canaan,k210-sysctl.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/mfd/canaan,k210-sysctl.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Canaan Kendryte K210 System Controller Device Tree Bindings
    8 
    9 maintainers:
   10   - Damien Le Moal <damien.lemoal@wdc.com>
   11 
   12 description:
   13   Canaan Inc. Kendryte K210 SoC system controller which provides a
   14   register map for controlling the clocks, reset signals and pin power
   15   domains of the SoC.
   16 
   17 properties:
   18   compatible:
   19     items:
   20       - const: canaan,k210-sysctl
   21       - const: syscon
   22       - const: simple-mfd
   23 
   24   clocks:
   25     maxItems: 1
   26     description:
   27       System controller Advanced Power Bus (APB) interface clock source.
   28 
   29   clock-names:
   30     items:
   31       - const: pclk
   32 
   33   reg:
   34     maxItems: 1
   35 
   36   clock-controller:
   37     # Child node
   38     type: object
   39     $ref: "../clock/canaan,k210-clk.yaml"
   40     description:
   41       Clock controller for the SoC clocks. This child node definition
   42       should follow the bindings specified in
   43       Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml.
   44 
   45   reset-controller:
   46     # Child node
   47     type: object
   48     $ref: "../reset/canaan,k210-rst.yaml"
   49     description:
   50       Reset controller for the SoC. This child node definition
   51       should follow the bindings specified in
   52       Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml.
   53 
   54   syscon-reboot:
   55     # Child node
   56     type: object
   57     $ref: "../power/reset/syscon-reboot.yaml"
   58     description:
   59       Reboot method for the SoC. This child node definition
   60       should follow the bindings specified in
   61       Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml.
   62 
   63 required:
   64   - compatible
   65   - clocks
   66   - reg
   67   - clock-controller
   68 
   69 additionalProperties: false
   70 
   71 examples:
   72   - |
   73     #include <dt-bindings/clock/k210-clk.h>
   74     #include <dt-bindings/reset/k210-rst.h>
   75 
   76     clocks {
   77       in0: oscllator {
   78         compatible = "fixed-clock";
   79         #clock-cells = <0>;
   80         clock-frequency = <26000000>;
   81       };
   82     };
   83 
   84     sysctl: syscon@50440000 {
   85       compatible = "canaan,k210-sysctl",
   86                    "syscon", "simple-mfd";
   87       reg = <0x50440000 0x100>;
   88       clocks = <&sysclk K210_CLK_APB1>;
   89       clock-names = "pclk";
   90 
   91       sysclk: clock-controller {
   92         #clock-cells = <1>;
   93         compatible = "canaan,k210-clk";
   94         clocks = <&in0>;
   95       };
   96 
   97       sysrst: reset-controller {
   98         compatible = "canaan,k210-rst";
   99         #reset-cells = <1>;
  100       };
  101 
  102       reboot: syscon-reboot {
  103         compatible = "syscon-reboot";
  104         regmap = <&sysctl>;
  105         offset = <48>;
  106         mask = <1>;
  107         value = <1>;
  108       };
  109     };

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sys/contrib/device-tree/Bindings/mfd/canaan,k210-sysctl.yaml