Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Marvell Global Timer (GTI) system watchdog
   8
   9 maintainers:
  10   - Bharat Bhushan <bbhushan2@marvell.com>
  11
  12 allOf:
  13   - $ref: watchdog.yaml#
  14
  15 properties:
  16   compatible:
  17     oneOf:
  18       - enum:
  19           - marvell,cn9670-wdt
  20           - marvell,cn10624-wdt
  21
  22       - items:
  23           - enum:
  24               - marvell,cn9880-wdt
  25               - marvell,cnf9535-wdt
  26           - const: marvell,cn9670-wdt
  27
  28       - items:
  29           - enum:
  30               - marvell,cn10308-wdt
  31               - marvell,cnf10518-wdt
  32           - const: marvell,cn10624-wdt
  33
  34   reg:
  35     maxItems: 1
  36
  37   interrupts:
  38     maxItems: 1
  39
  40   clocks:
  41     maxItems: 1
  42
  43   clock-names:
  44     items:
  45       - const: refclk
  46
  47   marvell,wdt-timer-index:
  48     $ref: /schemas/types.yaml#/definitions/uint32
  49     minimum: 0
  50     maximum: 63
  51     description:
  52       An SoC have many timers (up to 64), firmware can reserve one or more timer
  53       for some other use case and configures one of the global timer as watchdog
  54       timer. Firmware will update this field with the timer number configured
  55       as watchdog timer.
  56
  57 required:
  58   - compatible
  59   - reg
  60   - interrupts
  61   - clocks
  62   - clock-names
  63
  64 unevaluatedProperties: false
  65
  66 examples:
  67   - |
  68     #include <dt-bindings/interrupt-controller/arm-gic.h>
  69     soc {
  70         #address-cells = <2>;
  71         #size-cells = <2>;
  72
  73         watchdog@802000040000 {
  74             compatible = "marvell,cn9670-wdt";
  75             reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
  76             interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
  77             clocks = <&sclk>;
  78             clock-names = "refclk";
  79             marvell,wdt-timer-index = <63>;
  80         };
  81     };
  82
  83 ...