zynqmp: Make MMIO write FW call synchronous
Soren Brinkmann authored
We must guarantee that writes have become effective before returning to
the caller. Hence, wait for PMUFW signaling completion of the FW call
before returning to the rich OS.
Signed-off-by: default avatarSoren Brinkmann <soren.brinkmann@xilinx.com>
8787c0e0