[PATCH v5 0/5] drm: exynos: dsi: Convert drm bridge
Marek Szyprowski
m.szyprowski at samsung.com
Fri Jan 21 12:44:08 UTC 2022
Hi Jagan,
On 21.01.2022 12:40, Jagan Teki wrote:
> On Fri, Jan 21, 2022 at 5:06 PM Marek Szyprowski
> <m.szyprowski at samsung.com> wrote:
>> On 17.01.2022 09:42, Jagan Teki wrote:
>>> Updated series about drm bridge conversion of exynos dsi.
>>>
>>> Previous version can be accessible, here [1].
>>>
>>> Patch 1: connector reset
>>>
>>> Patch 2: panel_bridge API
>>>
>>> Patch 3: bridge conversion
>>>
>>> Patch 4: atomic functions
>>>
>>> Patch 5: DSI init in pre_enable
>>>
>>> Apply below patches to test on Exynos DSI:
>>> - https://protect2.fireeye.com/v1/url?k=53bdf119-0c26c815-53bc7a56-000babff3563-792dc1a6b54db43e&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fpatch%2F1825%2F
>>> - https://protect2.fireeye.com/v1/url?k=cb269ea3-94bda7af-cb2715ec-000babff3563-e6f545b4a32558ba&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fpatch%2F1838%2F
>>>
>>> [1] https://protect2.fireeye.com/v1/url?k=ee1dae12-b186971e-ee1c255d-000babff3563-83eaf8e86e67e0d9&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fcover%2F1826%2F
>>>
>>> Any inputs?
>> I've tried a few times, but I am unable to find what is the base for
>> this patchset. I always get a conflict around exynos_dsi_mode_set()
>> function. I've tried current linux-next, drm-next, v5.16-rc1 and v5.16.
>> It looks that I must have missed applying some patch before playing with
>> this.
>>
>> I've also tried to apply only the last patch, as if I got it right, it
>> is the only difference between v4 and v5 and updated 'drm: of: Lookup if
>> child node has panel or bridge'. In such case the board freezes during
>> the drm initialization.
> Please use drm-misc/drm-misc-next with below patches and then apply this series.
I don't have a good news. It doesn't work. The last patch even breaks
DSI operation:
[ 4.520276] [drm] Exynos DRM: using 13800000.decon device for DMA
mapping operations
[ 4.520578] exynos-drm exynos-drm: bound 13800000.decon (ops
decon_component_ops)
[ 4.580473] exynos-drm exynos-drm: bound 13880000.decon (ops
decon_component_ops)
[ 4.580726] exynos-drm exynos-drm: bound 13930000.mic (ops
exynos_mic_component_ops)
[ 4.584304] exynos-dsi 13900000.dsi: [drm:exynos_dsi_host_attach]
Attached s6e3hf2 device
[ 4.585141] exynos-drm exynos-drm: bound 13900000.dsi (ops
exynos_dsi_component_ops)
[ 4.593189] rc_core: Couldn't load IR keymap rc-cec
[ 4.594133] Registered IR keymap rc-empty
[ 4.598760] rc rc0: sii8620 as /devices/virtual/rc/rc0
[ 4.605219] input: sii8620 as /devices/virtual/rc/rc0/input1
[ 4.610238] exynos-drm exynos-drm: bound 13970000.hdmi (ops
hdmi_component_ops)
[ 4.920038] exynos-dsi 13900000.dsi: xfer timed out: 39 03 00 00 f0 5a 5a
[ 5.024033] ------------[ cut here ]------------
[ 5.024055] [CRTC:49:crtc-0] vblank wait timed out
[ 5.024129] WARNING: CPU: 4 PID: 151 at
drivers/gpu/drm/drm_atomic_helper.c:1530
drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 5.024171] Modules linked in:
[ 5.024195] CPU: 4 PID: 151 Comm: kworker/4:7 Not tainted 5.16.0-rc5+
#11232
[ 5.024219] Hardware name: Samsung TM2E board (DT)
[ 5.024232] Workqueue: events output_poll_execute
[ 5.024262] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 5.024285] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 5.024308] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 5.024327] sp : ffff800013b5b970
[ 5.024340] x29: ffff800013b5b970 x28: 0000000000000000 x27:
ffff00002437e400
[ 5.024391] x26: 0000000000000000 x25: 0000000000000000 x24:
ffff800011aa0c60
[ 5.024437] x23: 0000000000000001 x22: ffff000025113000 x21:
0000000000000001
