From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: [RFC 0/2] Enable USB support for Venice2 Date: Tue, 25 Feb 2014 15:23:34 -0700 Message-ID: <530D17E6.2000905@wwwdotorg.org> References: <1393364160-28253-1-git-send-email-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1393364160-28253-1-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Thierry Reding Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org On 02/25/2014 02:35 PM, Thierry Reding wrote: > From: Thierry Reding > > Hi, > > These two patches add the USB controllers to Tegra124 and enable them on > Venice2, wiring them up with the corresponding regulators. > > Unfortunately the USB1 VBUS regulator seems to be causing problems once > enabled, causing none of the USB ports to work properly. Commenting out > the gpio property for that regulator fixes things for me and I can use > the webcam connected to USB2 as well as any of the peripherals on USB3. > > Since GPIO N.04 isn't connected to anything else, I don't understand how > it could possibly influence any of the other USB busses. I wonder if > perhaps this is caused by defect hardware, so it would be good if > somebody could test this on a different Venice2. I see the same behaviour as you.