diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2020-03-19 21:34:27 +0100 |
|---|---|---|
| committer | Qiang Yu <yuq825@gmail.com> | 2020-03-28 16:29:46 +0800 |
| commit | 1996970773a323533e1cc1b6b97f00a95d675f32 (patch) | |
| tree | 15843b481458a6369712db5b6351e45f72ebfde5 /drivers/gpu/drm/lima/Makefile | |
| parent | 6bb0942e8f46863a745489cce27efe5be2a3885e (diff) | |
drm/lima: Add optional devfreq and cooling device support
Most platforms with a Mali-400 or Mali-450 GPU also have support for
changing the GPU clock frequency. Add devfreq support so the GPU clock
rate is updated based on the actual GPU usage when the
"operating-points-v2" property is present in the board.dts.
The actual devfreq code is taken from panfrost_devfreq.c and modified so
it matches what the lima hardware needs:
- a call to dev_pm_opp_set_clkname() during initialization because there
are two clocks on Mali-4x0 IPs. "core" is the one that actually clocks
the GPU so we need to control it using devfreq.
- locking when reading or writing the devfreq statistics because (unlike
than panfrost) we have multiple PP and GP IRQs which may finish jobs
concurrently.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200319203427.2259891-3-martin.blumenstingl@googlemail.com
Diffstat (limited to 'drivers/gpu/drm/lima/Makefile')
| -rw-r--r-- | drivers/gpu/drm/lima/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/lima/Makefile b/drivers/gpu/drm/lima/Makefile index 6e7b788408e8..ca2097b8e1ad 100644 --- a/drivers/gpu/drm/lima/Makefile +++ b/drivers/gpu/drm/lima/Makefile @@ -15,6 +15,7 @@ lima-y := \ lima_ctx.o \ lima_dlbu.o \ lima_bcast.o \ - lima_trace.o + lima_trace.o \ + lima_devfreq.o obj-$(CONFIG_DRM_LIMA) += lima.o |