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     1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/usb/maxim,max3420-udc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: MAXIM MAX3420/1 USB Peripheral Controller
    8 
    9 maintainers:
   10   - Jassi Brar <jaswinder.singh@linaro.org>
   11 
   12 description: |
   13   The controller provices USB2.0 compliant FullSpeed peripheral
   14   implementation over the SPI interface.
   15 
   16   Specifications about the part can be found at:
   17     http://datasheets.maximintegrated.com/en/ds/MAX3420E.pdf
   18 
   19 properties:
   20   compatible:
   21     enum:
   22       - maxim,max3420-udc
   23       - maxim,max3421-udc
   24 
   25   reg:
   26     maxItems: 1
   27 
   28   interrupts:
   29     items:
   30       - description: usb irq from max3420
   31       - description: vbus detection irq
   32     minItems: 1
   33 
   34   interrupt-names:
   35     items:
   36       - const: udc
   37       - const: vbus
   38     minItems: 1
   39 
   40   spi-max-frequency:
   41     maximum: 26000000
   42 
   43 required:
   44   - compatible
   45   - reg
   46   - interrupts
   47   - interrupt-names
   48 
   49 additionalProperties: false
   50 
   51 examples:
   52   - |
   53       #include <dt-bindings/gpio/gpio.h>
   54       #include <dt-bindings/interrupt-controller/irq.h>
   55       spi0 {
   56             #address-cells = <1>;
   57             #size-cells = <0>;
   58 
   59             udc@0 {
   60                   compatible = "maxim,max3420-udc";
   61                   reg = <0>;
   62                   interrupt-parent = <&gpio>;
   63                   interrupts = <0 IRQ_TYPE_EDGE_FALLING>, <10 IRQ_TYPE_EDGE_BOTH>;
   64                   interrupt-names = "udc", "vbus";
   65                   spi-max-frequency = <12500000>;
   66             };
   67       };
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