From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: usb: gadget breakage on N900: bind UDC by name passed via usb_gadget_driver structure
Date: Fri, 25 Mar 2016 22:09:44 +0100 [thread overview]
Message-ID: <20160325210944.GA26394@amd> (raw)
In-Reply-To: <CAB=otbQdpEtsXg2etX+3YYjrTfPYGtdKJo_V_rtfNb+VNV7g-w@mail.gmail.com>
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.
gzipped config is attached.
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.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2016-03-25 21:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-17 21:26 usb: gadget breakage on N900: bind UDC by name passed via usb_gadget_driver structure Pavel Machek
2016-03-18 7:47 ` Ruslan Bilovol
2016-03-18 9:32 ` Pavel Machek
2016-03-18 20:20 ` Pavel Machek
2016-03-21 11:51 ` Marek Szyprowski
2016-03-23 12:21 ` Pavel Machek
2016-03-24 0:45 ` Ruslan Bilovol
2016-03-25 3:21 ` Ruslan Bilovol
2016-03-25 21:09 ` Pavel Machek [this message]
2016-03-26 21:32 ` Ruslan Bilovol
2016-03-26 21:59 ` Ruslan Bilovol
2016-03-27 20:26 ` Pavel Machek
2016-03-27 21:44 ` Ruslan Bilovol
2016-03-28 21:33 ` Pavel Machek
2016-04-01 14:38 ` Pavel Machek
2016-03-25 21:15 ` Pavel Machek
2016-03-26 21:41 ` Ruslan Bilovol
2016-03-25 21:30 ` Pavel Machek
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