While running v2011.06-rc1, I noticed some new behavior on my OMAP3 i2c bus. I tracked it to commit 0e57968a215d1b, "I2C: OMAP: detect more devices when probing an i2c bus". It detects more devices indeed, such as some that don't even exist. Even better than that, it detects different devices every time. It looks like just false positives, the existent devices seem to always be found among the ghost devices.
Here's the behavior I see: -------------------------- # i2c probe Valid chip addresses: 05 18 30 49 50 51 5E 7A # i2c probe Valid chip addresses: 02 06 0B 18 1D 24 25 30 35 50 51 57 5D 6F 7C # i2c probe Valid chip addresses: 18 2E 30 33 35 50 51 62 6F # i2c probe Valid chip addresses: 18 1B 1F 2D 30 46 50 51 5C 5D # i2c probe Valid chip addresses: 0A 18 21 26 2B 30 32 50 51 60 66 69 6D 79 # i2c probe Valid chip addresses: 08 09 18 1B 30 50 51 5E 6C Here's what it looks like after reverting the commit: ------------------------------------------ # i2c probe Valid chip addresses: 18 30 50 51 # i2c probe Valid chip addresses: 18 30 50 51 # i2c probe Valid chip addresses: 18 30 50 51 # i2c probe Valid chip addresses: 18 30 50 51 -Michael MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
