smsc,usb3503.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/usb/smsc,usb3503.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: SMSC USB3503 High-Speed Hub Controller Device Tree Bindings
    8 
    9 maintainers:
   10   - Dongjin Kim <tobetter@gmail.com>
   11 
   12 properties:
   13   compatible:
   14     enum:
   15       - smsc,usb3503
   16       - smsc,usb3503a
   17 
   18   reg:
   19     maxItems: 1
   20 
   21   connect-gpios:
   22     maxItems: 1
   23     description: >
   24       GPIO for connect
   25 
   26   intn-gpios:
   27     maxItems: 1
   28     description: >
   29       GPIO for interrupt
   30 
   31   reset-gpios:
   32     maxItems: 1
   33     description: >
   34       GPIO for reset
   35 
   36   disabled-ports:
   37     $ref: /schemas/types.yaml#/definitions/uint32-array
   38     minItems: 1
   39     maxItems: 3
   40     items:
   41       minimum: 1
   42       maximum: 3
   43     description: >
   44       Specifies the ports unused using their port number. Do not describe this
   45       property if all ports have to be enabled.
   46 
   47   initial-mode:
   48     $ref: /schemas/types.yaml#/definitions/uint32
   49     enum: [1, 2]
   50     description: >
   51       Specifies initial mode. 1 for Hub mode, 2 for standby mode.
   52 
   53   clocks:
   54     maxItems: 1
   55     description: >
   56       Clock used for driving REFCLK signal. If not provided the driver assumes
   57       that clock signal is always available, its rate is specified by REF_SEL
   58       pins and a value from the primary reference clock frequencies table is
   59       used.
   60 
   61   clock-names:
   62     const: refclk
   63 
   64   refclk-frequency:
   65     $ref: /schemas/types.yaml#/definitions/uint32
   66     description: >
   67       Frequency of the REFCLK signal as defined by REF_SEL pins. If not
   68       provided, driver will not set rate of the REFCLK signal and assume that a
   69       value from the primary reference clock frequencies table is used.
   70 
   71 required:
   72   - compatible
   73 
   74 additionalProperties: false
   75 
   76 examples:
   77   - |
   78       i2c {
   79           #address-cells = <1>;
   80           #size-cells = <0>;
   81 
   82           usb-hub@8 {
   83               compatible = "smsc,usb3503";
   84               reg = <0x08>;
   85               connect-gpios = <&gpx3 0 1>;
   86               disabled-ports = <2 3>;
   87               intn-gpios = <&gpx3 4 1>;
   88               reset-gpios = <&gpx3 5 1>;
   89               initial-mode = <1>;
   90               clocks = <&clks 80>;
   91               clock-names = "refclk";
   92           };
   93       };
   94 
   95   - |
   96       #include <dt-bindings/gpio/gpio.h>
   97 
   98       usb-hub {
   99           /* I2C is not connected */
  100           compatible = "smsc,usb3503";
  101           initial-mode = <1>; /* initialize in HUB mode */
  102           disabled-ports = <1>;
  103           intn-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
  104           reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */
  105           connect-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* PE17 */
  106           refclk-frequency = <19200000>;
  107       };
  108 
  109 ...

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sys/contrib/device-tree/Bindings/usb/smsc,usb3503.yaml