From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dxAc9-0001ug-F6 for qemu-devel@nongnu.org; Wed, 27 Sep 2017 07:34:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dxAc6-0007uT-DM for qemu-devel@nongnu.org; Wed, 27 Sep 2017 07:34:53 -0400 Message-ID: <1506512087.25036.10.camel@redhat.com> From: Gerd Hoffmann Date: Wed, 27 Sep 2017 13:34:47 +0200 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] ppce500 usb-ehci-pci issue on last uboot List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: luigi burdo , "qemu-ppc@nongnu.org" , qemu-devel Hi, > "actually, I tried it yesterday and it seems to be a bug in qemu in > case you reset the EHCI controller, it doesn't come out of reset for > whatever reason ... so you probably want to talk to the qemu guys, > it's when U-Boot sets USBCMD RESET bit and then does handshake, the > controller is stuck with reset bit asserted" > > > i ask if possible to fix it? Nothing obvious in the ehci reset code. Needs someone debugging it ... Is this on a bigendian host? If so this could be endian bugs in the ehci emulation. You could also try xhci or ohci instead, these are known-working on bigendian hosts (used by ppc64 pseries). cheers, Gerd