From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Fri, 22 Apr 2016 12:33:57 +0200 Subject: [U-Boot] EHCI timed out on TD - token=0x80008d80 In-Reply-To: <1555768171.412166.1461309598662.JavaMail.zimbra@tes-dst.com> References: <1738814240.329401.1460963648953.JavaMail.zimbra@tes-dst.com> <2076596037.376812.1461148385619.JavaMail.zimbra@tes-dst.com> <251493112.390019.1461217743392.JavaMail.zimbra@tes-dst.com> <1123243920.390742.1461219949002.JavaMail.zimbra@tes-dst.com> <5718A818.40302@denx.de> <1555768171.412166.1461309598662.JavaMail.zimbra@tes-dst.com> Message-ID: <5719FE15.4020900@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 04/22/2016 09:19 AM, Manjunath wrote: > Hello Marek, > > I checked with mainline uboot as well. The issue is now clearer. Here are some info: > > 1. The board uses SMARC module > 2. Whenever reboot command is given the usb is detected correctly. > 3. When i give a hard reset, the following log is seen. > > U-Boot > usb start > (Re)start USB... > USB0: USB EHCI 1.00 > scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80 > 1 USB Device(s) found > scanning usb for storage devices... 0 Storage Device(s) found > > 4. Again i boot and do a soft reboot, the same USB is detected. > > This is definitely something related to power. > > > This is something mysterious for me. Anybody has any clue please let me know. Try setenv usb_pgood_delay 10000 , increases delay after enabling port power. Best regards, Marek Vasut