Hi Morimoto-san, On Thursday, 18 October 2018 05:12:14 EET Kuninori Morimoto wrote: > Hi Vladimir, Laurent > > I'm testing ULCB board, and I noticed that HDMI doen't work on it. > > - Sometimes kernel panic happen (I lost log, but it said "get crc" > something error), - Often, kernel doesn't boot with below log if I > connected HDMI cable when booting > - Monitor say "No signal" if I connected cable *after* booting > > I'm using Geert's renesas-drivers-2018-10-09-v4.19-rc7 branch. > It seems salvator HDMI is working correctly on it. > I attached my .config I tried to reproduce the problem, starting with drm-next which seems to work fine, moving to renesas-drivers-2018-10-09-v4.19-rc7 which also didn't exhibit any issue. I then used your kernel configuration, and got a WARN_ON \o/ [ 1.805110] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.811758] [drm] No driver support for vblank timestamp query. [ 1.878688] WARNING: CPU: 1 PID: 62 at /home/laurent/src/iob/renesas/linux/ drivers/gpu/drm/rcar-du/rcar_du_crtc.c:229 rcar_du_crtc_get+0x604/0x628 [ 1.878712] CPU: 1 PID: 62 Comm: kworker/1:1 Not tainted 4.19.0-rc7 #2820 [ 1.878716] Hardware name: Renesas H3ULCB Kingfisher board based on r8a7795 ES2.0+ (DT) [ 1.878725] Workqueue: events deferred_probe_work_func [ 1.878734] pstate: 00000005 (nzcv daif -PAN -UAO) [ 1.878739] pc : rcar_du_crtc_get+0x604/0x628 [ 1.878743] lr : rcar_du_crtc_get+0xa8/0x628 [ 1.878747] sp : ffff00000a12b330 [ 1.878750] x29: ffff00000a12b330 x28: 0000000000000000 [ 1.878759] x27: 0000000000000004 x26: ffff8006f90fc000 [ 1.878768] x25: ffff8006f9de3ad8 x24: 0000000000000001 [ 1.878776] x23: 0000000000000001 x22: 0000000006590fa0 [ 1.878784] x21: ffff8006f9026818 x20: ffff000008a6e000 [ 1.878792] x19: ffff8006f9610770 x18: 0000000000001ef4 [ 1.878799] x17: 0000000000000000 x16: ffff8006faee5900 [ 1.878807] x15: 0000000000001eeb x14: ffff0000096a9000 [ 1.878815] x13: 0000000000001ef6 x12: 0000000000001eeb [ 1.878823] x11: ffff8006faee60e0 x10: ffff000008ab5000 [ 1.878831] x9 : ffff0000098ad000 x8 : ffff8006faee5900 [ 1.878839] x7 : ffff000008b1a000 x6 : ffff000008b1a308 [ 1.878847] x5 : 0000000000000002 x4 : 0000000000000006 [ 1.878855] x3 : ffff0000087d7670 x2 : ffff8006f9610018 [ 1.878862] x1 : 0000000000000000 x0 : ffff8006f9611cf0 [ 1.878871] Call trace: [ 1.878876] rcar_du_crtc_get+0x604/0x628 [ 1.878880] rcar_du_crtc_atomic_begin+0x2c/0x60 [ 1.878890] drm_atomic_helper_commit_planes+0x84/0x218 [ 1.878895] rcar_du_atomic_commit_tail+0x38/0x70 [ 1.878900] commit_tail+0x4c/0x80 [ 1.878904] drm_atomic_helper_commit+0xfc/0x178 [ 1.878911] drm_atomic_commit+0x54/0x60 [ 1.878918] restore_fbdev_mode_atomic+0x180/0x1f0 [ 1.878922] restore_fbdev_mode+0x58/0x198 [ 1.878927] drm_fb_helper_restore_fbdev_mode_unlocked+0x80/0xd8 [ 1.878932] drm_fb_helper_set_par+0x34/0x68 [ 1.878939] fbcon_init+0x504/0x558 [ 1.878945] visual_init+0xa0/0xf0 [ 1.878950] do_bind_con_driver+0x160/0x338 [ 1.878955] do_take_over_console+0x128/0x1a8 [ 1.878959] do_fbcon_takeover+0x80/0x108 [ 1.878964] fbcon_event_notify+0x9ac/0x9d8 [ 1.878971] notifier_call_chain+0x5c/0x98 [ 1.878975] __blocking_notifier_call_chain+0x58/0xa0 [ 1.878979] blocking_notifier_call_chain+0x3c/0x50 [ 1.878983] fb_notifier_call_chain+0x30/0x40 [ 1.878987] register_framebuffer+0x288/0x330 [ 1.878992] __drm_fb_helper_initial_config_and_unlock+0x24c/0x410 [ 1.878996] drm_fb_helper_fbdev_setup+0xf0/0x210 [ 1.879000] drm_fbdev_cma_init+0xa4/0xf0 [ 1.879005] rcar_du_modeset_init+0x3b4/0x570 [ 1.879009] rcar_du_probe+0x134/0x210 [ 1.879016] platform_drv_probe+0x58/0xb8 [ 1.879020] really_probe+0x20c/0x2a0 [ 1.879024] driver_probe_device+0x60/0x108 [ 1.879028] __device_attach_driver+0x9c/0xe0 [ 1.879031] bus_for_each_drv+0x80/0xe0 [ 1.879035] __device_attach+0xf0/0x150 [ 1.879039] device_initial_probe+0x24/0x30 [ 1.879042] bus_probe_device+0xa0/0xa8 [ 1.879046] deferred_probe_work_func+0x78/0xb0 [ 1.879052] process_one_work+0x2c4/0x6c0 [ 1.879055] worker_thread+0x244/0x438 [ 1.879060] kthread+0x100/0x130 [ 1.879067] ret_from_fork+0x10/0x1c [ 1.879070] irq event stamp: 42150 [ 1.879080] hardirqs last enabled at (42149): [<ffff00000873feac>] _raw_spin_unlock_irqrestore+0x7c/0x88 [ 1.879086] hardirqs last disabled at (42150): [<ffff00000808192c>] do_debug_exception+0x17c/0x1b8 [ 1.879090] softirqs last enabled at (41936): [<ffff00000808200c>] __do_softirq+0x46c/0x51c [ 1.879097] softirqs last disabled at (41915): [<ffff0000080b0914>] irq_exit+0x12c/0x138 [ 1.879100] ---[ end trace ec07bda5b9bd7ef1 ]--- I'm now investigating it. -- Regards, Laurent Pinchart
