Re: [PATCH] drm: imx: Fix occasional screen corruption on modeset.

2020-07-09 Thread Fuzzey, Martin
Hi Philipp, thanks for the quick reply. On Wed, 8 Jul 2020 at 10:31, Philipp Zabel wrote: > Could this be just a panel getting confused because the pixel clock is > disabled, or is there really an issue with the IPU? Have you tried just > keeping clk_di_pixel enabled in ipu_di_disable(), but co

Re: [PATCH] drm: imx: Fix occasional screen corruption on modeset.

2020-07-08 Thread Philipp Zabel
Hi Martin, On Tue, 2020-07-07 at 17:56 +0200, Martin Fuzzey wrote: > When performing a modeset the atomic core calls > ipu_crtc_atomic_disable() which switches off the DC and DI. > > When we immediately restart as in the modeset case this sometimes > leads to corruption at the bottom of the scree

[PATCH] drm: imx: Fix occasional screen corruption on modeset.

2020-07-08 Thread Martin Fuzzey
When performing a modeset the atomic core calls ipu_crtc_atomic_disable() which switches off the DC and DI. When we immediately restart as in the modeset case this sometimes leads to corruption at the bottom of the screen looking like a mirror image of the top. The exact reason isn't understood b