Bug 10187 - USB host mode does not work.
: USB host mode does not work.
Status: RESOLVED WONTFIX
Product: Core
Kernel
: 5.0/(3.2010.02-8)
: N900 Maemo
: Unspecified enhancement (vote)
: ---
Assigned To: unassigned
: linux-kernel-bugs
:
:
:
:
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Reported: 2010-05-17 03:54 UTC by Ian Stirling
Modified: 2010-05-17 17:21 UTC (History)
1 user (show)

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Description Ian Stirling (reporter) 2010-05-17 03:54:01 UTC
SOFTWARE VERSION:
(Settings > General > About product)

EXACT STEPS LEADING TO PROBLEM: 
(Explain in detail what you do (e.g. tap on OK) and what you see (e.g. message
Connection Failed appears))
1. Connect USB hub through appropriate adaptor to n900.
2. echo host > ./devices/platform/musb_hdrc/mode

EXPECTED OUTCOME:
Devices show up in lsusb, and work - with appropriate kernel modules install.
ACTUAL OUTCOME:
They don't.
REPRODUCIBILITY:
always

EXTRA SOFTWARE INSTALLED:

OTHER COMMENTS:
The hardware does in fact work somewhat in USB host mode.

http://talk.maemo.org/showpost.php?p=657866&postcount=860

This shows details of egoshin succeeding in mounting a USB stick.
Others have had success with DisplayLink adaptors, to connect an external
monitor, and USB hubs.

This mode is currently very flaky, as it relies on somehow prodding the
partially working OTG support into hostmode.

It does not switch the hardware into host mode, but relies on side-effects to
get it there.

It is also not in principle user friendly, as it relies on having an external
PC to plug it into, in order to setup the required conditions.

If Nokia cannot provide this - is there any way to provide documents helpful to
the members of the community interested in developing this - for example any
source code that may have been removed that was designed to support USB host,
access to the isp1707a datasheet?

Thanks.
Ian Stirling.

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.3)
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Comment 1 Andre Klapper maemo.org 2010-05-17 17:21:03 UTC
There are a few threads about this in talk.maemo.org and it was announced here:
http://lists.maemo.org/pipermail/maemo-developers/2009-September/020830.html

Nokia currently has no plans to support this, as far as I know.