AM6548: Frequency change

Joey Fang

Intellectual 295 points

Part Number: AM6548

Hi,

I am trying to change frequency on AM65x industrial development kit with Linux SDK.

As below e2e post described, Linux SDK 6.0 does not support power management options on AM65x.

https://e2e.ti.com/support/processors/f/791/t/834805?PROCESSOR-SDK-AM65X-Frequency-change-not-working

I wonder if power management options already be supported in PROCESSOR-SDK-LINUX-RT-AM65X 06_02_00_81?

If yes, would you tell me how to change frequency?

Thanks

over 5 years ago

0 Nick Saulnier over 5 years ago

TI__Guru** 101960 points

Hello there,

Let me take a look at this. I'll get back to you next week.

Regards,

Nick

0 Nick Saulnier over 5 years ago

TI__Guru** 101960 points

Hello,

I apologize for the long delay. I have attached some sample code to change the OPP frequency in uboot (e.g., from 800MHz to 1GHz or 1.1GHz). Note that as of SDK 6.2, the software team has only run tests at 800MHz. I do not expect to see software errors at higher core frequencies, but we have not tested to make sure.

Regards,

Nick

am654-Bump-up-MPU-speed-to-1GHz.zip

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AM6548: Frequency change