Hi Robert and Heiko, On 21.02.19 14:26, Heiko Stuebner wrote: > 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). for the record: I've seen exactly the same as Heiko on my Rock Pi 4 A (2GB) using stock Arch Linux ARM Kernel (4.20.11) using dts from "arm64: dts: rockchip: add ROCK Pi 4 DTS support" (v1 though). As the dts is for 5.1, i was expecting some minor problems. But since Heiko had the exact same artifacts i though i let you know that not him alone. Michael > > 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 > _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
