Accessing of RCC_XBARxCFGR register in STM32Mp257F-Dk Board

[Aks]

Dear Sir/Mam

We are encountering an issue with writing values into channels 0–7 of the RCC_XBARxCFGR register at the address offset 0x1018 + 0x4 * x (where x = 0 to 63).We have also observed that Writing to other channels (x = 8 to 63) works as expected and Attempts to write into RCC_XBARxCFGR(0 to 7) result in the debug control exiting and generating an error.

Thanks & Regards

Akshitha Pattem

[Zakaria1]

Hello @Aks,

Can you provide more details about exactly what you are trying to write to these registers?

BRs,
Zakaria

[PatrickF]

hi @Aks ,

did you follow sequence as written in RM0457 "Flexclkgen programming flow" ?

Otherwise, you are likely stopping of fooling some of critical bus clocks.

Regards.

[Aks]

Dear @PatrickF 

@Zakaria1

We are following the flow mentioned in the Flexclkgen programming flow.But we could not use PLL4 FOUTPOSTDIV as input for channels 0–7 of the RCC_XBARxCFGR register.

Thanks & Regards

Akshitha Pattem