[U-Boot] [PATCH] powerpc/85xx: Add basic support for P1010RDB

[Wolfgang Denk]

Dear Kumar Gala,

In message <2CF0740E-8067-456C-B3AA-1D8CE3A76665 at kernel.crashing.org> you wrote:
> 
> > This loop is similar to what nand_spl/nand_boot.c is using.  It's ugly, but
> > the goal here is small code rather than cleanliness.  Is the timebase
> > running at this point?  How much code is required to get the timebase
> > frequency?
> 
> TB isn't running so you have to turn it on in the SoC (so a few CCSRBAR read/writes), than you have to calculate freq on some boards its a #define constant, on other its calculated reading I2C which would add a bunch of code for accessing I2C.  I'm pret
> ty sure we aren't going to be able to do that in 4k.

No matter what exactly you do, the loop we have now cannot be used as
it is completley dependent on the tool chain if there is any delay at
all, and it's pretty much nondeterministic how long it will be using
different tool chains.

This code is simply broken and needs fixing.

Best regards,

Wolfgang Denk

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