TDA4VMXEVM: How to get/set A72 Linux frequency

Ming Zhong10

Part Number: TDA4VMXEVM

Dear expert,

I am helping customers on check current A72 frequency. We are using default PSDKLA 6.1.1.2.

Where is the code to set A72 frequency?

Thanks & Best Regards!

0 Brijesh Jadav over 5 years ago

Hi ZM,

DMSC firmware sets the core frequencies. I think the default is 2GHz.

Rgds,

Brijesh

0 Ming Zhong10 over 5 years ago in reply to Brijesh Jadav

Thanks Brijesh.

Is there any way to read the frequency, or set the frequency? Since TDA4VM is 1.8GHz.

0 Brijesh Jadav over 5 years ago in reply to Ming Zhong10

Hi ZM,

Typically this needs to be done using SciClient. Any particular frequency for A72 that you are looking for?

Rgds,

Brijesh

0 Srirama Govindarajan over 5 years ago in reply to Brijesh Jadav

Linux kernel does not provide an interface for setting or reading A72 frequency

The A72 frequency is set by the bootloader(running on R5f core) that bootstraps software on A72

For reading A72 frequency, we have a helper utility (this is still work in progress) that can be used - https://git.ti.com/cgit/k3conf/k3conf/tree/README.md

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