Re: [PATCH v3 12/12] drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare

Hi Doug, On Wed, Apr 14, 2021 at 06:22:57PM -0700, Doug Anderson wrote: > On Wed, Apr 14, 2021 at 5:58 PM Laurent Pinchart wrote: > > On Fri, Apr 02, 2021 at 03:28:46PM -0700, Douglas Anderson wrote: > > > Unpreparing and re-preparing a panel can be a really heavy > > > operation. Panels

Re: [PATCH v3 12/12] drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare

Hi, On Wed, Apr 14, 2021 at 5:58 PM Laurent Pinchart wrote: > > Hi Doug, > > Thank you for the patch. > > On Fri, Apr 02, 2021 at 03:28:46PM -0700, Douglas Anderson wrote: > > Unpreparing and re-preparing a panel can be a really heavy > > operation. Panels datasheets often specify something on

Re: [PATCH v3 12/12] drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare

Hi Doug, Thank you for the patch. On Fri, Apr 02, 2021 at 03:28:46PM -0700, Douglas Anderson wrote: > Unpreparing and re-preparing a panel can be a really heavy > operation. Panels datasheets often specify something on the order of > 500ms as the delay you should insert after turning off the

[PATCH v3 12/12] drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare

Unpreparing and re-preparing a panel can be a really heavy operation. Panels datasheets often specify something on the order of 500ms as the delay you should insert after turning off the panel before turning it on again. In addition, turning on a panel can have delays on the order of 100ms - 200ms