On Thu, Oct 14, 2021 at 9:56 AM Kinsey Moore <kinsey.mo...@oarcorp.com> wrote: > > On 10/14/2021 01:40, Chris Johns wrote: > > Hi, > > > > I have come across this define in zynqmp_slcr.h: > > > > #define ZYNQMP_DEFAULT_PS_CLK_FREQUENCY 33333333 > > > > What if the cpu freq is changed by a user? If this value still valid? > If CPU frequency scaling is used, I believe this value remains > unchanged. This is the base clock of the processing subsystem as a whole > which includes all hard peripherals. > > The CPU frequency is under the control system designer in these parts. > > That's correct, this frequency could theoretically be changed by using > different parts on the board, different dividers somewhere, or probably > even forcing the PL to somehow generate the clock. This clock value has > been the same for all 3 ZynqMP boards I have on hand.
If it can be changed by a user, should it be something that can be overridden by configuration? --joel > > > Kinsey > > _______________________________________________ > devel mailing list > devel@rtems.org > http://lists.rtems.org/mailman/listinfo/devel _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
