On Thu, 10 Mar 2005, Rudolf Marek wrote: > Hello, > > Patrick please can you help with this? I can try. I checked the datasheet, and I'll relate what I know, though I'm definitely not an expert on i2c. Note that while not *identical*, the controller shares a lot of similarities with the i810 driver. i2c-0: Transaction (pre): STS=00, CNTL1=00, CNTL2=10, CMD=c1, ADD=58, DAT0=00, DAT1=00 i2c-0: Transaction (post): STS=44, CNTL1=00, CNTL2=10, CMD=c1, ADD=58, DAT0=00, DAT1=00 Mar 10 18:01:07 pi140001 kernel: i2c_adapter i2c-0: SMBus Error: Timeout Device Error Transaction Never Finished In SMB_HST_STS (offset 0), bit 6 is "ISUSE_STS", which reads a 0 the first time after the device is reset, then a 1 after that. Seems like it can be used to check if the deivce is ready to be used after a reset.. Bit 2 is 'DEV_ERR' which simply says that one of the following errors occured: - Illegal Command Field - Unclaimed command protocol - Host or device timeout - Master's NACK cycle being driven to ACK - Master's ACK being forced to NACK - Master's stop cycle being corrupted It says that it only happens at address 0x58. Is there a device there? If there is, perhaps you could try increasing the timeout? Does that help at all? Patrick
