On Mon, Oct 23, 2017 at 11:57:18PM +0200, Martin Blumenstingl wrote:
> This extends the existing example from the USB xHCI binding
> documentation so it includes the roothub and an actual device.
> The goal of this is to show that the roothub is specified alongside the
> actual devices on the USB bus (which is important because a device on
> the USB bus - for example a hub - might need it's own phys / phy-names
> properties. modelling the roothub as separate device and not nesting the
> other devices on the bus below the roothub allows us to keep the
> properties, for example the PHYs, separated).
>
> Signed-off-by: Martin Blumenstingl <martin.blumensti...@googlemail.com>
> ---
> Documentation/devicetree/bindings/usb/usb-xhci.txt | 23
> ++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt
> b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> index 5b49ba9f2f9a..20e5ce2b016a 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> @@ -42,4 +42,27 @@ Example:
> compatible = "generic-xhci";
> reg = <0xf0931000 0x8c8>;
> interrupts = <0x0 0x4e 0x0>;
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* see usb-roothub.txt */
> + roothub@0 {
> + compatible = "usb1d6b,3", "usb1d6b,2";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0>;
> +
> + port@1 {
> + reg = <1>;
> + phys = <&usb2_phy1>, <&usb3_phy1>;
> + phy-names = "usb2-phy", "usb3-phy";
> + };
> + };
> +
> + /* see usb-device.txt */
> + hub: genesys@1 {
What do the 0 and 1 addresses correspond to?
> + compatible = "usb5e3,608";
> + reg = <1>;
> + };
> };
> --
> 2.14.2
>
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