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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BY5PR02MB6772.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ecae2889-0d84-4f45-4354-08d84e49b06c X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Sep 2020 07:36:07.0527 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 8H5hDsRnEnEMHbzVu/CgWwWoOsQRy39vqgglz3o8PSv943X++j0WkaLnPcWPT/M8klbnavu0SvBJ0DCLYlKrQw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR02MB4325 Received-SPF: pass client-ip=40.107.94.51; envelope-from=saipava@xilinx.com; helo=NAM10-MW2-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/01 03:36:08 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Francisco Eduardo Iglesias , Peter Maydell , Eduardo Habkost , Vikram Garhwal , Markus Armbruster , "qemu-devel@nongnu.org" , Edgar Iglesias , Alistair Francis , =?iso-8859-1?Q?=27Marc-Andr=E9_Lureau=27?= , Ying Fang , Paolo Bonzini , Paul Zimmerman , =?iso-8859-1?Q?=27Philippe_Mathieu-Daud=E9=27?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Gred, > -----Original Message----- > From: Gerd Hoffmann > Sent: Monday, August 31, 2020 12:33 PM > To: Sai Pavan Boddu > Cc: Peter Maydell ; Markus Armbruster > ; 'Marc-Andr=E9 Lureau' > ; Paolo Bonzini ; > Edgar Iglesias ; Francisco Eduardo Iglesias > ; qemu-devel@nongnu.org; Alistair Francis > ; Eduardo Habkost ; > Ying Fang ; 'Philippe Mathieu-Daud=E9' > ; Vikram Garhwal ; Paul > Zimmerman > Subject: Re: [PATCH v4 5/7] misc: Add versal-usb2-regs module >=20 > On Sat, Aug 29, 2020 at 12:49:38AM +0530, Sai Pavan Boddu wrote: > > This is a dummy module to emulate control registers of versal usb2 > > controller. >=20 > --verbose please. xhci supports all usb speeds, including usb2. [Sai Pavan Boddu] This module is has soc specific control/status register t= o control the phy-reset, adjust frame length time and coherency properties= for the transactions. >=20 > So why this hardware is here, what does it on a real device and what is t= he > emulation doing? "dummy" sounds like it does just enough to make the > guest driver happy, probably pretending nothing is connected? Yes, this is added to make guest happy. I will the commit message with more info Regards, Sai Pavan >=20 > thanks, > Gerd