Hi Andy, On Mon, 7 Mar 2022 at 12:18, Andy Yan <andy.yan@xxxxxxxxxxxxxx> wrote: > On 2/25/22 15:51, Sascha Hauer wrote: > > The VOP2 unit is found on Rockchip SoCs beginning with rk3566/rk3568. > > It replaces the VOP unit found in the older Rockchip SoCs. > > > > This driver has been derived from the downstream Rockchip Kernel and > > heavily modified: > > > > - All nonstandard DRM properties have been removed > > - dropped struct vop2_plane_state and pass around less data between > > functions > > - Dropped all DRM_FORMAT_* not known on upstream > > - rework register access to get rid of excessively used macros > > - Drop all waiting for framesyncs > > > > The driver is tested with HDMI and MIPI-DSI display on a RK3568-EVB > > board. Overlay support is tested with the modetest utility. AFBC support > > on the cluster windows is tested with weston-simple-dmabuf-egl on > > weston using the (yet to be upstreamed) panfrost driver support. > > When run a weston 10.0.0: > > # export XDG_RUNTIME_DIR=/tmp > # weston --backend=drm-backend.so --use-pixma --tty=2 > --continue=without-input > > I got the following error: > > drm_atomic_check_only [PLANE:31:Smart0-win0] CRTC set but no FB Can you please start Weston with --logger-scopes=log,drm-backend and attach the output? Cheers, Daniel