We are using SBCs with the PPC5020 onboard. In the P5020RM I have been read about a feature of that processor that allow you to change the clk frequencies via software. While I have found a number of documents touting this feature I have not been able to uncover any documents explaining how to implement it. From what I understand I should be able to program the CC1 and CC2 PLLs and select their use for 2 the cores and also setup a divisor 1,2,4 to that clock on each core. I have seen how you can setup these values in the reset control word but I am interested on how to change these settings once the board has booted. All of my internet searching has turned up nothing please help and point me a documentation or examples that explain this feature.