| Message ID | 20210405124900.v6.1.I248292623d3d0f6a4f0c5bc58478ca3c0062b49a@changeid |
|---|---|
| State | Superseded |
| Headers | show |
| Series | USB: misc: Add onboard_usb_hub driver | expand |
On Tue, Apr 06, 2021 at 11:30:01AM -0500, Rob Herring wrote: > On Mon, Apr 05, 2021 at 01:18:13PM -0700, Matthias Kaehlcke wrote: > > The Realtek RTS5411 is a USB 3.0 hub controller with 4 ports. > > > > This initial version of the binding only describes USB related > > aspects of the RTS5411, it does not cover the option of > > connecting the controller as an i2c slave. > > > > Signed-off-by: Matthias Kaehlcke <mka@chromium.org> > > --- > > > > Changes in v7: > > - added type ref for 'companion-hub' property > > > > Changes in v6: > > - Realtek binding instead of generic onboard_usb_hub > > - added 'companion-hub' property > > - added reference to 'usb-device.yaml' > > - 'fixed' indentation of compatible entries to keep yamllint happy > > - added 'additionalProperties' entry > > - updated commit message > > > > Changes in v5: > > - updated 'title' > > - only use standard USB compatible strings > > - deleted 'usb_hub' node > > - renamed 'usb_controller' node to 'usb-controller' > > - removed labels from USB nodes > > - added 'vdd-supply' to USB nodes > > > > Changes in v4: > > - none > > > > Changes in v3: > > - updated commit message > > - removed recursive reference to $self > > - adjusted 'compatible' definition to support multiple entries > > - changed USB controller phandle to be a node > > > > Changes in v2: > > - removed 'wakeup-source' and 'power-off-in-suspend' properties > > - consistently use spaces for indentation in example > > > > .../bindings/usb/realtek,rts5411.yaml | 59 +++++++++++++++++++ > > 1 file changed, 59 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/usb/realtek,rts5411.yaml > > > > diff --git a/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml > > new file mode 100644 > > index 000000000000..b59001972749 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml > > @@ -0,0 +1,59 @@ > > +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/usb/realtek,rts5411.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Binding for the Realtek RTS5411 USB 3.0 hub controller > > + > > +maintainers: > > + - Matthias Kaehlcke <mka@chromium.org> > > + > > +allOf: > > + - $ref: usb-device.yaml# > > + > > +properties: > > + compatible: > > + items: > > + - enum: > > + - usbbda,5411 > > + - usbbda,411 > > + > > reg: true > > to fix the error. Will fix in v8 (this is v7, even though the subject says otherwise, I forgot to increment the version number when sending). > > + vdd-supply: > > + description: > > + phandle to the regulator that provides power to the hub. > > + > > + companion-hub: > > + $ref: '/schemas/types.yaml#/definitions/phandle' > > + description: > > + phandle to the companion hub on the controller. > > This should be required I think. I suppose you could only hook up 2.0 > ports, but why. And 3.0 only wouldn't be USB compliant, would it? Agreed, that makes sense now that this is a specific binding for the RTS5411. It seems unlikely that a system would use a USB 3.0 capable hub on a USB 2.0 controller, and as you said 3.0 only wouldn't be USB compliant. I made the attribute initially optional because the binding was intended to be generic (bad idea), and for certain hubs a required 'companion-hub' wouldn't make sense (e.g. USB 2.0 only). > > + > > +required: > > + - compatible > > + - reg > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + usb-controller { > > 'usb' is the standard name. ack Thanks for your comments! m.
diff --git a/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml new file mode 100644 index 000000000000..b59001972749 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/realtek,rts5411.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/realtek,rts5411.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding for the Realtek RTS5411 USB 3.0 hub controller + +maintainers: + - Matthias Kaehlcke <mka@chromium.org> + +allOf: + - $ref: usb-device.yaml# + +properties: + compatible: + items: + - enum: + - usbbda,5411 + - usbbda,411 + + vdd-supply: + description: + phandle to the regulator that provides power to the hub. + + companion-hub: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: + phandle to the companion hub on the controller. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + usb-controller { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + + /* 2.0 hub on port 1 */ + hub_2_0: hub@1 { + compatible = "usbbda,5411"; + reg = <1>; + vdd-supply = <&pp3300_hub>; + companion-hub = <&hub_3_0>; + }; + + /* 3.0 hub on port 2 */ + hub_3_0: hub@2 { + compatible = "usbbda,411"; + reg = <2>; + vdd-supply = <&pp3300_hub>; + companion-hub = <&hub_2_0>; + }; + };
The Realtek RTS5411 is a USB 3.0 hub controller with 4 ports. This initial version of the binding only describes USB related aspects of the RTS5411, it does not cover the option of connecting the controller as an i2c slave. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> --- Changes in v7: - added type ref for 'companion-hub' property Changes in v6: - Realtek binding instead of generic onboard_usb_hub - added 'companion-hub' property - added reference to 'usb-device.yaml' - 'fixed' indentation of compatible entries to keep yamllint happy - added 'additionalProperties' entry - updated commit message Changes in v5: - updated 'title' - only use standard USB compatible strings - deleted 'usb_hub' node - renamed 'usb_controller' node to 'usb-controller' - removed labels from USB nodes - added 'vdd-supply' to USB nodes Changes in v4: - none 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/realtek,rts5411.yaml | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/realtek,rts5411.yaml