From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Thu, 20 Aug 2015 17:03:58 +0200 Subject: [linux-sunxi] Re: [PATCH 4/6] ARM: dts: sun7i: Enable USB DRC on pcDuino 3 In-Reply-To: <55D58381.7040801@redhat.com> References: <1439563477-12295-1-git-send-email-hdegoede@redhat.com> <1439563477-12295-5-git-send-email-hdegoede@redhat.com> <20150820064545.GM30520@lukather> <55D58381.7040801@redhat.com> Message-ID: <20150820150358.GZ30520@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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: > >On Fri, Aug 14, 2015 at 04:44:35PM +0200, Hans de Goede wrote: > >>From: Jelle van der Waa > >> > >>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. > > >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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: