Hi Nikolaus,
On Tue, Nov 19, 2019 at 10:42:55AM +0100, H. Nikolaus Schaller wrote:
Am 18.11.2019 um 15:51 schrieb H. Nikolaus Schaller hns@goldelico.com:
Ok, I tried not to break video mode support, but I do not have any hardware. Make sure to set the MIPI_DSI_MODE_VIDEO flag in the panel driver.
Indeed, this may be missing (can't look into the code at the moment)... Or I did something wrong when refactoring the driver. We will find out.
Yes, MIPI_DSI_MODE_VIDEO was indeed missing/wrongly applied and some more bugs. But I still wasn't able to make it work.
I also tried to fake the panel-orisetech-otm8009a.c DSI driver into my setup. It should not properly program the panel by DCS command but it should try to.
Result is the same: I can see it being probed and calling get_modes but then:
[drm] Cannot find any crtc or sizes
And I don't see calls to .enable or .prepare where DCS commands would be sent.
You probably want to enable all kind of drm debugging to get more information. I guess, that some timing check fails, e.g. dsi_check_timings(). If the timing checks fail, the mode will not be added as valid mode. When no valid mode is found, the panel will not be enabled.
-- Sebastian