Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/rtc/xlnx,zynqmp-rtc.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
   8
   9 description:
  10   RTC controller for the Xilinx Zynq MPSoC Real Time Clock.
  11   The RTC controller has separate IRQ lines for seconds and alarm.
  12
  13 maintainers:
  14   - Michal Simek <michal.simek@amd.com>
  15
  16 allOf:
  17   - $ref: rtc.yaml#
  18
  19 properties:
  20   compatible:
  21     oneOf:
  22       - const: xlnx,zynqmp-rtc
  23       - items:
  24           - enum:
  25               - xlnx,versal-rtc
  26               - xlnx,versal-net-rtc
  27           - const: xlnx,zynqmp-rtc
  28
  29   reg:
  30     maxItems: 1
  31
  32   clocks:
  33     maxItems: 1
  34
  35   clock-names:
  36     items:
  37       - const: rtc
  38
  39   interrupts:
  40     maxItems: 2
  41
  42   interrupt-names:
  43     items:
  44       - const: alarm
  45       - const: sec
  46
  47   calibration:
  48     description: |
  49       calibration value for 1 sec period which will
  50       be programmed directly to calibration register.
  51     $ref: /schemas/types.yaml#/definitions/uint32
  52     minimum: 0x1
  53     maximum: 0x1FFFFF
  54     default: 0x198233
  55     deprecated: true
  56
  57   power-domains:
  58     maxItems: 1
  59
  60 required:
  61   - compatible
  62   - reg
  63   - interrupts
  64   - interrupt-names
  65
  66 additionalProperties: false
  67
  68 examples:
  69   - |
  70     soc {
  71       #address-cells = <2>;
  72       #size-cells = <2>;
  73
  74       rtc: rtc@ffa60000 {
  75         compatible = "xlnx,zynqmp-rtc";
  76         reg = <0x0 0xffa60000 0x0 0x100>;
  77         interrupt-parent = <&gic>;
  78         interrupts = <0 26 4>, <0 27 4>;
  79         interrupt-names = "alarm", "sec";
  80         calibration = <0x198233>;
  81         clock-names = "rtc";
  82         clocks = <&rtc_clk>;
  83       };
  84     };