Camera with specific resolutions couldn't preview on imx8MM

jerry_liu · ‎03-25-2022

Dear NXP Team,

I enabled a camera(Onsemi AP1302 + AR0144) on imx8MM, but it cannot preview when I want to preview specific resolutions.

The camera supports two resolutions, 1280x720(720p) and 1280x800(sensor full size).

However, I tried to enable the camera but it couldn't be enabled before I modified the mipi-csi clock-frequency & camera MIPI setting.

Finally, I success to enable the camera with 720p, but full size still can't be enabled.

I don't know why full size can't, I really wonder that.

My current setting is camera MIPI speed is 400M, mipi-csi clock-frequency is 400M.

fragment@1 {
		target = <&mipi_csi_1>;
		__overlay__ {
			status = "okay";
			#address-cells = <1>;
			#size-cells = <0>;
			clock-frequency = <400000000>;

			port {
				mipi1_sensor_ep: endpoint@1 {
					remote-endpoint = <&tevi_ap1302_1_ep>;
					data-lanes = <4>;
					csis-hs-settle = <13>;
					csis-clk-settle = <2>;
					csis-wclk;
				};
			};
		};
	};

I don't know how to understand mipi-csi setting about "csis-hs-settle" & "csi-clk-settle", and I don't understand how to set the mipi-csi clock-frequency is better. I cannot find any document to describe them and I only found it but there is still no detail about these settings.

Explenation for HS-SETTLE parameter in MIPI CSI D-PHY registers

How do I decide these settings to enable the camera?

joanxie · ‎03-29-2022

if you set 1280x800, what do you mean couldn't enable? what error logfile do you get? pls share the logfile for this resolution, and give me more detailed information

jerry_liu · ‎04-07-2022

Hi @joanxie:

Do you have any updates about this issue?

I tried to read CSI_CR19 (0x32E2_004C) but I didn't find the value was overflow (over 255?).

I tried it like below that:

root@edm-g-imx8mm:~# /unit_tests/memtool -32 32E2004C 1
E
Reading 0x1 count starting at address 0x32E2004C

0x32E2004C:  00000000

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false --no-posi
tion &
[1] 695
root@edm-g-imx8mm:~# Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

root@edm-g-imx8mm:~# /unit_tests/memtool -32 32E2004C 1
E
Reading 0x1 count starting at address 0x32E2004C

0x32E2004C:  00000010

root@edm-g-imx8mm:~# kill -INT 695
handling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:30.588496172
Setting pipeline to NULL ...
Total showed frames (914), playing for (0:00:30.588386298), fps (29.881).
Freeing pipeline ...

[1]+  Done                    gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false --no-position

root@edm-g-imx8mm:~# /unit_tests/memtool -32 32E2004C 1
E
Reading 0x1 count starting at address 0x32E2004C

0x32E2004C:  00000034

However, there is still FIFO overflow Error in mipi_csis_irq_handler when I open 1280x800 again.

If I open 1280x720, it never triggers mipi_csis_irq_handler and it always can work.

I don't know why the different resolutions have different situations.

Do you have any ideas?

jerry_liu · ‎03-31-2022

Updated 2022.03.31:

I found it doesn't trigger mipi_csis_irq_handler but mx6s_csi_irq_handler if I enable 1280x720. But If I enable 1280x800, it firstly triggers mx6s_csi_irq_handler, then it triggers mipi_csis_irq_handler and gets FIFO overflow Error. \

I trace that below:

