tree 37d9a42c4eab7a9d070d097bfb1fdb96de647eb1
parent 68116ef3381280e84f6006c2d388756f3332a750
author Jolly Shah <jollys@xilinx.com> 1546462006 -0800
committer Jolly Shah <jollys@xilinx.com> 1546630898 -0800

zynqmp: pm: Buffer the PLL mode that is set using IOCTL API

When linux calls pm_ioctl_set_pll_frac_mode() it doesn't expect the
fractional mode to be changed in hardware. Furthermore, even before this
patch setting the mode which is done by writing into register takes
no effect until the PLL reset is deasserted, i.e. until linux "enables"
the PLL. To adjust the code to system-level PLL EEMI API and avoid
unnecessary IPIs that would otherwise be issued, we buffer the mode
value set via IOCTL until the PLL mode really needs to be set.

Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>
Acked-by: Will Wong <WILLW@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>