diff options
| author | Maxime Ripard <maxime@cerno.tech> | 2020-09-03 10:00:35 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-09-07 18:01:52 +0200 |
| commit | d7d96c00e585ceef29783c6b94e6497c6bb2f452 (patch) | |
| tree | fe710845a0c8b400f88ae4d3208367ebbb4e89cc /drivers/gpu/drm/vc4/vc4_kms.c | |
| parent | c54619b0bfb35c4153b3fb34916a6fa50dcf2dc1 (diff) | |
drm/vc4: hvs: Boost the core clock during modeset
In order to prevent timeouts and stalls in the pipeline, the core clock
needs to be maxed at 500MHz during a modeset on the BCM2711.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/37ed9e0124c5cce005ddc8dafe821d8b0da036ff.1599120059.git-series.maxime@cerno.tech
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_kms.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_kms.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 08318e69061b..210cc2408087 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -11,6 +11,8 @@ * crtc, HDMI encoder). */ +#include <linux/clk.h> + #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> @@ -149,6 +151,7 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_hvs *hvs = vc4->hvs; struct vc4_crtc *vc4_crtc; int i; @@ -160,6 +163,9 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state) vc4_hvs_mask_underrun(dev, vc4_crtc->channel); } + if (vc4->hvs->hvs5) + clk_set_min_rate(hvs->core_clk, 500000000); + drm_atomic_helper_wait_for_fences(dev, state, false); drm_atomic_helper_wait_for_dependencies(state); @@ -182,6 +188,9 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state) drm_atomic_helper_commit_cleanup_done(state); + if (vc4->hvs->hvs5) + clk_set_min_rate(hvs->core_clk, 0); + drm_atomic_state_put(state); up(&vc4->async_modeset); |