The TI USB8041 is a USB 3.0 hub controller with 4 ports. This initial version of the binding only describes USB related aspects of the USB8041, it does not cover the option of connecting the controller as an i2c slave. Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> --- Well, this is essentially a ripoff of Documentation/devicetree/bindings/usb/realtek,rts5411.yaml with USB IDs replaced, reset-gpio added and example adjusted. IMHO this should be merged together with realtek,rts5411.yaml. Is it ok to rename bindings files? I guess a common onboard-usb-hub.yaml matching the driver seens reasonable. Any recommendations how to proceed? .../devicetree/bindings/usb/ti,usb8041.yaml | 69 +++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/ti,usb8041.yaml diff --git a/Documentation/devicetree/bindings/usb/ti,usb8041.yaml b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml new file mode 100644 index 000000000000..9a49d60527b1 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ti,usb8041.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding for the TI USB8041 USB 3.0 hub controller + +maintainers: + - Matthias Kaehlcke <mka@xxxxxxxxxxxx> + +allOf: + - $ref: usb-device.yaml# + +properties: + compatible: + items: + - enum: + - usb451,8140 + - usb451,8142 + + reg: true + + reset-gpio: + maxItems: 1 + description: + GPIO specifier for GSRT# pin. + + vdd-supply: + description: + phandle to the regulator that provides power to the hub. + + peer-hub: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: + phandle to the peer hub on the controller. + +required: + - peer-hub + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + usb { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub_2_0: hub@1 { + compatible = "usb451,8142"; + reg = <1>; + peer-hub = <&hub_3_0>; + reset-gpio = <&gpio1 11 GPIO_ACTIVE_LOW>; + }; + + /* 3.0 hub on port 2 */ + hub_3_0: hub@2 { + compatible = "usb451,8140"; + reg = <2>; + peer-hub = <&hub_2_0>; + reset-gpio = <&gpio1 11 GPIO_ACTIVE_LOW>; + }; + }; -- 2.25.1
