The some 5200's have had a problem with a missing clock pulse on scl. The latest ppc tree plus Doman Puncer's i2c patch of a few days ago http://article.gmane.org/gmane.linux.ports.ppc.embedded/15718/match=i2c should fix the problem if that is it.
On 3/9/07, Matthias Fechner <[EMAIL PROTECTED]> wrote: > Hello John, > > * John Rigby <[EMAIL PROTECTED]> [07-03-07 14:17]: > > On a stock lite5200b the only thing that shows up is a serial > > eeprom at address 0x50. > > thx a lot, that tool helped me a lot. > I have written a very small c-program to access the I2C bus to read the > temperature of my MAX6633 and convert it to °C. > > That worked fine, but after reading the value some time, the I2C bus > is dead. The kernel says: > i2c_adapter i2c-1: ioctl, cmd=0x705, arg=0x7feaf8ec > i2c_adapter i2c-1: ioctl, cmd=0x706, arg=0x40 > i2c_adapter i2c-1: ioctl, cmd=0x720, arg=0x7feaf8f0 > i2c_adapter i2c-1: master_xfer[0] W, addr=0x40, len=1 > i2c_adapter i2c-1: master_xfer[1] R, addr=0x40, len=2 > I2C: timeout > > Is that maybe a bug in the I2C driver (i2c-mpc) or is my programm > faulty? > If it helps I can attach the programm. > > Best regards, > Matthias > > -- > > "Programming today is a race between software engineers striving to > build bigger and better idiot-proof programs, and the universe trying to > produce bigger and better idiots. So far, the universe is winning." -- > Rich Cook > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
