dt-bindings: timer: Convert i.MX TPM to json-schema

NXP Low Power Timer/Pulse Width Modulation Module (TPM)

The Timer/PWM Module (TPM) supports input capture, output compare,

and the generation of PWM signals to control electric motor and power

management applications. The counter, compare and capture registers

are clocked by an asynchronous clock that can remain enabled in low

power modes. TPM can support global counter bus where one TPM drives

the counter bus for the others, provided bit width is the same.

Required properties:

- compatible :	should be "fsl,imx7ulp-tpm"

- reg :		Specifies base physical address and size of the register sets

		for the clock event device and clock source device.

- interrupts :	Should be the clock event device interrupt.

- clocks :	The clocks provided by the SoC to drive the timer, must contain

		an entry for each entry in clock-names.

- clock-names : Must include the following entries: "ipg" and "per".

Example:

tpm5: tpm@40260000 {

	compatible = "fsl,imx7ulp-tpm";

	reg = <0x40260000 0x1000>;

	interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;

	clocks = <&clks IMX7ULP_CLK_NIC1_BUS_DIV>,

		 <&clks IMX7ULP_CLK_LPTPM5>;

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

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/timer/nxp,tpm-timer.yaml#

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

title: NXP Low Power Timer/Pulse Width Modulation Module (TPM)

maintainers:

  - Dong Aisheng <aisheng.dong@nxp.com>

description: |

  The Timer/PWM Module (TPM) supports input capture, output compare,

  and the generation of PWM signals to control electric motor and power

  management applications. The counter, compare and capture registers

  are clocked by an asynchronous clock that can remain enabled in low

  power modes. TPM can support global counter bus where one TPM drives

  the counter bus for the others, provided bit width is the same.

properties:

  compatible:

    const: fsl,imx7ulp-tpm

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

  clocks:

    items:

      - description: SoC TPM ipg clock

      - description: SoC TPM per clock

  clock-names:

    items:

      - const: ipg

      - const: per

required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names

additionalProperties: false

examples:

  - |

    #include <dt-bindings/clock/imx7ulp-clock.h>

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

    timer@40260000 {

        compatible = "fsl,imx7ulp-tpm";

        reg = <0x40260000 0x1000>;

        interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;

        clocks = <&scg1 IMX7ULP_CLK_NIC1_BUS_DIV>,

                 <&pcc2 IMX7ULP_CLK_LPTPM5>;

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

    };