1. 1280x720 (always work

root@edm-g-imx8mm:/sys/kernel/debug/tracing# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=720 ! imxvideoconvert_g2d ! fpsdisplays
ink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:02.707396750
Setting pipeline to NULL ...
Total showed frames (77), playing for (0:00:02.707361000), fps (28.441).
Freeing pipeline ...
root@edm-g-imx8mm:/sys/kernel/debug/tracing# cat trace | less
# tracer: function
#
# entries-in-buffer/entries-written: 648/648   #P:4
#
#                                _-----=> irqs-off
#                               / _----=> need-resched
#                              | / _---=> hardirq/softirq
#                              || / _--=> preempt-depth
#                              ||| /     delay
#           TASK-PID     CPU#  ||||   TIMESTAMP  FUNCTION
#              | |         |   ||||      |         |
  gst-launch-1.0-705     [003] ....   252.049921: v4l2_open <-chrdev_open
  gst-launch-1.0-705     [003] ....   252.049927: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-705     [003] ....   252.049943: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-705     [003] ....   252.049951: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.049956: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-705     [003] ....   252.049956: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-705     [003] ....   252.049962: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-705     [003] ....   252.049976: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.049981: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.049990: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.050031: v4l2_release <-__fput
  gst-launch-1.0-705     [003] ....   252.050032: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-705     [003] ....   252.050036: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   252.050038: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   252.050043: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   252.050047: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-705     [003] ....   252.050048: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-705     [003] ....   252.050049: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   252.050050: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   252.050053: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   252.050064: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-705     [003] ....   252.171600: v4l2_open <-chrdev_open
  gst-launch-1.0-705     [003] ....   252.171605: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-705     [003] ....   252.171624: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-705     [003] ....   252.171631: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.171636: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-705     [003] ....   252.171636: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-705     [003] ....   252.171642: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-705     [003] ....   252.171654: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.171659: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-705     [003] ....   252.171667: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171816: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171875: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171879: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171882: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171885: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171888: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171890: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171892: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171895: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171901: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   252.171905: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172836: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172848: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-708     [001] ....   252.172858: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172860: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-708     [001] ....   252.172867: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172889: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172892: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-708     [001] ....   252.172896: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172898: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-708     [001] ....   252.172905: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172906: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-708     [001] ....   252.172924: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172925: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-708     [001] ....   252.172928: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172929: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-708     [001] ....   252.172932: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172933: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-708     [001] ....   252.172950: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.172951: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-708     [001] ....   252.173691: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.173706: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-708     [001] ....   252.183367: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183385: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-708     [001] ....   252.183390: csi_deinterlace_enable.isra.0 <-mx6s_vidioc_s_fmt_vid_cap
    v4l2src0:src-708     [001] ....   252.183412: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183415: mipi_csis_g_parm <-mx6s_vidioc_g_parm
    v4l2src0:src-708     [001] ....   252.183423: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183428: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183668: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183677: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183681: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183684: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183686: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.183973: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.184113: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192659: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192677: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192681: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192726: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192814: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192830: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192850: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192855: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192886: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   252.192916: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.203796: csi_dmareq_rff_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-708     [000] ....   252.203802: csi_enable_int.isra.0.constprop.0 <-mx6s_start_streaming
    v4l2src0:src-708     [000] ....   252.203803: csi_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-708     [000] ....   252.203806: mipi_csis_s_stream <-mx6s_vidioc_streamon
    v4l2src0:src-708     [000] ....   252.203812: mipi_csis_start_stream <-mipi_csis_s_stream
    v4l2src0:src-708     [000] ....   252.203828: mipi_csis_system_enable.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-708     [000] ....   252.203830: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-708     [000] ....   252.250454: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   252.269097: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   252.302427: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   252.316813: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   252.316814: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-708     [000] ....   252.316844: v4l2_poll <-do_sys_poll
    v4l2src0:src-708     [000] ....   252.316856: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.322155: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.334966: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.H1   252.335763: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   252.350146: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   252.350148: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-708     [000] ....   252.350170: v4l2_poll <-do_sys_poll
    v4l2src0:src-708     [000] ....   252.350189: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.353110: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.354152: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   252.369098: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   252.383479: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   252.383481: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-708     [000] ....   252.383501: v4l2_poll <-do_sys_poll
    v4l2src0:src-708     [000] ....   252.383515: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.386408: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [000] ....   252.387464: v4l2_poll <-do_sys_poll
... (ignore)
          <idle>-0       [000] d.h1   254.802446: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   254.816831: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   254.816835: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-708     [001] ....   254.816857: v4l2_poll <-do_sys_poll
    v4l2src0:src-708     [001] ....   254.816872: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   254.819163: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   254.828870: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   254.835781: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   254.850164: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   254.850167: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-708     [001] ....   254.850188: v4l2_poll <-do_sys_poll
    v4l2src0:src-708     [001] ....   254.850201: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   254.852504: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-708     [001] ....   254.862387: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   254.869117: mx6s_csi_irq_handler <-__handle_irq_event_percpu
    v4l2src0:src-708     [001] ....   254.881791: v4l2_poll <-do_sys_poll
  gst-launch-1.0-705     [003] ....   254.881893: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   254.881901: csi_dmareq_rff_disable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-705     [003] ....   254.881903: csi_enable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-705     [003] ....   254.882110: mipi_csis_s_stream <-mx6s_vidioc_streamoff
  gst-launch-1.0-705     [003] ....   254.931767: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-705     [003] ....   254.931771: mipi_csis_system_enable.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-705     [003] ....   254.931898: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-705     [003] ....   254.934614: v4l2_release <-__fput
  gst-launch-1.0-705     [003] ....   254.934619: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-705     [003] ....   254.934623: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   254.934625: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   254.934636: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-705     [003] ....   254.934648: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-705     [003] ....   254.934648: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-705     [003] ....   254.934650: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   254.934651: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   254.934658: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-705     [003] ....   254.934675: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend

