Hello Cristian, On 11/28/2025 5:44 PM, Cristian Ciocaltea wrote: > The precision was something I initially looked into for CRC verification, in > the > context of the related IGT test. But since I've added the VKMS support, I > think > we should not worry about that anymore. > > Moreover, as already pointed out in [1], only RK3576 supports CRC generation > at > display controller level, and that is not particularly useful because it > doesn't
I believe you can get the CRTC CRC on the RK3576, even when only the background is visible and all plane is disabled. Feel free to let me know if you run into any issues :) > take the background color into account. Therefore I had to capture the frame > CRCs at DisplayPort AUX channel level, by using the USB-C DP AltMode capable Oh that sounds interesting! I'm not sure how complex it would be to implement. > port of my RK3588-based board. However, that solution is not yet available > upstream, as it requires further work for cleanup and improving the overall > USB-C reliability. > > Hence I'll move on with your suggestion and switch to the simple bit-shifting > approach for the next revision. -- Best, Chaoyi
