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Mon, 20 Dec 2021 05:37:25 +0000 Date: Mon, 20 Dec 2021 05:37:19 +0000 (UTC) From: mahesh mv To: "u-boot@lists.denx.de" Message-ID: <321889095.1287351.1639978639867@mail.yahoo.com> Subject: USB device enumeration query MIME-Version: 1.0 References: <321889095.1287351.1639978639867.ref@mail.yahoo.com> X-Mailer: WebService/1.1.19415 YMailNorrin X-Mailman-Approved-At: Mon, 20 Dec 2021 13:54:44 +0100 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.38 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.38 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean Hi all, We have=C2=A0 a board where we plan to connect 2 USB devices of MASS storag= e class. One of the devices (3) is plugged in all the timebut the other USB= is hotplugged when ever its required. The issue we are facing is the devic= e number is not deterministic acrossreboots with uboot 2021 . Is there a wa= y to fix the Device 3 below as the first one all the time in DTS file or so= me other mechanism in uboot. Emerald:> versionU-Boot 2021.07--11625-ge998855ac2-dirty (Dec 07 2021 - 23:= 22:27 +0530) aarch64-broadcom-linux-gnu-gcc.br_real (Buildroot 2019.08) 8.3.0GNU ld (GNU= Binutils) 2.31.1 =C2=A0Emerald:> usb info=C2=A0 =C2=A0 =C2=A01: Hub,=C2=A0 USB Revision 3.0= =C2=A0 =C2=A0 =C2=A0- U-Boot XHCI Host Controller=C2=A0 =C2=A0 =C2=A0- Clas= s: Hub=C2=A0 =C2=A0 =C2=A0- PacketSize: 512=C2=A0 Configurations: 1=C2=A0 = =C2=A0 =C2=A0- Vendor: 0x0000=C2=A0 Product 0x0000 Version 1.0=C2=A0 =C2=A0= =C2=A0 =C2=A0 Configuration: 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 - Interfaces: 1 = Self Powered 0mA=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Interface: 0=C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 - Alternate Setting 0, Endpoints: 1=C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 - Class Hub=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Endpoi= nt 1 In Interrupt MaxPacket 8 Interval 255ms=C2=A0 =C2=A0=C2=A0=C2=A0 =C2= =A0 =C2=A02: Hub,=C2=A0 USB Revision 2.0=C2=A0 =C2=A0 =C2=A0-=C2=A0 USB2.0 = Hub=C2=A0 =C2=A0 =C2=A0- Class: Hub=C2=A0 =C2=A0 =C2=A0- PacketSize: 64=C2= =A0 Configurations: 1=C2=A0 =C2=A0 =C2=A0- Vendor: 0x05e3=C2=A0 Product 0x0= 608 Version 96.112=C2=A0 =C2=A0 =C2=A0 =C2=A0 Configuration: 1=C2=A0 =C2=A0= =C2=A0 =C2=A0 - Interfaces: 1 Self Powered Remote Wakeup 100mA=C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 Interface: 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - A= lternate Setting 0, Endpoints: 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Class = Hub=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Endpoint 1 In Interrupt MaxPacket 1= Interval 12ms=C2=A0 =C2=A0=C2=A0=C2=A0 =C2=A0 =C2=A03: Mass Storage,=C2=A0= USB Revision 2.10=C2=A0 =C2=A0 =C2=A0- SanDisk Ultra 040122c9e4a887e576fc7= d3a05f5898=C2=A0 =C2=A0 =C2=A0- Class: (from Interface) Mass Storage=C2=A0 = =C2=A0 =C2=A0- PacketSize: 64=C2=A0 Configurations: 1=C2=A0 =C2=A0 =C2=A0- = Vendor: 0x0781=C2=A0 Product 0x5581 Version 1.0=C2=A0 =C2=A0 =C2=A0 =C2=A0 = Configuration: 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 - Interfaces: 1 Bus Powered 224= mA=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Interface: 0=C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 - Alternate Setting 0, Endpoints: 2=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 - Class Mass Storage, Transp. SCSI, Bulk only=C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 - Endpoint 1 In Bulk MaxPacket 512=C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 - Endpoint 2 Out Bulk MaxPacket 512=C2=A0 =C2=A0=C2=A0=C2=A0 =C2=A0= =C2=A04: Mass Storage,=C2=A0 USB Revision 2.0=C2=A0 =C2=A0 =C2=A0- Virtium= VTDU31XC008G-A901 P1T65005607903260051=C2=A0 =C2=A0 =C2=A0- Class: (from I= nterface) Mass Storage=C2=A0 =C2=A0 =C2=A0- PacketSize: 64=C2=A0 Configurat= ions: 1=C2=A0 =C2=A0 =C2=A0- Vendor: 0x2aaa=C2=A0 Product 0x0100 Version 1.= 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 Configuration: 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 - = Interfaces: 1 Bus Powered 100mA=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Interface= : 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Alternate Setting 0, Endpoints: 2= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Class Mass Storage, Transp. SCSI, Bulk= only=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Endpoint 1 In Bulk MaxPacket 512= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 - Endpoint 1 Out Bulk MaxPacket 512 Thanks,Mahesh