RTOS: TI-RTOS clock module frequency issue

Ahmed Wahdan

Intellectual 270 points

Tool/software: TI-RTOS

Hi All,

I have a question about the clock module frequency.

I work on 500 Mhz for IPU1_C0 core, the confg file has the BIOS.cpuFreq.lo = 200000000; and it works fine.

I don't understand what 200000000 came from.

I changed it to 500000000 but the timing was not correct.

What am I missing?

over 7 years ago

0 Rishabh Garg over 7 years ago

TI__Guru 55685 points

Hi,

Maximum frequency on which IPU can run is 212.8 MHz and not 500 MHz.
200000000 is 200 MHz.

Regards,
Rishabh

0 Ahmed Wahdan over 7 years ago in reply to Rishabh Garg

Intellectual 270 points

Up to SBL configuration the clock is 500 Mhz!

0 Rishabh Garg over 7 years ago in reply to Ahmed Wahdan

TI__Guru 55685 points

Hi,

How did you conclude that clock is 500 MHz for IPU upto SBL? The clock value is not changed for IPU and is always set as 212.8 MHz.

Regards,
Rishabh

0 Ahmed Wahdan over 7 years ago in reply to Rishabh Garg

Intellectual 270 points

I'm sorry, may be I made a mistake.
So the IPU clock is always 212.8 and we can't change it neither lower nor higher?

0 Alex Bashkov over 7 years ago in reply to Ahmed Wahdan

TI__Genius 13630 points

Hello,

The Data Manual states that the IPU maximum supported frequency is 212.8 MHz, so you should go over that.

thanks,
Alex

0 Rishabh Garg over 7 years ago in reply to Ahmed Wahdan

TI__Guru 55685 points

212.8 is OPP NOM frequency and OPP High/OD are not applicable to IPU .
I would suggest you not to change the clock.

Regards,
Rishabh

0 Rishabh Garg over 7 years ago in reply to Rishabh Garg

TI__Guru 55685 points

Hi,

We haven't heard back from you, I'm assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out).

Regards,
Rishabh

0 Ahmed Wahdan over 7 years ago in reply to Rishabh Garg

Intellectual 270 points

Sorry for my late reply.
The clock as all for the comments assured is 212.8 MHz
Thanks

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RTOS: TI-RTOS clock module frequency issue