[ 5.024482] x20: ffff0000316fc800 x19: 0000000000000000 x18:
ffffffffffffffff
[ 5.024526] x17: 0048000000000a11 x16: 0000000000000028 x15:
ffff800011b66df8
[ 5.024571] x14: 0000000000000000 x13: 0a74756f2064656d x12:
6974207469617720
[ 5.024615] x11: 656820747563205b x10: 000000000000003a x9 :
000000007e82f035
[ 5.024661] x8 : ffff800011b66df8 x7 : ffff800013b5b740 x6 :
0000000000000001
[ 5.024704] x5 : 0000000000000001 x4 : 0000000000000000 x3 :
0000000000000007
[ 5.024747] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 :
0000000000000000
[ 5.024791] Call trace:
[ 5.024802] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 5.024825] drm_atomic_helper_commit_tail_rpm+0x60/0x78
[ 5.024845] commit_tail+0x9c/0x170
[ 5.024864] drm_atomic_helper_commit+0x188/0x3a0
[ 5.024884] drm_atomic_commit+0x54/0x68
[ 5.024906] drm_client_modeset_commit_atomic+0x260/0x288
[ 5.024927] drm_client_modeset_commit_locked+0x54/0x1c0
[ 5.024945] drm_client_modeset_commit+0x2c/0x50
[ 5.024962] __drm_fb_helper_restore_fbdev_mode_unlocked+0x88/0xf8
[ 5.024983] drm_fb_helper_set_par+0x38/0x70
[ 5.025000] drm_fb_helper_hotplug_event.part.29+0xb0/0xe0
[ 5.025018] drm_fb_helper_output_poll_changed+0x30/0x40
[ 5.025035] drm_kms_helper_hotplug_event+0x28/0x40
[ 5.025053] output_poll_execute+0xc4/0x1f0
[ 5.025071] process_one_work+0x29c/0x6e8
[ 5.025090] worker_thread+0x48/0x460
[ 5.025106] kthread+0x154/0x188
[ 5.025128] ret_from_fork+0x10/0x20
[ 5.025148] irq event stamp: 878
[ 5.025160] hardirqs last enabled at (877): [<ffff80001010e9fc>]
vprintk_emit+0x2bc/0x2f8
[ 5.025188] hardirqs last disabled at (878): [<ffff80001100fccc>]
el1_dbg+0x24/0x88
[ 5.025214] softirqs last enabled at (206): [<ffff800010010488>]
_stext+0x488/0x5cc
[ 5.025233] softirqs last disabled at (201): [<ffff800010095718>]
irq_exit_rcu+0x168/0x1a8
[ 5.025256] ---[ end trace 458e29685f12760b ]---
[ 15.240069] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 15.240131] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0]
commit wait timed out
[ 25.480001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 25.480031] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1]
commit wait timed out
[ 35.720001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 35.720031] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2]
commit wait timed out
[ 35.824013] ------------[ cut here ]------------
[ 35.824037] [CRTC:49:crtc-0] vblank wait timed out
[ 35.824116] WARNING: CPU: 7 PID: 74 at
drivers/gpu/drm/drm_atomic_helper.c:1530
drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 35.824155] Modules linked in:
[ 35.824180] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G
W 5.16.0-rc5+ #11232
[ 35.824205] Hardware name: Samsung TM2E board (DT)
[ 35.824221] Workqueue: events_unbound deferred_probe_work_func
[ 35.824255] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 35.824281] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 35.824304] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 35.824325] sp : ffff80001386b380
[ 35.824339] x29: ffff80001386b380 x28: 0000000000000000 x27:
ffff000023c91c00
[ 35.824395] x26: 0000000000000000 x25: 0000000000000000 x24:
ffff800011aa0c60
[ 35.824446] x23: 0000000000000001 x22: ffff000025113000 x21:
0000000000000001
[ 35.824495] x20: ffff0000316fc800 x19: 0000000000000000 x18:
ffffffffffffffff
[ 35.824544] x17: 0048000000000a11 x16: 0000000000000028 x15:
ffff800011b66df8
[ 35.824594] x14: 0000000000000000 x13: 0a74756f2064656d x12:
6974207469617720
[ 35.824643] x11: 656820747563205b x10: 000000000000003a x9 :
0000000088c3aa19
[ 35.824693] x8 : ffff800011b66df8 x7 : ffff80001386b150 x6 :
0000000000000001
[ 35.824741] x5 : 0000000000000001 x4 : 0000000000000000 x3 :
