FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pinctrl/microchip,sparx5-sgpio.yaml

     # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/pinctrl/microchip,sparx5-sgpio.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Microsemi/Microchip Serial GPIO controller
     
     maintainers:
      - Lars Povlsen <lars.povlsen@microchip.com>
    
    description: |
      By using a serial interface, the SIO controller significantly extend
      the number of available GPIOs with a minimum number of additional
      pins on the device. The primary purpose of the SIO controllers is to
      connect control signals from SFP modules and to act as an LED
      controller.
    
    properties:
      $nodename:
        pattern: "^gpio@[0-9a-f]+$"
    
      compatible:
        enum:
          - microchip,sparx5-sgpio
          - mscc,ocelot-sgpio
          - mscc,luton-sgpio
    
      "#address-cells":
        const: 1
    
      "#size-cells":
        const: 0
    
      reg:
        maxItems: 1
    
      clocks:
        maxItems: 1
    
      microchip,sgpio-port-ranges:
        description: This is a sequence of tuples, defining intervals of
          enabled ports in the serial input stream. The enabled ports must
          match the hardware configuration in order for signals to be
          properly written/read to/from the controller holding
          registers. Being tuples, then number of arguments must be
          even. The tuples mast be ordered (low, high) and are
          inclusive.
        $ref: /schemas/types.yaml#/definitions/uint32-matrix
        items:
          items:
            - description: |
                "low" indicates start bit number of range
              minimum: 0
              maximum: 31
            - description: |
                "high" indicates end bit number of range
              minimum: 0
              maximum: 31
        minItems: 1
        maxItems: 32
    
      bus-frequency:
        description: The sgpio controller frequency (Hz). This dictates
          the serial bitstream speed, which again affects the latency in
          getting control signals back and forth between external shift
          registers. The speed must be no larger than half the system
          clock, and larger than zero.
        default: 12500000
    
      resets:
        maxItems: 1
    
      reset-names:
        items:
          - const: switch
    
    patternProperties:
      "^gpio@[0-1]$":
        type: object
        properties:
          compatible:
            const: microchip,sparx5-sgpio-bank
    
          reg:
            description: |
              The GPIO bank number. "0" is designates the input pin bank,
              "1" the output bank.
            maxItems: 1
    
          gpio-controller: true
    
          '#gpio-cells':
            description: |
             Specifies the pin (port and bit) and flags. Note that the
             SGIO pin is defined by *2* numbers, a port number between 0
             and 31, and a bit index, 0 to 3. The maximum bit number is
             controlled indirectly by the "ngpios" property: (ngpios/32).
            const: 3
   
         interrupts:
           description: Specifies the sgpio IRQ (in parent controller)
           maxItems: 1
   
         interrupt-controller: true
   
         '#interrupt-cells':
           description:
             Specifies the pin (port and bit) and flags, as defined in
             defined in include/dt-bindings/interrupt-controller/irq.h
           const: 3
   
         ngpios:
           description: The numbers of GPIO's exposed. This must be a
             multiple of 32.
           minimum: 32
           maximum: 128
   
       required:
         - compatible
         - reg
         - gpio-controller
         - '#gpio-cells'
         - ngpios
   
       additionalProperties: false
   
   additionalProperties: false
   
   required:
     - compatible
     - reg
     - clocks
     - microchip,sgpio-port-ranges
     - "#address-cells"
     - "#size-cells"
   
   examples:
     - |
       #include <dt-bindings/interrupt-controller/arm-gic.h>
       sgpio2: gpio@1101059c {
         #address-cells = <1>;
         #size-cells = <0>;
         compatible = "microchip,sparx5-sgpio";
         clocks = <&sys_clk>;
         pinctrl-0 = <&sgpio2_pins>;
         pinctrl-names = "default";
         reg = <0x1101059c 0x118>;
         microchip,sgpio-port-ranges = <0 0>, <16 18>, <28 31>;
         bus-frequency = <25000000>;
         sgpio_in2: gpio@0 {
           reg = <0>;
           compatible = "microchip,sparx5-sgpio-bank";
           gpio-controller;
           #gpio-cells = <3>;
           ngpios = <96>;
           interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
           interrupt-controller;
           #interrupt-cells = <3>;
         };
         sgpio_out2: gpio@1 {
           compatible = "microchip,sparx5-sgpio-bank";
           reg = <1>;
           gpio-controller;
           #gpio-cells = <3>;
           ngpios = <96>;
         };
       };

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