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| author | Alexander Stein <alexander.stein@ew.tq-group.com> | 2022-07-27 11:37:59 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-27 14:40:18 +0200 |
| commit | 40e58a8a7ca6ac7f03a5fbfdbc0119fc0caaa072 (patch) | |
| tree | 645fb46b4437ad8a7e9f59ba0c52c389bed6957d /Documentation/devicetree/bindings/usb | |
| parent | 76e960597635ee80d7c713f606b0f6ac9228d98e (diff) | |
| download | lwn-40e58a8a7ca6ac7f03a5fbfdbc0119fc0caaa072.tar.gz lwn-40e58a8a7ca6ac7f03a5fbfdbc0119fc0caaa072.zip | |
dt-bindings: usb: Add binding for TI USB8041 hub controller
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.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220727093801.687361-1-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/usb')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/ti,usb8041.yaml | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ti,usb8041.yaml b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml new file mode 100644 index 000000000000..e04fbd8ab0b7 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml @@ -0,0 +1,67 @@ +# 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: + - Alexander Stein <alexander.stein@ew.tq-group.com> + +allOf: + - $ref: usb-device.yaml# + +properties: + compatible: + enum: + - usb451,8140 + - usb451,8142 + + reg: true + + reset-gpios: + items: + - description: GPIO specifier for GRST# pin. + + vdd-supply: + description: + VDD power supply to the hub + + peer-hub: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the peer hub on the controller. + +required: + - compatible + - reg + - peer-hub + +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-gpios = <&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-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>; + }; + }; |