000000000000000c
[ 35.824788] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 :
0000000000000000
[ 35.824838] Call trace:
[ 35.824851] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 35.824875] drm_atomic_helper_commit_tail_rpm+0x60/0x78
[ 35.824898] commit_tail+0x9c/0x170
[ 35.824918] drm_atomic_helper_commit+0x188/0x3a0
[ 35.824939] drm_atomic_commit+0x54/0x68
[ 35.824962] drm_client_modeset_commit_atomic+0x260/0x288
[ 35.824983] drm_client_modeset_commit_locked+0x54/0x1c0
[ 35.825003] drm_client_modeset_commit+0x2c/0x50
[ 35.825023] __drm_fb_helper_restore_fbdev_mode_unlocked+0x88/0xf8
[ 35.825043] drm_fb_helper_set_par+0x38/0x70
[ 35.825062] fbcon_init+0x440/0x4e0
[ 35.825085] visual_init+0xb0/0x108
[ 35.825107] do_bind_con_driver+0x1cc/0x3c0
[ 35.825127] do_take_over_console+0x148/0x1d8
[ 35.825148] do_fbcon_takeover+0x70/0xe8
[ 35.825170] fbcon_fb_registered+0x13c/0x150
[ 35.825192] register_framebuffer+0x1c4/0x340
[ 35.825211] __drm_fb_helper_initial_config_and_unlock+0x360/0x548
[ 35.825239] drm_fb_helper_initial_config+0x44/0x50
[ 35.825257] exynos_drm_fbdev_init+0x90/0x100
[ 35.825282] exynos_drm_bind+0x164/0x1a8
[ 35.825303] try_to_bring_up_master+0x15c/0x1c8
[ 35.825326] __component_add+0xa8/0x170
[ 35.825348] component_add+0x10/0x18
[ 35.825370] hdmi_probe+0x43c/0x6d0
[ 35.825389] platform_probe+0x90/0xd8
[ 35.825412] really_probe+0xb4/0x2e0
[ 35.825432] __driver_probe_device+0x78/0xd8
[ 35.825452] driver_probe_device+0x40/0x110
[ 35.825473] __device_attach_driver+0x9c/0xd8
[ 35.825494] bus_for_each_drv+0x70/0xc8
[ 35.825513] __device_attach+0xec/0x150
[ 35.825533] device_initial_probe+0x10/0x18
[ 35.825556] bus_probe_device+0x94/0xa0
[ 35.825575] deferred_probe_work_func+0x84/0xc0
[ 35.825595] process_one_work+0x29c/0x6e8
[ 35.825614] worker_thread+0x21c/0x460
[ 35.825631] kthread+0x154/0x188
[ 35.825653] ret_from_fork+0x10/0x20
[ 35.825673] irq event stamp: 162880
[ 35.825687] hardirqs last enabled at (162879): [<ffff80001010e9fc>]
vprintk_emit+0x2bc/0x2f8
[ 35.825716] hardirqs last disabled at (162880): [<ffff80001100fccc>]
el1_dbg+0x24/0x88
[ 35.825742] softirqs last enabled at (162726): [<ffff800010010488>]
_stext+0x488/0x5cc
[ 35.825763] softirqs last disabled at (162721): [<ffff800010095718>]
irq_exit_rcu+0x168/0x1a8
[ 35.825787] ---[ end trace 458e29685f12760c ]---
[ 45.960007] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 45.960039] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0]
commit wait timed out
[ 56.200000] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 56.200030] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1]
commit wait timed out
[ 66.440000] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 66.440030] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2]
commit wait timed out
[ 66.544003] ------------[ cut here ]------------
[ 66.544027] [CRTC:49:crtc-0] vblank wait timed out
[ 66.544102] WARNING: CPU: 7 PID: 74 at
drivers/gpu/drm/drm_atomic_helper.c:1530
drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 66.544138] Modules linked in:
[ 66.544162] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G
W 5.16.0-rc5+ #11232
[ 66.544186] Hardware name: Samsung TM2E board (DT)
[ 66.544200] Workqueue: events_unbound deferred_probe_work_func
[ 66.544233] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 66.544255] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 66.544277] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 66.544297] sp : ffff80001386b160
[ 66.544310] x29: ffff80001386b160 x28: 0000000000000000 x27:
ffff000023d83500
[ 66.544363] x26: 0000000000000000 x25: 0000000000000000 x24:
ffff800011aa0c60
[ 66.544412] x23: 0000000000000001 x22: ffff000025113000 x21:
