On Sat, Mar 26, 2016 at 11:32 PM, Ruslan Bilovol <ruslan.bilovol@xxxxxxxxx> wrote: > Hi > > On Fri, Mar 25, 2016 at 11:09 PM, Pavel Machek <pavel@xxxxxx> wrote: >> Hi! >> >>> OK, so at last I finished charging of my N900; found 1.8V USB >>> to UART adapter and soldered it to the phone. >>> >>> I managed to boot N900 with working USB gadget (builtin g_ether) >>> in boardfile mode, can ping it from PC and transfer data. I don't >>> see any issue (except of musb name issue in twl phy driver, I've >>> already sent a fix for that: https://lkml.org/lkml/2016/3/24/670 ) >>> >>> Pavel, I still don't see how you've got your issue, please share >>> more detials >> >> Ok, let me try. I undid all the changes in drivers/phy drivers/usb and >> include/linux/usb . I have all the gadget stuff built-in, so that I >> could use nfsroot, but this is boot from mmcblk. > > So do you mean you use original rootfs that was shipeed with N900? > >> >> gzipped config is attached. > > Thanks, I'll try that > >> >> PC is unable to work with the gadget: >> >> [256526.716099] usb 2-1: new full-speed USB device number 52 using >> uhci_hcd >> [256526.832091] usb 2-1: device descriptor read/64, error -32 >> [256527.052095] usb 2-1: device descriptor read/64, error -32 >> [256527.268160] usb 2-1: new full-speed USB device number 53 using >> uhci_hcd >> [256527.388121] usb 2-1: device descriptor read/64, error -32 >> [256527.608116] usb 2-1: device descriptor read/64, error -32 >> [256527.824170] usb 2-1: new full-speed USB device number 54 using >> uhci_hcd >> [256527.851175] usb 2-1: device descriptor read/8, error -32 >> [256527.975175] usb 2-1: device descriptor read/8, error -32 >> [256528.188133] usb 2-1: new full-speed USB device number 55 using >> uhci_hcd >> [256528.218184] usb 2-1: device descriptor read/8, error -32 >> [256528.343183] usb 2-1: device descriptor read/8, error -32 >> [256528.444314] usb usb2-port1: unable to enumerate USB device >> >> Dmesg from the n900 is attached as /tmp/delme.gz. I did _not_ apply >> the patch from https://lkml.org/lkml/2016/3/24/670 , yet, as I'm using >> devicetree boot. > > Hmm.. don't see anything strange in the boot log related to USB, > I'll try your config After looking into your config and boot log again, I see you use kernel 4.4, whereas the patch you've told about ("usb: gadget: bind UDC by name passed via usb_gadget_driver structure") was merged only into 4.5 kernel. Could you please try vanilla v4.5 with your config and see if it helps? Best regards, Ruslan Bilovol -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
