On Fri, Nov 4, 2011 at 4:25 AM, Pavan Kondeti <pkondeti@xxxxxxxxxxxxxx> wrote:
> Hi
>
> I am working on adding USB device tree support for MSM platform. One of
> our chip set has 2 hsusb cores. The first core is configured as otg and
> the other core is configured in host only mode (EHCI compliant). Are the
> below device node names Okay? Please suggest.
>
> hsusb0-otg: usb@0xa6000000 {
> compatible = "qcom,hsusb-otg";
> ---
> };
>
> hsusb0-device: usb@0xa6000000 {
> compatible = "qcom,hsusb-device";
> ---
> };
>
> hsusb0-host: usb@0xa6000000 {
> compatible = "qcom,hsusb-host", "usb-ehci";
> ---
> };
>
> hsusb1-host: usb@0xa6000000 {
> compatible = "qcom,hsusb-host", "usb-ehci";
> ---
> };
>
> /* super speed support
>
> ssusb0-device: usb@0xa6000000 {
> compatible = "qcom,ssusb-device";
> };
The host controller node names as "usb@<adddr>" as you have here is
exactly right. The driver doesn't care and will only look at the
compatible list. OTG controllers can also use "usb@" as the prefix.
Controllers that are only in device mode should probably be called
something like "usb-gadget@<addr>" or similar, because "usb@" is used
for host controllers.
The label names (hsusb*-host, hsusb*-device) are completely irrelevant
since Linux never sees them. Use whatever you want for the label
names.
Also, the form of the node name is: "usb@a6000000" (without '0x' in
the address).
g.
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