Re: change cpu_freq

["Juha Yrjölä" <juha.yrjola@solidboot.com>]

Martin Margraf wrote:

> my next question is, how can i read/write to the regs of the omap5912? 
> during using 2.4 kernel i was able to access the regs directly with a 
> module. but now with 2.6 kernel i get a segmentation fault. maybe 
> someone can help me?

Nowadays there isn't 1-to-1 mapping between physical and virtual I/O 
addresses.  If you're operating on a physical address, you can use the 
omap_{read,write} helper macros to access the registers.  Alternatively, 
you can convert the physical address to a virtual one first by io_p2v(), 
  after which the memory accesses can be done directly.

Cheers,
Juha