Documentation/devicetree/bindings/rtc/renesas,sh-rtc.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/rtc/renesas,sh-rtc.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Real Time Clock for Renesas SH and ARM SoCs
   8
   9 maintainers:
  10   - Chris Brandt <chris.brandt@renesas.com>
  11   - Geert Uytterhoeven <geert+renesas@glider.be>
  12
  13 properties:
  14   compatible:
  15     items:
  16       - const: renesas,r7s72100-rtc  # RZ/A1H
  17       - const: renesas,sh-rtc
  18
  19   reg:
  20     maxItems: 1
  21
  22   interrupts:
  23     maxItems: 3
  24
  25   interrupt-names:
  26     items:
  27       - const: alarm
  28       - const: period
  29       - const: carry
  30
  31   clocks:
  32     # The functional clock source for the RTC controller must be listed
  33     # first (if it exists). Additionally, potential clock counting sources
  34     # are to be listed.
  35     minItems: 1
  36     maxItems: 4
  37
  38   clock-names:
  39     # The functional clock must be labeled as "fck". Other clocks
  40     # may be named in accordance to the SoC hardware manuals.
  41     minItems: 1
  42     maxItems: 4
  43     items:
  44       enum: [ fck, rtc_x1, rtc_x3, extal ]
  45
  46   power-domains:
  47     maxItems: 1
  48
  49 required:
  50   - compatible
  51   - reg
  52   - interrupts
  53   - interrupt-names
  54   - clocks
  55   - clock-names
  56   - power-domains
  57
  58 additionalProperties: false
  59
  60 examples:
  61   - |
  62     #include <dt-bindings/clock/r7s72100-clock.h>
  63     #include <dt-bindings/interrupt-controller/arm-gic.h>
  64     #include <dt-bindings/interrupt-controller/irq.h>
  65
  66     rtc: rtc@fcff1000 {
  67         compatible = "renesas,r7s72100-rtc", "renesas,sh-rtc";
  68         reg = <0xfcff1000 0x2e>;
  69         interrupts = <GIC_SPI 276 IRQ_TYPE_EDGE_RISING>,
  70                      <GIC_SPI 277 IRQ_TYPE_EDGE_RISING>,
  71                      <GIC_SPI 278 IRQ_TYPE_EDGE_RISING>;
  72         interrupt-names = "alarm", "period", "carry";
  73         clocks = <&mstp6_clks R7S72100_CLK_RTC>, <&rtc_x1_clk>,
  74                  <&rtc_x3_clk>, <&extal_clk>;
  75         power-domains = <&cpg_clocks>;
  76         clock-names = "fck", "rtc_x1", "rtc_x3", "extal";
  77     };