16:33 <JungerBoyo> Hello, I'm trying to implement gamma lut in VOP2 for rk3566/8. I have tried first porting some implementation of it found in radxa sources, after some chiseling I were able to get the drm property GAMMA_LUT_SIZE to be 1024. However when I tried to run userspace tools writing to gamma lut table such as gammastep or wlsunset the screen just turned black. I tried different approach with trying to

16:33 <JungerBoyo> base an implementation on how it is done in VOP1. Gamma size property was 1024 as it should but screen was black by default this time. I were I able to "turn it back on" with running wlsunset and exiting it.

16:35 <JungerBoyo> Differences I noticed between VOP1 and VOP2 is that I have video ports 0 1 2 each with its own crtc in VOP2.

16:39 <JungerBoyo> I'm wondering if there is some more detailed documentation, because rk3568 TRM part 2 I have is scarce regarding gamma lut. Really there is only breif general description of how gamma is applied dsp lut en bit definition and lut port sel definition.

16:46 <JungerBoyo> So regarding message before the previous one, do I understand correctly that there is 1 physical gamma lut table on the hw and we need to hold a lut table for each video port in the driver?

20:33 <JungerBoyo> To anyone who read my prev messages and saw me logout - I monitor irc logs so no worries I will see if someone replies :)