dt-bindings: clock: Convert i.MX6Q clock to json-schema

* Clock bindings for Freescale i.MX6 Quad

Required properties:

- compatible: Should be "fsl,imx6q-ccm"

- reg: Address and length of the register set

- interrupts: Should contain CCM interrupt

- #clock-cells: Should be <1>

Optional properties:

- fsl,pmic-stby-poweroff: Configure CCM to assert PMIC_STBY_REQ signal

  on power off.

  Use this property if the SoC should be powered off by external power

  management IC (PMIC) triggered via PMIC_STBY_REQ signal.

  Boards that are designed to initiate poweroff on PMIC_ON_REQ signal should

  be using "syscon-poweroff" driver instead.

- clocks: list of clock specifiers, must contain an entry for each entry

          in clock-names

- clock-names: valid names are "osc", "ckil", "ckih1", "anaclk1" and "anaclk2"

The clock consumer should specify the desired clock by having the clock

ID in its "clocks" phandle cell.  See include/dt-bindings/clock/imx6qdl-clock.h

for the full list of i.MX6 Quad and DualLite clock IDs.

Examples:

#include <dt-bindings/clock/imx6qdl-clock.h>

clks: ccm@20c4000 {

	compatible = "fsl,imx6q-ccm";

	reg = <0x020c4000 0x4000>;

	interrupts = <0 87 0x04 0 88 0x04>;

	#clock-cells = <1>;

};

uart1: serial@2020000 {

	compatible = "fsl,imx6q-uart", "fsl,imx21-uart";

	reg = <0x02020000 0x4000>;

	interrupts = <0 26 0x04>;

	clocks = <&clks IMX6QDL_CLK_UART_IPG>, <&clks IMX6QDL_CLK_UART_SERIAL>;

	clock-names = "ipg", "per";

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/imx6q-clock.yaml#

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

title: Clock bindings for Freescale i.MX6 Quad

maintainers:

  - Anson Huang <Anson.Huang@nxp.com>

properties:

  compatible:

    const: fsl,imx6q-ccm

  reg:

    maxItems: 1

  interrupts:

    description: CCM provides 2 interrupt requests, request 1 is to generate

      interrupt for frequency or mux change, request 2 is to generate

      interrupt for oscillator read or PLL lock.

    items:

      - description: CCM interrupt request 1

      - description: CCM interrupt request 2

    maxItems: 2

  '#clock-cells':

    const: 1

  clocks:

    items:

      - description: 24m osc

      - description: 32k osc

      - description: ckih1 clock input

      - description: anaclk1 clock input

      - description: anaclk2 clock input

  clock-names:

    items:

      - const: osc

      - const: ckil

      - const: ckih1

      - const: anaclk1

      - const: anaclk2

  fsl,pmic-stby-poweroff:

    $ref: /schemas/types.yaml#/definitions/flag

    description: |

      Use this property if the SoC should be powered off by external power

      management IC (PMIC) triggered via PMIC_STBY_REQ signal.

      Boards that are designed to initiate poweroff on PMIC_ON_REQ signal should

      be using "syscon-poweroff" driver instead.

required:

  - compatible

  - reg

  - interrupts

  - '#clock-cells'

examples:

  # Clock Control Module node:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    clock-controller@20c4000 {

        compatible = "fsl,imx6q-ccm";

        reg = <0x020c4000 0x4000>;

        interrupts = <0 87 IRQ_TYPE_LEVEL_HIGH>,

                     <0 88 IRQ_TYPE_LEVEL_HIGH>;

        #clock-cells = <1>;

    };