0000000000000001
[ 66.544461] x20: ffff0000316fc800 x19: 0000000000000000 x18:
ffffffffffffffff
[ 66.544509] x17: 0048000000000a11 x16: 0a020a010a110a00 x15:
ffff800011b66df8
[ 66.544558] x14: 0000000000000000 x13: 0a74756f2064656d x12:
6974207469617720
[ 66.544606] x11: 656820747563205b x10: 000000000000003a x9 :
0000000088c3aa19
[ 66.544655] x8 : ffff800011b66df8 x7 : ffff80001386af30 x6 :
0000000000000001
[ 66.544702] x5 : 0000000000000001 x4 : 0000000000000000 x3 :
000000000000000c
[ 66.544749] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 :
0000000000000000
[ 66.544796] Call trace:
[ 66.544808] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 66.544830] drm_atomic_helper_commit_tail_rpm+0x60/0x78
[ 66.544852] commit_tail+0x9c/0x170
[ 66.544871] drm_atomic_helper_commit+0x188/0x3a0
[ 66.544892] drm_atomic_commit+0x54/0x68
[ 66.544915] drm_client_modeset_commit_atomic+0x260/0x288
[ 66.544935] drm_client_modeset_commit_locked+0x54/0x1c0
[ 66.544954] drm_fb_helper_pan_display+0xb0/0x1c0
[ 66.544973] fb_pan_display+0xb8/0x158
[ 66.544990] bit_update_start+0x1c/0x40
[ 66.545013] fbcon_switch+0x308/0x458
[ 66.545034] redraw_screen+0x158/0x238
[ 66.545056] fbcon_prepare_logo+0x3cc/0x440
[ 66.545077] fbcon_init+0x380/0x4e0
[ 66.545098] visual_init+0xb0/0x108
[ 66.545118] do_bind_con_driver+0x1cc/0x3c0
[ 66.545137] do_take_over_console+0x148/0x1d8
[ 66.545158] do_fbcon_takeover+0x70/0xe8
[ 66.545178] fbcon_fb_registered+0x13c/0x150
[ 66.545199] register_framebuffer+0x1c4/0x340
[ 66.545217] __drm_fb_helper_initial_config_and_unlock+0x360/0x548
[ 66.545244] drm_fb_helper_initial_config+0x44/0x50
[ 66.545263] exynos_drm_fbdev_init+0x90/0x100
[ 66.545286] exynos_drm_bind+0x164/0x1a8
[ 66.545306] try_to_bring_up_master+0x15c/0x1c8
[ 66.545329] __component_add+0xa8/0x170
[ 66.545350] component_add+0x10/0x18
[ 66.545371] hdmi_probe+0x43c/0x6d0
[ 66.545389] platform_probe+0x90/0xd8
[ 66.545411] really_probe+0xb4/0x2e0
[ 66.545431] __driver_probe_device+0x78/0xd8
[ 66.545452] driver_probe_device+0x40/0x110
[ 66.545472] __device_attach_driver+0x9c/0xd8
[ 66.545493] bus_for_each_drv+0x70/0xc8
[ 66.545513] __device_attach+0xec/0x150
[ 66.545532] device_initial_probe+0x10/0x18
[ 66.545553] bus_probe_device+0x94/0xa0
[ 66.545573] deferred_probe_work_func+0x84/0xc0
[ 66.545592] process_one_work+0x29c/0x6e8
[ 66.545612] worker_thread+0x21c/0x460
[ 66.545628] kthread+0x154/0x188
[ 66.545651] ret_from_fork+0x10/0x20
[ 66.545671] irq event stamp: 163148
[ 66.545684] hardirqs last enabled at (163147): [<ffff80001010e9fc>]
vprintk_emit+0x2bc/0x2f8
[ 66.545712] hardirqs last disabled at (163148): [<ffff80001100fccc>]
el1_dbg+0x24/0x88
[ 66.545735] softirqs last enabled at (162726): [<ffff800010010488>]
_stext+0x488/0x5cc
[ 66.545754] softirqs last disabled at (162721): [<ffff800010095718>]
irq_exit_rcu+0x168/0x1a8
[ 66.545778] ---[ end trace 458e29685f12760d ]---
[ 66.589975] Console: switching to colour frame buffer device 200x160
[ 76.680050] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 76.680082] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0]
commit wait timed out
[ 86.920001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 86.920030] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1]
commit wait timed out
[ 97.160001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out
[ 97.160029] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2]
commit wait timed out
[ 97.264005] ------------[ cut here ]------------
[ 97.264029] [CRTC:49:crtc-0] vblank wait timed out
[ 97.264103] WARNING: CPU: 7 PID: 74 at
drivers/gpu/drm/drm_atomic_helper.c:1530
drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 97.264139] Modules linked in:
