The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/mfd/ti,j721e-system-controller.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 # Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: TI J721e System Controller Registers R/W Device Tree Bindings
    9 
   10 description: |
   11   This represents the Control Module registers (CTRL_MMR0) on the SoC.
   12   System controller node represents a register region containing a set
   13   of miscellaneous registers. The registers are not cohesive enough to
   14   represent as any specific type of device. The typical use-case is
   15   for some other node's driver, or platform-specific code, to acquire
   16   a reference to the syscon node (e.g. by phandle, node path, or
   17   search using a specific compatible value), interrogate the node (or
   18   associated OS driver) to determine the location of the registers,
   19   and access the registers directly.
   20 
   21 maintainers:
   22   - Kishon Vijay Abraham I <kishon@ti.com>
   23   - Roger Quadros <rogerq@kernel.org>
   24 
   25 properties:
   26   compatible:
   27     items:
   28       - enum:
   29           - ti,j721e-system-controller
   30       - const: syscon
   31       - const: simple-mfd
   32 
   33   reg:
   34     maxItems: 1
   35 
   36   "#address-cells":
   37     const: 1
   38 
   39   "#size-cells":
   40     const: 1
   41 
   42   ranges: true
   43 
   44 patternProperties:
   45   # Optional children
   46   "^mux-controller@[0-9a-f]+$":
   47     type: object
   48     description:
   49       This is the SERDES lane control mux.
   50 
   51   "^clock-controller@[0-9a-f]+$":
   52     type: object
   53     $ref: /schemas/clock/ti,am654-ehrpwm-tbclk.yaml#
   54     description:
   55       Clock provider for TI EHRPWM nodes.
   56 
   57 required:
   58   - compatible
   59   - reg
   60   - "#address-cells"
   61   - "#size-cells"
   62   - ranges
   63 
   64 additionalProperties: false
   65 
   66 examples:
   67   - |
   68     scm_conf: scm-conf@100000 {
   69         compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
   70         reg = <0x00100000 0x1c000>;
   71         #address-cells = <1>;
   72         #size-cells = <1>;
   73         ranges;
   74 
   75         serdes_ln_ctrl: mux-controller@4080 {
   76             compatible = "mmio-mux";
   77             reg = <0x00004080 0x50>;
   78 
   79             #mux-control-cells = <1>;
   80             mux-reg-masks =
   81                 <0x4080 0x3>, <0x4084 0x3>, /* SERDES0 lane0/1 select */
   82                 <0x4090 0x3>, <0x4094 0x3>, /* SERDES1 lane0/1 select */
   83                 <0x40a0 0x3>, <0x40a4 0x3>, /* SERDES2 lane0/1 select */
   84                 <0x40b0 0x3>, <0x40b4 0x3>, /* SERDES3 lane0/1 select */
   85                 <0x40c0 0x3>, <0x40c4 0x3>, <0x40c8 0x3>, <0x40cc 0x3>;
   86                 /* SERDES4 lane0/1/2/3 select */
   87         };
   88 
   89         clock-controller@4140 {
   90             compatible = "ti,am654-ehrpwm-tbclk", "syscon";
   91             reg = <0x4140 0x18>;
   92             #clock-cells = <1>;
   93         };
   94     };
   95 ...

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