On Tue, Nov 27, 2018 at 6:11 PM Tomasz Figa <tfiga@xxxxxxxxxxxx> wrote: > > Hi Johan, > > Adding the dri-devel mailing lists and some maintainers. > > On Sun, Nov 25, 2018 at 12:53 AM Johan Jonker <jbx9999@xxxxxxxxxxx> wrote: > > > > For a TV stick called MK808 with rk3066 processor I would like to enable > > the VOP and HDMI. > > With boot logo and console enabled I can see 2 pinguins and a cursor for > > a second and then the display is black. > > From a internet search I learned that the rk3066 doesn't support a > > vblank counter. > > Yet they have replaced the Rockchip custom wait_for_vblanks with a drm > > helper. > > All of the Rockchip SoCs supported by the upstream driver lack a > vblank counter and the code that you refer to is designed for this > limitation in particular. I suspect the problem you're seeing is > unrelated. > > > > > Question for the authors and reviewers: > > > > -Did anyone test this convert on a rk3066? > > Not sure. I have tested internally on RK3399. > > > -Can someone with more knowledge explane what happens in this crash > > rapport below. > > To me, it looks like the vblank interrupt > Oops. I meant: It looks like the vblank interrupt doesn't fire for some reason. > > -Can this be fixed? > > > > Very likely. :) > > > Please contact if more info is needed. > > > > I don't see display support enabled in the rk3066-mk808.dts in latest upstream: > https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/rk3066a-mk808.dts > > Do you have any local changes in your kernel sources? > > Best regards, > Tomasz > > > Kind regards, > > > > Johan Jonker > > > > /////////////////////////////////////////// > > > > Reference: > > > > -drm/rockchip: Replace custom wait_for_vblanks with helper > > https://patchwork.kernel.org/patch/9331351/ > > > > -drm/rockchip: don't wait for vblank if fb hasn't changed > > https://patchwork.kernel.org/patch/8024741/ > > > > -explain why we can't wait_for_vblanks > > https://lore.kernel.org/patchwork/patch/635586/ > > > > -drm/rockchip: Convert to support atomic API > > https://patchwork.kernel.org/patch/7732341/ > > > > -drm/rockchip: Convert to support atomic API > > https://patchwork.kernel.org/patch/7868601/ > > > > https://lkml.org/lkml/2017/9/4/251 > > > > > > ////////////////////////////////////////// > > > > [ 0.897682] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > > [ 0.904616] [drm] No driver support for vblank timestamp query. > > > > [ 1.440201] [drm:drm_calc_timestamping_constants] crtc 30: hwmode: > > htotal 1650, vtotal 750, vdisplay 720 > > [ 1.440212] [drm:drm_calc_timestamping_constants] crtc 30: clock > > 74250 kHz framedur 16666666 linedur 22222 > > > > [ 1.440307] [drm:drm_crtc_vblank_on] crtc 0, vblank enabled 0, > > inmodeset 0 > > > > [ 1.451189] [drm:drm_vblank_enable] enabling vblank on crtc 0, ret: 0 > > > > [ 1.451202] [drm:drm_update_vblank_count] updating vblank count on > > crtc 0: current=1, diff=0, hw=0 hw_last=0 > > . > > . > > . > > . > > [ 4.303883] [drm:drm_update_vblank_count] updating vblank count on > > crtc 0: current=113, diff=1, hw=0 hw_last=0 > > [ 4.304140] Warning: unable to open an initial console. > > > > > > [ 6.777825] ------------[ cut here ]------------ > > [ 6.786554] WARNING: CPU: 0 PID: 19 at > > drivers/gpu/drm/drm_atomic_helper.c:1406 > > drm_atomic_helper_wait_for_vblanks.part.1+0x298/0x2a0 > > [ 6.800803] [CRTC:30:crtc-0] vblank wait timed out > > [ 6.806701] Modules linked in: > > [ 6.810317] CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted > > 4.20.0-rc1-g0d694f0b3-dirty #19 > > [ 6.819938] Hardware name: Rockchip (Device Tree) > > [ 6.825498] Workqueue: events output_poll_execute > > [ 6.831062] [<c01104a0>] (unwind_backtrace) from [<c010c868>] > > (show_stack+0x10/0x14) > > [ 6.840191] [<c010c868>] (show_stack) from [<c069e538>] > > (dump_stack+0x88/0x9c) > > [ 6.848729] [<c069e538>] (dump_stack) from [<c0122784>] > > (__warn+0xf8/0x110) > > [ 6.856936] [<c0122784>] (__warn) from [<c01227e4>] > > (warn_slowpath_fmt+0x48/0x6c) > > [ 6.873544] [<c01227e4>] (warn_slowpath_fmt) from [<c0445b04>] > > (drm_atomic_helper_wait_for_vblanks.part.1+0x298/0x2a0) > > [ 6.886148] [<c0445b04>] (drm_atomic_helper_wait_for_vblanks.part.1) > > from [<c0477fec>] (rockchip_atomic_helper_commit_tail_rpm+0x17c/0x194) > > [ 6.900896] [<c0477fec>] (rockchip_atomic_helper_commit_tail_rpm) > > from [<c0447418>] (commit_tail+0x40/0x6c) > > [ 6.912370] [<c0447418>] (commit_tail) from [<c0447508>] > > (drm_atomic_helper_commit+0xbc/0x128) > > [ 6.922515] [<c0447508>] (drm_atomic_helper_commit) from [<c0449b38>] > > (restore_fbdev_mode_atomic+0x1cc/0x1dc) > > [ 6.934196] [<c0449b38>] (restore_fbdev_mode_atomic) from > > [<c044d34c>] (drm_fb_helper_restore_fbdev_mode_unlocked+0x54/0xa0) > > [ 6.947410] [<c044d34c>] (drm_fb_helper_restore_fbdev_mode_unlocked) > > from [<c044d3c8>] (drm_fb_helper_set_par+0x30/0x54) > > [ 6.960213] [<c044d3c8>] (drm_fb_helper_set_par) from [<c044d2b4>] > > (drm_fb_helper_hotplug_event.part.9+0x90/0xa8) > > [ 6.972305] [<c044d2b4>] (drm_fb_helper_hotplug_event.part.9) from > > [<c043cd70>] (drm_kms_helper_hotplug_event+0x24/0x30) > > [ 6.985108] [<c043cd70>] (drm_kms_helper_hotplug_event) from > > [<c043cf30>] (output_poll_execute+0x188/0x1a0) > > [ 6.996583] [<c043cf30>] (output_poll_execute) from [<c013bc68>] > > (process_one_work+0x218/0x508) > > [ 7.006829] [<c013bc68>] (process_one_work) from [<c013ca9c>] > > (worker_thread+0x30/0x59c) > > [ 7.016360] [<c013ca9c>] (worker_thread) from [<c01415b0>] > > (kthread+0x124/0x154) > > [ 7.025073] [<c01415b0>] (kthread) from [<c01010e8>] > > (ret_from_fork+0x14/0x2c) > > [ 7.033567] Exception stack(0xeea3dfb0 to 0xeea3dff8) > > [ 7.039514] dfa0: 00000000 > > 00000000 00000000 00000000 > > [ 7.049145] dfc0: 00000000 00000000 00000000 00000000 00000000 > > 00000000 00000000 00000000 > > [ 7.058774] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 > > [ 7.066677] ---[ end trace aaf7d2040cebe21e ]--- > > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx 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