new file mode 100644
@@ -0,0 +1,238 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/usb49xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip USB47xx/USB49xx USB 2.0 Hi-Speed Hub Controller
+
+maintainers:
+ - Christian Eggers <ceggers@arri.de>
+
+description: |
+ http://ww1.microchip.com/downloads/en/Appnotes/AN2651-Configuration-of-Microchip-USB47xx-USB49xx-Application-Note-00002651B.pdf
+
+properties:
+ compatible:
+ enum:
+ - microchip,usb4712
+ - microchip,usb4712i
+ - microchip,usb4715
+ - microchip,usb4715i
+ - microchip,usb4912
+ - microchip,usb4912i
+ - microchip,usb4914
+ - microchip,usb4914i
+ - microchip,usb4916
+ - microchip,usb4916i
+ - microchip,usb4925
+ - microchip,usb4925i
+ - microchip,usb4927
+ - microchip,usb4927i
+
+ reg:
+ maxItems: 1
+ description:
+ I2C address on the selected bus (usually <0x2D>).
+
+ reset-gpios:
+ maxItems: 1
+ description:
+ Specify the gpio for hub reset.
+
+ vdd-supply:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ Specify the regulator supplying vdd.
+
+ skip-config:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Skip Hub configuration, but only send the USB-Attach command.
+
+ vendor-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 65535
+ description:
+ Set USB Vendor ID of the hub.
+
+ product-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 65535
+ description:
+ Set USB Product ID of the hub.
+
+ device-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 65535
+ description:
+ Set USB Device ID of the hub.
+
+ language-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 65535
+ description:
+ Set USB Language ID.
+
+ manufacturer:
+ $ref: /schemas/types.yaml#/definitions/string
+ description:
+ Set USB Manufacturer string (max. 62 characters long).
+
+ product:
+ $ref: /schemas/types.yaml#/definitions/string
+ description:
+ Set USB Product string (max. 62 characters long).
+
+ bus-powered:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Selects bus powered operation.
+
+ self-powered:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Selects self powered operation (default).
+
+ disable-hi-speed:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Disable USB Hi-Speed support.
+
+ multi-tt:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Selects multi-transaction-translator (default).
+
+ single-tt:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Selects single-transaction-translator.
+
+ disable-eop:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Disable End of Packet generation in full-speed mode.
+
+ ganged-sensing:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Select ganged over-current sense type in self-powered mode.
+
+ individual-sensing:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Select individual over-current sense type in self-powered mode (default).
+
+ ganged-port-switching:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Select ganged port power switching mode.
+
+ individual-port-switching:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Select individual port power switching mode (default).
+
+ dynamic-power-switching:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Enable auto-switching from self- to bus-powered operation if the local
+ power source is removed or unavailable.
+
+ oc-delay-ns:
+ enum:
+ - 50
+ - 100
+ - 200
+ - 400
+ default: 200
+ description:
+ Delay time (in nanoseconds) for filtering the over-current sense inputs.
+ If an invalid value is given, the default is used instead.
+
+ compound-device:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Indicate the hub is part of a compound device.
+
+ port-mapping-mode:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Enable port mapping mode.
+
+ non-removable-ports:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Should specify the ports which have a non-removable device connected.
+
+ sp-disabled-ports:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Specifies the ports which will be self-power disabled.
+
+ bp-disabled-ports:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Specifies the ports which will be bus-power disabled.
+
+ power-on-time-ms:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 100
+ minimum: 0
+ maximum: 510
+ description:
+ Specifies the time (in milliseconds) it takes from the time the host
+ initiates the power-on sequence to a port until the port has adequate
+ power.
+
+ ocs-min-width-ms:
+ default: 5
+ minimum: 0
+ maximum: 5
+ description:
+ Minimum OCS pulse width (in milliseconds) required to detect an OCS
+ event.
+
+ hub-controller-port:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Hub port where the internal hub controller shall be connected. Usually
+ <number of ports>+1.
+
+additionalProperties: false
+
+required:
+ - compatible
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ i2c0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usb4916i@2d {
+ compatible = "microchip,usb4916i";
+ reg = <0x2d>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb_hub>;
+ /* usb49xx.c already assumes low-active, don't negate twice */
+ reset-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+ //skip-config;
+ //self-powered; /* power on default */
+ //individual-sensing; /* power on default */
+ //multi-tt; /* power on default */
+ //disable-eop; /* power on default */
+ //individual-port-switching; /* power on default */
+ //oc-delay-ns = <200>; /* power on default */
+ power-on-time-ms = <4>; /* T_ON,max = 4 ms for NCP380 */
+ ocs-min-width-ms = <0>; /* MIC2005 only outputs 2us FAULT pulses */
+ manufacturer = "Foo";
+ product = "Foo-Bar";
+ /* port 5 is connected to an internal SD-Card reader */
+ non-removable-ports = <5>;
+ };
+ };
+
+...