[linux-sunxi] Re: [PATCH 4/6] ARM: dts: sun7i: Enable USB DRC on pcDuino 3

On Thu, Aug 20, 2015 at 09:36:33AM +0200, Hans de Goede wrote:

Hi,

On 08/20/2015 08:45 AM, Maxime Ripard wrote:

quoted

On Fri, Aug 14, 2015 at 04:44:35PM +0200, Hans de Goede wrote:

quoted

From: Jelle van der Waa <redacted>

Enable the otg/drc usb controller on the pcDuino 3.

Note this board has the otg-vbus connected directly to the 5v-dcc of
the board, so there is no vbus0 regulator, nor vbus0-det.

Can it do OTG then?

Yes.

quoted

If VBUS is tied to the 5v, there's no way for the
board to shut it down when acting as peripheral, right?

Correct, the idea is to power it over otg when using it
as a peripheral, or at least power it from a usb port of
the machine for which it is a peripheral. Note that the
original cubieboard (both A10 and A20 versions) have the
same issue.

Hmmm, I see. I'll queue your patch then.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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