Hi Robert, Am Donnerstag, 21. Februar 2019, 11:27:15 CET schrieb Robert Foss: > Hey Heiko, > > I've just started booting the RK3399 based Radxa Rock Pi 4 on the mainline > kernel. Specifically on linux-rockchip/for-next, with an additional patch > adding the GPU DT node[1]. > > Unfortunately I'm seeing an artifact on all display output[2]. > It, from the VT to 3D content. > > Is this an issue that has been encountered before? I haven't seen something like this before. I do test graphics on most Rockchip socs regularly (right now dw-hdmi only on non-rk3399 socs though). Did you try full linux-next as well? My for-next branch obviously only carries dt/soc-driver stuff but not things like drm-misc. One possible issue might be the generated clocks. You could check $debug/clk/clk_summary for the dclk_vopX to see if that matches the suggested clock for the mode. (For example check the requested rate in rockchip_vop.c against what it actually gets). Heiko > [1] https://patchwork.kernel.org/patch/10817637/mbox/ > [2] https://photos.app.goo.gl/ArffJ3785JSeQatW7 > > > Rob. > _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
