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DSP on AM5728

Sriram V

Intellectual 955 points

Other Parts Discussed in Thread: AM5728

Hi,

How can i reduce the DSP speed/clock on a AM5728? Can i do this without changing the frequency of ARM core (which can be achieved by

setting the cpufreq to a lower value using cpufreq sysfs)

Thanks.

over 9 years ago

0 Piyali Goswami over 9 years ago

TI__Mastermind 30245 points

Hi Sriram,

From a AM57 hardware perspective the DSP frequency is provided from an independent PLL than the ARM. So changing the frequency of DSP is possible by programming the DSP_PLL independently than the MPU_PLL (ARM PLL). The Linux experts on the forum can help you out with the exact software changes required.

Hope this helps.

Regards,
Piyali

0 Alex Bashkov over 9 years ago

TI__Genius 14080 points

Hi Sriram,

On top of that, I advertise using the Clock Tree Tool (CTT)

for a precise visual representation how to alter PLL clock configuration within the device.

Thanks,

Alex

0 Pavel Botev over 9 years ago

TI__Guru**** 170625 points

Sriram,

You can try also with the clock framework:
processors.wiki.ti.com/.../Clock_Framework_User_Guide

Regards,
Pavel

0 Mariya Petkova over 9 years ago in reply to Pavel Botev

TI__Expert 4885 points

Hi, Sriram,

If you have any further follow-up issues, please, state them otherwise the thread will be closed in 2 days.

Regards,
Mariya