On Sun, Jun 30, 2019 at 9:02 AM Rob Clark <robdclark@xxxxxxxxx> wrote: > > From: Rob Clark <robdclark@xxxxxxxxxxxx> > > The goal here is to support inheriting a display setup by bootloader, > although there may also be some non-display related use-cases. > > Rough idea is to add a flag for clks and power domains that might > already be enabled when kernel starts, and which should not be > disabled at late_initcall if the kernel thinks they are "unused". > > If bootloader is enabling display, and kernel is using efifb before > real display driver is loaded (potentially from kernel module after > userspace starts, in a typical distro kernel), we don't want to kill > the clocks and power domains that are used by the display before > userspace starts. > > Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx> Seems sane to me. I'm curious what Stephen Boyd thinks. I'll try to give it a spin on one of the 835 laptops. Reviewed-by: Jeffrey Hugo <jeffrey.l.hugo@xxxxxxxxx>
