[U-Boot] [PATCH v4 10/20] tegra: fdt: Add additional USB binding

Simon Glass sjg at chromium.org
Thu Jan 19 07:59:54 CET 2012


Hi Olof,

On Wed, Jan 18, 2012 at 10:41 PM, Olof Johansson <olof at lixom.net> wrote:
> Hi,
>
> On Wed, Jan 18, 2012 at 9:55 PM, Simon Glass <sjg at chromium.org> wrote:
>
>>> fsl-usb.txt uses "dr_mode" here, which might make sense to reuse given some of
>>> the shared IP in question for device mode:
>>>
>>>  - dr_mode : indicates the working mode for "fsl-usb2-dr" compatible
>>>   controllers.  Can be "host", "peripheral", or "otg".  Default to
>>>   "host" if not defined for backward compatibility.
>>
>> What does 'dr' mean?
>
> After some searching, it looks like it means "dual-role", which seems
> appropriate terminology for the tegra SoC as well.

Thanks for looking that up.

Well maybe, but it could mean data reverse mode or distinctive
ring...I like Stephen's nice device-tree-friendly naming and
explanation :-) Are we stuck with this?

Regards,
Simon

>
>
> -Olof


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