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Date: Mon, 28 Sep 2020 10:13:54 -0700 From: Matthias Kaehlcke <mka@...omium.org> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Rob Herring <robh+dt@...nel.org>, Frank Rowand <frowand.list@...il.com> Cc: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, Bastien Nocera <hadess@...ess.net>, Stephen Boyd <swboyd@...omium.org>, Douglas Anderson <dianders@...omium.org>, Alan Stern <stern@...land.harvard.edu>, Ravi Chandra Sadineni <ravisadineni@...omium.org>, Krzysztof Kozlowski <krzk@...nel.org>, devicetree@...r.kernel.org, Peter Chen <peter.chen@....com>, Matthias Kaehlcke <mka@...omium.org> Subject: [PATCH v4 1/2] dt-bindings: usb: Add binding for discrete onboard USB hubs Discrete onboard USB hubs (an example for such a hub is the Realtek RTS5411) need to be powered and may require initialization of other resources (like GPIOs or clocks) to work properly. This adds a device tree binding for these hubs. Signed-off-by: Matthias Kaehlcke <mka@...omium.org> --- (no changes since v3) Changes in v3: - updated commit message - removed recursive reference to $self - adjusted 'compatible' definition to support multiple entries - changed USB controller phandle to be a node Changes in v2: - removed 'wakeup-source' and 'power-off-in-suspend' properties - consistently use spaces for indentation in example .../bindings/usb/onboard_usb_hub.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml diff --git a/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml b/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml new file mode 100644 index 000000000000..c9783da3e75c --- /dev/null +++ b/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/onboard_usb_hub.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding for onboard USB hubs + +maintainers: + - Matthias Kaehlcke <mka@...omium.org> + +properties: + compatible: + items: + - enum: + - realtek,rts5411 + - const: onboard-usb-hub + + vdd-supply: + description: + phandle to the regulator that provides power to the hub. + +required: + - compatible + - vdd-supply + +examples: + - | + usb_hub: usb-hub { + compatible = "realtek,rts5411", "onboard-usb-hub"; + vdd-supply = <&pp3300_hub>; + }; + + usb_controller { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub@1 { + compatible = "usbbda,5411"; + reg = <1>; + hub = <&usb_hub>; + }; + + /* 3.0 hub on port 2 */ + hub@2 { + compatible = "usbbda,411"; + reg = <2>; + hub = <&usb_hub>; + }; + }; + +... -- 2.28.0.709.gb0816b6eb0-goog
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