How can change the CPU speed? [AM387x / DM814x]

Hi René,

This post has a step by step instructions on how to change the processor speed to 1GHz for the DM814x:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/204555.aspx

Here is a wiki page that talks about changing frequency during operation:

http://processors.wiki.ti.com/index.php/TI81XX_PSP_PM_DVFS_User_Guide#Frequency_Scaling

Regards,

Hello,

thank you for the reply, but I have a question to your post.

Does it work also for WEC7 (windows embedded compact 7)?

I think, I post my question in the WinCE-Forum and I can not make changes in a uboot.

But I find the define in another file under this path: C:\WINCE700\platform\AM387X_BSP\SRC\BOOTLOADER\XLDR\platform.c

#define MODENA_M   0x64 //0x3C

This part of the modification seems to be the same as under linux.

What will be the next step? And I have a small extension to my first question:

Is it possible to change the processor speed to 800MHz? The define is no problem, I think #define MODENA_M   0x50 // for 800MHz.

Please consider this extension in your next reply.

Best regards,

René

Hi Rene,

Yes it should work in the same manner in winCE.  There are also similar defines with in the OMAP35XX part of the BSP, I would use those as an example for your changes in the AM387X BSP.

Regards,