On Sunday 30 January 2005 10:58 pm, IGOR LURI wrote: > Dear Sir, > > We have a custom board based on PowerPC 823 with 16 Mbyte of RAM, ethernet, > USB host mode and direct PCMCIA - IDE iterface with a Compact Flash > running Linux kernel 2.4.4, downloaded from Denx site. > To have USB working in host mode, we have a external 48Mhz signal aplied in > PA7 (CLK1) pin and a external 1Khz signal in PC15 (DREQ0), both signals in > sync with 72 Mhz system clock. Also, we have installed the USB microcode > patch and because our USB tranceiver can "hear" it's own SOF being send, > we don't need TIMER2 interrupt, but we need TIMER2 to know the time left to > the following SOF.
Erm, OK. 2.4.4 is pretty ancient, and I don't think many folk here know about that or the Denx patches, or your hardware. You should probably ask Denx for support. > With thouse changes, it seems everything works correctly, becuse we can > manage files from a USB pendrive. But after mounting de pendrive, if we see > proc file system information "cat /proc/driver/usb" we can see that the > driver has had 238 transmision errors. What does it means? I suspect it was counting wrong, but you'd be better off asking someone who wrote or maintains that driver. (Denx?) The count looked suspicious; it reported 238 errors, and _also_ 238 NAKs. NAKs are not errors, they're just "try again later" responses. > The new 2.4.24 kernel has better USB support than 2.4.4? Certainly 2.4.24 has better USB support. It came out in January 2004, so I'd hardly call it "new"! If that's the most recent kernel available for your board, you should certainly try it. 2.6.10 would be best, but may not be an option for you. - Dave ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
