Hi Dilip, My previous response still stands:
"I had this when moving from DM355 EVM to our custom board. I don't know if it would be the same kind of issue on DM6446.. On ours, the problem was that the VPFE driver has support for the TVP5146 deoder written into it, it failed to communicate with that chip over I2C and failed to finish loading. I went in with a machette and cut all the TVP5146 stuff out and it works now." All the I2C NACK messages mean drivers are trying to talk to a device on I2C that is no longer there on your new board. If this is breaking video, it is probably video hardware. On the DM355 EVM this is the TVP5146 decoder, maybe something else on your EVM. You need to find out what is trying to do this (it should be in the linux kernel directory/drivers/media/video) and change it for your hardware. Try doing something like "grep i2c *.c" in that directory for a starting point. You can also try the age old technique of putting printk messages throughout the driver to help you work out where it is failing. If there are dev_dbg() messages already through that source code, or similar debug messages, work out what switches you need to turn them on and they might help you. Or just re-#define them as printk() at the top of the file, as a quick hack. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of dilip Sent: 03 July 2008 05:40 To: [email protected] Subject: Problem with opening /dev/video0 device Hi all, my problem is not still solved, if anyone knows about this problem, let me know. for more details abt my problem, see last messagge also in this mail. iam posting whole booting log down here with environment settings.plz check and suggest me. I had this when moving from DM355 EVM to our custom board. I don't know if it would be the same kind of issue on DM6446.. On ours, the problem was that the VPFE driver has support for the TVP5146 deoder written into it, it failed to communicate with that chip over I2C and failed to finish loading. I went in with a machette and cut all the TVP5146 stuff out and it works now. Racelogic is a limited company registered in England. Registered number 2743719 . Registered Office Unit 10, Swan Business Centre, Osier Way, Buckingham, Bucks, MK18 1TB . The information contained in this electronic mail transmission is intended by Racelogic Ltd for the use of the named individual or entity to which it is directed and may contain information that is confidential or privileged. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email so that the sender's address records can be corrected. The views expressed by the sender of this communication do not necessarily represent those of Racelogic Ltd. Please note that Racelogic reserves the right to monitor e-mail communications passing through its network _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
