I'm using the mailbox interface of the RPI (https://github.com/raspberrypi/firmware ... -interface) in a bare metal app to change frequency settings of arm/core/ram but none of them seems to make the processing faster or slower.
Asking the mailbox for the current frequency returns the right values after I set them.
I wanted to do that since the default frequency reported by a mailbox call is 600Mhz for the ARM core and something like 250Mhz for the SDRAM... I read about topics saying that the CPU is in low-power state by default for bare metal apps. But no matter if I set 1.4Ghz or 100Mhz it seems to have no effect at all. (RPI 3B+)
Am i doing something wrong ?