allwinner,sun6i-a31-rtc.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/rtc/allwinner,sun6i-a31-rtc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Allwinner A31 RTC Device Tree Bindings
    8 
    9 maintainers:
   10   - Chen-Yu Tsai <wens@csie.org>
   11   - Maxime Ripard <mripard@kernel.org>
   12 
   13 properties:
   14   "#clock-cells":
   15     const: 1
   16 
   17   compatible:
   18     oneOf:
   19       - enum:
   20           - allwinner,sun6i-a31-rtc
   21           - allwinner,sun8i-a23-rtc
   22           - allwinner,sun8i-h3-rtc
   23           - allwinner,sun8i-r40-rtc
   24           - allwinner,sun8i-v3-rtc
   25           - allwinner,sun50i-h5-rtc
   26           - allwinner,sun50i-h6-rtc
   27           - allwinner,sun50i-h616-rtc
   28           - allwinner,sun50i-r329-rtc
   29       - items:
   30           - const: allwinner,sun50i-a64-rtc
   31           - const: allwinner,sun8i-h3-rtc
   32       - items:
   33           - const: allwinner,sun20i-d1-rtc
   34           - const: allwinner,sun50i-r329-rtc
   35 
   36   reg:
   37     maxItems: 1
   38 
   39   interrupts:
   40     minItems: 1
   41     items:
   42       - description: RTC Alarm 0
   43       - description: RTC Alarm 1
   44 
   45   clocks:
   46     minItems: 1
   47     maxItems: 4
   48 
   49   clock-names:
   50     minItems: 1
   51     maxItems: 4
   52 
   53   clock-output-names:
   54     minItems: 1
   55     maxItems: 3
   56     description:
   57       The RTC provides up to three clocks
   58         - the Low Frequency Oscillator or LOSC, at index 0,
   59         - the Low Frequency Oscillator External output (X32KFOUT in
   60           the datasheet), at index 1,
   61         - the Internal Oscillator, at index 2.
   62 
   63 allOf:
   64   - $ref: "rtc.yaml#"
   65   - if:
   66       properties:
   67         compatible:
   68           contains:
   69             const: allwinner,sun6i-a31-rtc
   70 
   71     then:
   72       properties:
   73         clock-output-names:
   74           maxItems: 1
   75 
   76   - if:
   77       properties:
   78         compatible:
   79           contains:
   80             enum:
   81               - allwinner,sun8i-a23-rtc
   82               - allwinner,sun8i-r40-rtc
   83               - allwinner,sun8i-v3-rtc
   84 
   85     then:
   86       properties:
   87         clock-output-names:
   88           minItems: 2
   89           maxItems: 2
   90 
   91   - if:
   92       properties:
   93         compatible:
   94           contains:
   95             enum:
   96               - allwinner,sun8i-h3-rtc
   97               - allwinner,sun50i-h5-rtc
   98               - allwinner,sun50i-h6-rtc
   99 
  100     then:
  101       properties:
  102         clock-output-names:
  103           minItems: 3
  104 
  105   - if:
  106       properties:
  107         compatible:
  108           contains:
  109             const: allwinner,sun50i-h616-rtc
  110 
  111     then:
  112       properties:
  113         clocks:
  114           items:
  115             - description: Bus clock for register access
  116             - description: 24 MHz oscillator
  117             - description: 32 kHz clock from the CCU
  118 
  119         clock-names:
  120           items:
  121             - const: bus
  122             - const: hosc
  123             - const: pll-32k
  124 
  125       required:
  126         - clocks
  127         - clock-names
  128 
  129   - if:
  130       properties:
  131         compatible:
  132           contains:
  133             const: allwinner,sun50i-r329-rtc
  134 
  135     then:
  136       properties:
  137         clocks:
  138           minItems: 3
  139           items:
  140             - description: Bus clock for register access
  141             - description: 24 MHz oscillator
  142             - description: AHB parent for internal SPI clock
  143             - description: External 32768 Hz oscillator
  144 
  145         clock-names:
  146           minItems: 3
  147           items:
  148             - const: bus
  149             - const: hosc
  150             - const: ahb
  151             - const: ext-osc32k
  152 
  153       required:
  154         - clocks
  155         - clock-names
  156 
  157   - if:
  158       properties:
  159         compatible:
  160           contains:
  161             enum:
  162               - allwinner,sun8i-r40-rtc
  163               - allwinner,sun50i-h616-rtc
  164               - allwinner,sun50i-r329-rtc
  165 
  166     then:
  167       properties:
  168         interrupts:
  169           maxItems: 1
  170 
  171     else:
  172       properties:
  173         interrupts:
  174           minItems: 2
  175 
  176 required:
  177   - "#clock-cells"
  178   - compatible
  179   - reg
  180   - interrupts
  181 
  182 additionalProperties: false
  183 
  184 examples:
  185   - |
  186     rtc: rtc@1f00000 {
  187         compatible = "allwinner,sun6i-a31-rtc";
  188         reg = <0x01f00000 0x400>;
  189         interrupts = <0 40 4>, <0 41 4>;
  190         clock-output-names = "osc32k";
  191         clocks = <&ext_osc32k>;
  192         #clock-cells = <1>;
  193     };
  194 
  195 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/rtc/allwinner,sun6i-a31-rtc.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/rtc/allwinner,sun6i-a31-rtc.yaml