Hello Heiko, On 03.12.24 21:54, Heiko Stuebner wrote: > This series adds a bridge and glue driver for the DSI2 controller found > in the rk3588 soc from Rockchip, that is based on a Synopsis IP block. > > As the manual states: > The Display Serial Interface 2 (DSI-2) is part of a group of communication > protocols defined by the MIPI Alliance. The MIPI DSI-2 Host Controller is > a digital core that implements all protocol functions defined in the > MIPI DSI-2 Specification. > > > While the driver structure is very similar to the previous DSI controller, > the programming model of the core is quite different, with a completely > new register set. > > Another notable difference is that the phy interface is variable now too > in its width and some other settings. > I did more tests with different LVDS displays. I tested following configurations with DSI/LVDS bridge: - 1024x600@60.01 - 1024x768@60.02 - 1280x800@60.07 - 1366x768@60.06 All of them worked without issues, except 1366x768. With this resolution, video is blurry, and offset incorrectly to the left. There are also repeating errors on the console: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp3 In correct operation with other resolutions, there is no error. I am not sure if this is a problem in your series or rather in VOP2 driver. I tried to track down the problem, and it seems to be a generic issue when horizontal line width is not divisible by 4. Lowering line width to 1364px fixes the issue, but of course I have two vertical lines of black pixels on the right. I also made some tests with 720x1280 DSI display. Lowering horizontal line to 718px shows the same problem. With 720px and 716px it works correctly. Kind regards Daniel
