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Diffstat (limited to 'Documentation/devicetree/bindings/usb/microchip,usb5744.yaml')
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1 files changed, 111 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml new file mode 100644 index 000000000000..e2a72deae776 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml @@ -0,0 +1,111 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/microchip,usb5744.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip USB5744 4-port Hub Controller + +description: + Microchip's USB5744 SmartHubTM IC is a 4 port, SuperSpeed (SS)/Hi-Speed (HS), + low power, low pin count configurable and fully compliant with the USB 3.1 + Gen 1 specification. The USB5744 also supports Full Speed (FS) and Low Speed + (LS) USB signaling, offering complete coverage of all defined USB operating + speeds. The new SuperSpeed hubs operate in parallel with the USB 2.0 + controller, so 5 Gbps SuperSpeed data transfers are not affected by slower + USB 2.0 traffic. + +maintainers: + - Michal Simek <michal.simek@amd.com> + - Mubin Sayyed <mubin.sayyed@amd.com> + - Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> + +properties: + compatible: + enum: + - usb424,2744 + - usb424,5744 + - microchip,usb5744 + + reg: + maxItems: 1 + + reset-gpios: + maxItems: 1 + description: + GPIO controlling the GRST# pin. + + vdd-supply: + description: + 3V3 power supply to the hub + + vdd2-supply: + description: + 1V2 power supply to the hub + + peer-hub: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the peer hub on the controller. + + i2c-bus: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle of an usb hub connected via i2c bus. + +required: + - compatible + - reg + +allOf: + - if: + properties: + compatible: + contains: + const: microchip,usb5744 + then: + properties: + reset-gpios: false + vdd-supply: false + vdd2-supply: false + peer-hub: false + i2c-bus: false + else: + $ref: /schemas/usb/usb-device.yaml + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + i2c: i2c { + #address-cells = <1>; + #size-cells = <0>; + hub: usb-hub@2d { + compatible = "microchip,usb5744"; + reg = <0x2d>; + }; + }; + + usb { + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub_2_0: hub@1 { + compatible = "usb424,2744"; + reg = <1>; + peer-hub = <&hub_3_0>; + i2c-bus = <&hub>; + reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>; + }; + + /* 3.0 hub on port 2 */ + hub_3_0: hub@2 { + compatible = "usb424,5744"; + reg = <2>; + peer-hub = <&hub_2_0>; + i2c-bus = <&hub>; + reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>; + }; + }; |