[ 97.264162] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G
W 5.16.0-rc5+ #11232
[ 97.264185] Hardware name: Samsung TM2E board (DT)
[ 97.264199] Workqueue: events_unbound deferred_probe_work_func
[ 97.264231] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
BTYPE=--)
[ 97.264254] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 97.264277] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 97.264298] sp : ffff80001386b290
[ 97.264310] x29: ffff80001386b290 x28: 0000000000000000 x27:
ffff0000250a6a00
[ 97.264361] x26: 0000000000000000 x25: 0000000000000000 x24:
ffff800011aa0c60
[ 97.264409] x23: 0000000000000001 x22: ffff000025113000 x21:
0000000000000001
[ 97.264457] x20: ffff0000316fc800 x19: 0000000000000000 x18:
ffffffffffffffff
[ 97.264505] x17: 0048000000000a11 x16: 0a020a010a110a00 x15:
ffff800011b66df8
[ 97.264554] x14: 0000000000000000 x13: 0a74756f2064656d x12:
6974207469617720
[ 97.264603] x11: 656820747563205b x10: 000000000000003a x9 :
0000000088c3aa19
[ 97.264652] x8 : ffff800011b66df8 x7 : ffff80001386b060 x6 :
0000000000000001
[ 97.264699] x5 : 0000000000000001 x4 : 0000000000000000 x3 :
000000000000000c
[ 97.264746] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 :
0000000000000000
[ 97.264794] Call trace:
[ 97.264806] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8
[ 97.264829] drm_atomic_helper_commit_tail_rpm+0x60/0x78
[ 97.264852] commit_tail+0x9c/0x170
[ 97.264872] drm_atomic_helper_commit+0x188/0x3a0
[ 97.264892] drm_atomic_commit+0x54/0x68
[ 97.264915] drm_client_modeset_commit_atomic+0x260/0x288
[ 97.264936] drm_client_modeset_commit_locked+0x54/0x1c0
[ 97.264955] drm_fb_helper_pan_display+0xb0/0x1c0
[ 97.264974] fb_pan_display+0xb8/0x158
[ 97.264991] bit_update_start+0x1c/0x40
[ 97.265014] fbcon_switch+0x308/0x458
[ 97.265034] redraw_screen+0x158/0x238
[ 97.265056] do_bind_con_driver+0x2d0/0x3c0
[ 97.265075] do_take_over_console+0x148/0x1d8
[ 97.265096] do_fbcon_takeover+0x70/0xe8
[ 97.265117] fbcon_fb_registered+0x13c/0x150
[ 97.265138] register_framebuffer+0x1c4/0x340
[ 97.265156] __drm_fb_helper_initial_config_and_unlock+0x360/0x548
[ 97.265183] drm_fb_helper_initial_config+0x44/0x50
[ 97.265202] exynos_drm_fbdev_init+0x90/0x100
[ 97.265225] exynos_drm_bind+0x164/0x1a8
[ 97.265246] try_to_bring_up_master+0x15c/0x1c8
[ 97.265268] __component_add+0xa8/0x170
[ 97.265289] component_add+0x10/0x18
[ 97.265310] hdmi_probe+0x43c/0x6d0
[ 97.265327] platform_probe+0x90/0xd8
[ 97.265349] really_probe+0xb4/0x2e0
[ 97.265368] __driver_probe_device+0x78/0xd8
[ 97.265388] driver_probe_device+0x40/0x110
[ 97.265408] __device_attach_driver+0x9c/0xd8
[ 97.265428] bus_for_each_drv+0x70/0xc8
[ 97.265446] __device_attach+0xec/0x150
[ 97.265465] device_initial_probe+0x10/0x18
[ 97.265485] bus_probe_device+0x94/0xa0
[ 97.265505] deferred_probe_work_func+0x84/0xc0
[ 97.265524] process_one_work+0x29c/0x6e8
[ 97.265543] worker_thread+0x21c/0x460
[ 97.265559] kthread+0x154/0x188
[ 97.265580] ret_from_fork+0x10/0x20
[ 97.265601] irq event stamp: 163438
[ 97.265613] hardirqs last enabled at (163437): [<ffff80001010e9fc>]
vprintk_emit+0x2bc/0x2f8
[ 97.265641] hardirqs last disabled at (163438): [<ffff80001100fccc>]
el1_dbg+0x24/0x88
[ 97.265664] softirqs last enabled at (163174): [<ffff800010010488>]
_stext+0x488/0x5cc
[ 97.265684] softirqs last disabled at (163169): [<ffff800010095718>]
irq_exit_rcu+0x168/0x1a8
[ 97.265706] ---[ end trace 458e29685f12760e ]---
[ 98.742702] exynos-drm exynos-drm: [drm] fb0: exynos frame buffer device
[ 98.752101] [drm] Initialized exynos 1.1.0 20180330 for exynos-drm on
minor 0
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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