[U-Boot] PPC4XX Custom Board - Failing to read I2C

Rommel Custodio sessyargc at gmail.com
Fri Apr 5 00:18:41 CEST 2013


txcotrader <txcotrader <at> gmail.com> writes:

Dear txcotrader

> 
> By board is based off of the ppc460sx.
> I only have one I2C bus.
> 
> 2007 version has clock signal at 0x50 (DIMM0 I2C)
> 2013 version has no clock signal at 0x50 
> 
> My boardconfig.h file has the same values configured.

If you haven't tried it yet ...

One suggestion, try to manually set (with 'mw' or 'mm') the
registers of the your I2C controller then check the clock
signal. Changes in u-boot might have inadvertently caused
a different I2C base address to be used.

All the best,
Rommel



More information about the U-Boot mailing list