ARM: imx6: gpc: Add PU power domain for GPU/VPU

Browse source

When generic pm domain support is enabled, the PGC can be used
to completely gate power to the PU power domain containing GPU3D,
GPU2D, and VPU cores.
This code triggers the PGC powerdown sequence to disable the GPU/VPU
isolation cells and gate power and then disables the PU regulator.
To reenable, the reverse powerup sequence is triggered after the PU
regulator is enabled again.
The GPU and VPU devices in the PU power domain temporarily need
to be clocked during powerup, so that the reset machinery can work.

[Avoid explicit regulator enabling in probe, unless !PM]
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

...

This commit is contained in:

Philipp Zabel 2015-02-23 18:40:12 +01:00 • committed by Shawn Guo

parent 58e4a668be

commit 00eb60a8b4

2 changed files with 214 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

arch/arm/mach-imx/Kconfig

View file

213

arch/arm/mach-imx/gpc.c

View file