%YAML 1.2
---
$id: http://devicetree.org/schemas/bindings/arm/msm/subsystem-sleep-stats.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: The document describes the device tree binding for subsystem-sleep-stats

maintainers:
  - Tushar Nimkar <tnimkar@qti.qualcomm.com>

description: |+
  Differet Subsystems maintains stats data in SMEM.
  It tells about the individual subsystem information at any given
  time like system sleep counts, system sleep last entered at
  and accumulated duration etc. This drive provide a IOCTL way
  to read those stats from respective SMEMs.

The required properties for subsystem stats driver is:

properties:
 compatible:
   Usage: required
   Value type: <string>
   Definition: Should be "qcom,subsystem-sleep-stats".

  reg:
    maxItems: 1

  ddr-freq-update:
    Usage: optional
    Value type: <boolean>
    Definition: Boolean property to support to get ddr freq distribution.

example:
  - |
    subsystem-sleep-stats {
		compatible = "qcom,subsystem-sleep-stats";
		reg = <0xc3f0000 0 0x400>;
	};
  - |
    subsystem-sleep-stats {
		compatible = "qcom,subsystem-sleep-stats";
		reg = <0xc3f0000 0 0x400>;
		ddr-freq-update;
	};
  - |
    subsystem-sleep-stats@4690000 {
		compatible = "qcom,subsystem-sleep-stats-v2";
		reg = <0x4690000 0x400>;
	};