Improve stability USB memory sticks for the common OHCI USB layer.
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- v1 Latest3 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | Fix for USB sticks not working on ARM while using GCC 4.x compilers | +0 | 0 replies | |
| 2/3 | Refactoring parts of the common USB OHCI code | +0 | 0 replies | |
| 3/3 | USB layer of U-Boot causes USB protocol errors while using USB memory sticks | +0 | 0 replies |
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Cover letter [U-Boot] [patch 0/3] Improve stability USB memory sticks for the common OHCI USB layer.
This series is a set of patches that are required to make USB sticks behave robust while using U-Boot on a OHCI host.
Several users complain about ERROR: CTL:TIMEOUT errors while using USB sticks, and while testing many different USB sticks it showed that some were working and many don't. It even showed a compiler dependency while debugging this, where GCC 3.x compilers seemed to work (but not always) and GCC 4.x compilers usually don't. While debugging this (with a USB analyser of course) it turned out that U-boot also made several protocol violations that needed to be solved, these resulted in hanging USB devices and so on.
In a mail thread with Stelian Pop on 28 July it was reported of a known error on Atmel cores that it did not work.
I tested these series on Atmel AT91SAM9261 Core, with the common OHCI driver, GCC 4.2.3 (Code Sourcery G++ Lite 2008q1-126)
REMEMBER: U-boot still supports 1 single USB stick at a time...