

  derived from the platform PLL.

properties:

  compatible:

    enum:

      - fsl,ls1028a-flexspi-clk

      - fsl,lx2160a-flexspi-clk

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  '#clock-cells':

    const: 0

  clock-output-names:

    maxItems: 1

required:

  - compatible

  - reg

  - clocks

  - '#clock-cells'

additionalProperties: false

examples:

  - |

    dcfg {

        #address-cells = <1>;

        #size-cells = <1>;

        fspi_clk: clock-controller@900 {

            compatible = "fsl,ls1028a-flexspi-clk";

            reg = <0x900 0x4>;

            #clock-cells = <0>;

            clocks = <&parentclk>;

            clock-output-names = "fspi_clk";

        };

    };