The current dt entry for the ocm performance monitor specifies that there are 4 slots. This is incorrect. Page 372 of the zynqmp trm describes the number of slots each apm supports. Signed-off-by: Daniel Steger <daniel.steger@xilinx.com> Reviewed-by: Shubhrajyoti Datta <Shubhrajyoti.datta@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>