dt-bindings: Add dt-binding for mpm counter

%YAML 1.2

---

$id: http://devicetree.org/schemas/bindings/arm/msm/mpm_counter.yaml#

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

title: MSM MPM sleep counter (mpm-v2)

maintainers:

  - Prakruthi Deepak Heragu <pheragu@codeaurora.org>

description: |

  The MPM provides a timetick that starts when the device is powered up and

  is not reset by any of the boot loaders or the HLOS. The MPM timetick counter

  driver provides an api to get this value.

properties:

  compatible:

    const: qcom,mpm2-sleep-counter

  reg:

    description: Specifies the physical address of the timetick count register.

  clock-frequency:

    description: the physical counter frequency.

required:

  - compatible

  - reg

example:

  - |

    qcom,mpm2-sleep-counter@4a3000 {

      compatible = "qcom,mpm2-sleep-counter";

      reg = <0x4a3000 0x1000>;

      clock-frequency = <32768>;

    };