sp810.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/arm/sp810.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: ARM Versatile Express SP810 System Controller bindings
    8 
    9 maintainers:
   10   - Andre Przywara <andre.przywara@arm.com>
   11 
   12 description:
   13   The Arm SP810 system controller provides clocks, timers and a watchdog.
   14 
   15 # We need a select here so we don't match all nodes with 'arm,primecell'
   16 select:
   17   properties:
   18     compatible:
   19       contains:
   20         const: arm,sp810
   21   required:
   22     - compatible
   23 
   24 properties:
   25   compatible:
   26     items:
   27       - const: arm,sp810
   28       - const: arm,primecell
   29 
   30   reg:
   31     maxItems: 1
   32 
   33   clock-names:
   34     items:
   35       - const: refclk
   36       - const: timclk
   37       - const: apb_pclk
   38 
   39   clocks:
   40     items:
   41       - description: reference clock
   42       - description: timer clock
   43       - description: APB register access clock
   44 
   45   "#clock-cells":
   46     const: 1
   47 
   48   clock-output-names:
   49     maxItems: 4
   50 
   51   assigned-clocks:
   52     maxItems: 4
   53 
   54   assigned-clock-parents:
   55     maxItems: 4
   56 
   57 additionalProperties: false
   58 
   59 required:
   60   - compatible
   61   - reg
   62   - clocks
   63   - clock-names
   64   - "#clock-cells"
   65 
   66 examples:
   67   - |
   68     sysctl@20000 {
   69         compatible = "arm,sp810", "arm,primecell";
   70         reg = <0x020000 0x1000>;
   71         clocks = <&v2m_refclk32khz>, <&v2m_refclk1mhz>, <&smbclk>;
   72         clock-names = "refclk", "timclk", "apb_pclk";
   73         #clock-cells = <1>;
   74         clock-output-names = "timerclken0", "timerclken1",
   75                              "timerclken2", "timerclken3";
   76         assigned-clocks = <&v2m_sysctl 0>, <&v2m_sysctl 1>,
   77                           <&v2m_sysctl 3>, <&v2m_sysctl 3>;
   78         assigned-clock-parents = <&v2m_refclk1mhz>, <&v2m_refclk1mhz>,
   79                                  <&v2m_refclk1mhz>, <&v2m_refclk1mhz>;
   80     };

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sys/contrib/device-tree/Bindings/arm/sp810.yaml