Re: [PATCH v3 015/105] drm/vc4: hvs: Boost the core clock during modeset

2020-06-03 Thread Maxime Ripard
Hi Eric, On Wed, May 27, 2020 at 09:33:44AM -0700, Eric Anholt wrote: > On Wed, May 27, 2020 at 8:49 AM Maxime Ripard wrote: > > > > 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. > > Like, the whole system

Re: [PATCH v3 015/105] drm/vc4: hvs: Boost the core clock during modeset

2020-06-02 Thread Eric Anholt
On Tue, Jun 2, 2020 at 5:52 AM Maxime Ripard wrote: > > Hi Eric, > > On Wed, May 27, 2020 at 09:33:44AM -0700, Eric Anholt wrote: > > On Wed, May 27, 2020 at 8:49 AM Maxime Ripard wrote: > > > > > > In order to prevent timeouts and stalls in the pipeline, the core clock > > > needs to be maxed at

[PATCH v3 015/105] drm/vc4: hvs: Boost the core clock during modeset

2020-05-28 Thread Maxime Ripard
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 --- drivers/gpu/drm/vc4/vc4_drv.h | 2 ++ drivers/gpu/drm/vc4/vc4_hvs.c | 9 + drivers/gpu/drm/vc4/vc4_kms.c | 7 +++ 3

Re: [PATCH v3 015/105] drm/vc4: hvs: Boost the core clock during modeset

2020-05-27 Thread Eric Anholt
On Wed, May 27, 2020 at 8:49 AM Maxime Ripard wrote: > > 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. Like, the whole system's core clock? How is it reasonable for some device driver to crank the system's c