Am Dienstag, 22. April 2025, 09:04:39 Mitteleuropäische Sommerzeit schrieb Andy Yan: > From: Andy Yan <andy....@rock-chips.com> > > When preparing to convert the current inno hdmi driver into a > bridge driver, I found that there are several issues currently > existing with it: > > 1. When the system starts up, the first time it reads the EDID, it > will fail. This is because RK3036 HDMI DDC bus requires it's PHY's > reference clock to be enabled first before normal DDC communication > can be carried out. > > 2. The signal is unstable. When running the glmark2 test on the screen, > there is a small probability of seeing some screen flickering. > This is because The HSYNC/VSYNC polarity of rk3036 HDMI are controlled > by GRF. This part is missing in the current driver. > > PATCH 1~6 are try to Fix Document in the dt-binding, then add the > missing part in driver and dts. > PATCH 7 converts the curren driver to drm bridge mode.
After resurrecting my rk3036-kylin which hasn't sucessfully booted in a while, I could veryify this series, so on a rk3036-kylin Tested-by: Heiko Stuebner <he...@sntech.de> I'll probably apply patches 1-4 to drm-misc later today, as that solely touches the Rockchip (and only rk3036-)side and patches 5+6 to the rockchip tree. Patch 7 should probably get some attention by people more familiar with drm-bridges, so I'll let that sit for a bit longer. Thanks a lot for working on all this Heiko
