On 16 June 2015 at 21:56, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, Jun 16, 2015 at 09:18:05PM +0200, Rafał Miłecki wrote:
>> Right now xhci-plat-hcd can be built when using one of platform specific
>> drivers only (mvebu/rcar). There shouldn't be such limitation as some
>> platforms may not require any quirks and may want to just use a generic
>> driver ("generic-xhci" / "xhci-hcd").
>
> Don't you still need some kind of xhci platform driver? On its own,
> xhci-hcd doesn't provide what you need.
First, I can just "generic-xhci" if the controller doesn't need any
extra setup. See even the example in
Documentation/devicetree/bindings/usb/usb-xhci.txt, there is that:
compatible = "generic-xhci";
example entry for DT.
And about "xhci-hcd": if there appears (one day) some platform driver
(e.g. non-DT) registering "xhci-hcd" platform device, it'll most
likely handle initialization on its own, before calling the
platform_device_add.
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