Re: [PATCH 0/2 v2] Fix Exynos peach USB on kernels with USB Gadget support

[Sjoerd Simons <sjoerd.simons@collabora.co.uk>]

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On Wed, 2014-08-27 at 04:08 +0200, Andreas Färber wrote:
> Hi,
> 
> Am 26.08.2014 09:30, schrieb Sjoerd Simons:
> > I suspect other boards base using exynos5420/5800 might need the similar fixes
> > (Arndale Octa and Samsung SMDK5420) to their dts files, so would be great if
> > folks with those board could verify this.
> 
> usbdrd_dwc3_1 is indeed required for the Arndale Octa. Not sure about 0.
> 
> I tested my attaching a USB 3.0 disk - is there an easier way to tell?

That seems to be the easiest way to tell. In my testing when things
broke no USB host functionality would work, so USB 3 isn't a
requirement.  You can also build with USB_DWC3_DEBUG enabled and check
the mode file it generates in debugfs to see & set the controller mode
to see how it gets setup by default and change the mode without
rebuilding the dts.

From looking at the board on the arndaleboard wiki[0], it looks like it
has one USB 3 host (which i guess is usbdrd_dwc3_1?) and a USB 2 OTG
port which might be usbdrd_dwc3_0 (in which case the default setting for
otg is correct). 


0: http://www.arndaleboard.org/wiki/index.php/O_WiKi#Detail_of_Arndale_Board

-- 
Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Collabora Ltd.

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