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

title: QTI MSM Watchdog

maintainers:
  - Prakruthi Deepak Heragu <pheragu@quicinc.com>

description: |+
  Watchdog timer is configured with a bark and a bite time.
  If the watchdog is not "pet" at regular intervals, the system
  is assumed to have become non responsive and needs to be reset.
  A warning in the form of a bark timeout leads to a bark interrupt
  and a kernel panic. If the watchdog timer is still not reset,
  a bite timeout occurs, which is an interrupt in the secure mode,
  which leads to a reset of the SOC via the secure watchdog. The
  driver needs the petting time, and the bark timeout to be programmed
  into the watchdog, as well as the bark and bite irqs.

  The device tree parameters for the watchdog are:

properties:
  compatible:
    Usage: required
    Value type: <string>
    Definition: Must be "qcom,msm-watchdog"

  reg:
    Usage: required
    Value type: <prop-encoded-array>
    Definition: offset and length of the register set for the watchdog block.

  reg-names:
    Usage: required
    Value type: <string>
    Definition: names corresponding to each reg property value (base required).
          "wdt-base" - physical base address of watchdog timer registers
          "wdt-absent-base" - physical base address of watchdog absent register

  interrupts:
     Usage: required
     Value type: <prop-encoded-array>
     Definition: should contain bark and bite irq numbers

example:
  - |
    wdog: qcom,wdt@17c10000{
	compatible = "qcom,msm-watchdog";
	reg = <0x17c10000 0x1000>;
	reg-names = "wdt-base";
	interrupts = <0 0 IRQ_TYPE_LEVEL_HIGH>,
                <0 1 IRQ_TYPE_LEVEL_HIGH>;
    };
...