sample_embedding_folder2/0758118.txt

Ticket Name: RTOS/TDA2: Core clock initialization

Query Text:
Part Number: TDA2 Tool/software: TI-RTOS Hi, In VSDK3.3 example program "apps", I can not find clock initialization. In BIOS configuration script BIOS.cpuFreq is set to 750MHz, and in the C files I can only find program reads this configuration(by call BIOS_getCpuFreq), but program setting PRCM registers can not be found. So how is each core clock initialized? Thanks&regards.

Responses:
Hi Yang, PRCM is configured by SBL using PM HAL library APIs. You need to see PROCESSOR_SDK_VISION_03_03_00_00\ti_components\drivers\pdk_01_09_00_17\packages\ti\boot\sbl_auto\sbl_app\src\tda2xx\sbl_tda2xx_main.c and see DPLL calls. Regards, Rishabh

Hi Rishabh, OK. So BIOS.cpuFreq in BIOS configuration script is only used to tell OS that the core clock frequency configured by SBL, am I right?

Hi Yang, BIOS.cpuFreq in BIOS configuration script is used to tell the particular CPU's frequency to the OS. It can be configured by anyone, in this case it is configured by SBL. Regards, Rishabh

Hi Rishabh, OK. Thank you!

Hi Yang, I am closing the thread as issue has been resolved. Regards, Rishabh