spi clock

* spi clock
       [not found] <000001c74939$32fdb600$98f92200$@lu@serialsys.com.hk>
@ 2007-02-12 14:22 ` zil iram
  2007-02-13  4:41 ` about OSK5912 Flash Recovery Utility Hiroki Kaminaga
  1 sibling, 0 replies; 5+ messages in thread
From: zil iram @ 2007-02-12 14:22 UTC (permalink / raw)
  To: linux-omap-open-source

Hi,
I am developing an SPI Controller driver based on the microwire controller 
in linux2.6.17 for omap.
I used the armxor clock for my spi clock just like the microwire driver. 
However, I am having trouble with setting the frequency for my clock. I am 
looking at the serial document for omap and have been looking at the 
registers for the SPI Master/Slave controller but there is no register where 
I can set the clock's frequency unlike that of the uwire. In the kernel, I 
changed the rate in clk_ref which is the parent of armxor clock from 
12000000 to 500000 just to see if I can set the clock rate but as I probed 
the spi clock pin with the logic analyzer, the clock was still 12000000. I 
just followed the code in the microwire driver to get the clock -- clk_get 
and assigned it to my spi_clock and then enabled the clock in the spi 
register. I could send data through my driver but I just could not set the 
clock frequency to the desired value.

Please help me.

Thanks,
Lizette

_________________________________________________________________
FREE pop-up blocking with the new MSN Toolbar - get it now! 
http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/

^ permalink raw reply	[flat|nested] 5+ messages in thread