[U-Boot-Users] I2C @ MPC8343

[Andre Schwarz]

All,

in my current system the I2C bus is not working properly on a MPC8343 in 
u-boot v1.3.2.

i2c board config includes :

#define CONFIG_HARD_I2C
#undef CONFIG_SOFT_I2C
#define CONFIG_FSL_I2C
#define CONFIG_I2C_MULTI_BUS
#define CONFIG_I2C_CMD_TREE
#define CFG_I2C_OFFSET          0x3000
#define CFG_I2C2_OFFSET         0x3100
#define CFG_I2C_SPEED           100000
#define CFG_I2C_SLAVE           0x7F


chip probing works fine.

mvBL-M7> i2c probe
Valid chip addresses: 30 48 50 68

reading the Chips gives all "ff"

mvBL-M7> i2c md 50 0 10
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff    ................


Observing the I2C bus wires show that everything _works excellent_ :
100kHz speed as well as all data seems ok - but u-boot shows "ff".

BTW:  Fetching HRCW from I2C is also working fine.

After some tries (i2c md ..) the bus hangs and no more transactions can 
be seen on the bus.


regards,
Andre Schwarz
Matrix Vision


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