2. Trace 1280x800 (first enable and it can work after boot, but it show FIFO overflow error after closing camera):

root@edm-g-imx8mm:/sys/kernel/debug/tracing# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:02.532604750
Setting pipeline to NULL ...
[  150.791575] FIFO Overflow Error: 1
[  150.794988] Frame Start: 1
[  150.797694] Frame End: 1
[  150.800225] status: 01100010
Total showed frames (72), playing for (0:00:02.532564875), fps (28.430).
Freeing pipeline ...
root@edm-g-imx8mm:/sys/kernel/debug/tracing# cat trace | less
# tracer: function
#
# entries-in-buffer/entries-written: 618/618   #P:4
#
#                                _-----=> irqs-off
#                               / _----=> need-resched
#                              | / _---=> hardirq/softirq
#                              || / _--=> preempt-depth
#                              ||| /     delay
#           TASK-PID     CPU#  ||||   TIMESTAMP  FUNCTION
#              | |         |   ||||      |         |
  gst-launch-1.0-700     [003] ....   148.082058: v4l2_open <-chrdev_open
  gst-launch-1.0-700     [003] ....   148.082063: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-700     [003] ....   148.082078: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-700     [003] ....   148.082086: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.082090: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-700     [003] ....   148.082091: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-700     [003] ....   148.082097: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-700     [003] ....   148.082111: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.082116: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.082125: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.082167: v4l2_release <-__fput
  gst-launch-1.0-700     [003] ....   148.082169: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-700     [003] ....   148.082172: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-700     [003] ....   148.082174: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-700     [003] ....   148.082179: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-700     [003] ....   148.082184: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-700     [003] ....   148.082185: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-700     [003] ....   148.082186: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [003] ....   148.082187: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [003] ....   148.082190: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [003] ....   148.082201: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-700     [003] ....   148.203420: v4l2_open <-chrdev_open
  gst-launch-1.0-700     [003] ....   148.203425: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-700     [003] ....   148.203444: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-700     [003] ....   148.203450: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.203454: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-700     [003] ....   148.203455: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-700     [003] ....   148.203461: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-700     [003] ....   148.203473: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.203478: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-700     [003] ....   148.203485: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203574: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203630: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203634: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203637: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203639: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203642: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203644: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203647: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203649: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203655: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   148.203659: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204626: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204639: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-703     [002] ....   148.204648: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204649: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-703     [002] ....   148.204657: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204679: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204682: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-703     [002] ....   148.204686: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204688: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-703     [002] ....   148.204695: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204696: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-703     [002] ....   148.204713: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204714: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-703     [002] ....   148.204717: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204718: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-703     [002] ....   148.204721: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204722: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-703     [002] ....   148.204740: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.204742: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-703     [002] ....   148.205450: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.205465: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-703     [002] ....   148.215211: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215229: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-703     [002] ....   148.215234: csi_deinterlace_enable.isra.0 <-mx6s_vidioc_s_fmt_vid_cap
    v4l2src0:src-703     [002] ....   148.215256: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215260: mipi_csis_g_parm <-mx6s_vidioc_g_parm
    v4l2src0:src-703     [002] ....   148.215269: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215274: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215523: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215532: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215535: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215538: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215541: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215793: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.215933: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224608: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224626: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224630: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224676: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224765: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224779: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224801: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224806: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224835: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.224864: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   148.235766: csi_dmareq_rff_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-703     [002] ....   148.235771: csi_enable_int.isra.0.constprop.0 <-mx6s_start_streaming
    v4l2src0:src-703     [002] ....   148.235772: csi_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-703     [002] ....   148.235775: mipi_csis_s_stream <-mx6s_vidioc_streamon
    v4l2src0:src-703     [002] ....   148.235779: mipi_csis_start_stream <-mipi_csis_s_stream
    v4l2src0:src-703     [002] ....   148.235795: mipi_csis_system_enable.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-703     [002] ....   148.235796: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-703     [002] ....   148.282454: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   148.301208: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   148.322313: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   148.338307: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   148.338309: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-703     [002] ....   148.338327: v4l2_poll <-do_sys_poll
    v4l2src0:src-703     [002] ....   148.338340: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [003] ....   148.343898: v4l2_ioctl <-__arm64_sys_ioctl
          <idle>-0       [000] d.h1   148.355650: mx6s_csi_irq_handler <-__handle_irq_event_percpu
    v4l2src0:src-703     [000] ....   148.368066: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   148.371642: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   148.371645: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-703     [000] ....   148.371685: v4l2_poll <-do_sys_poll
    v4l2src0:src-703     [000] ....   148.371695: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [000] ....   148.374845: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [000] ....   148.375973: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   148.388988: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   148.404975: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   148.404977: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-703     [000] ....   148.405000: v4l2_poll <-do_sys_poll
    v4l2src0:src-703     [000] ....   148.405019: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [001] ....   148.408196: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [001] ....   148.409327: v4l2_poll <-do_sys_poll
... (ignore)
          <idle>-0       [000] d.h1   150.688995: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   150.704993: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h2   150.704997: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-703     [002] ....   150.705021: v4l2_poll <-do_sys_poll
    v4l2src0:src-703     [002] ....   150.705035: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   150.707539: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   150.717560: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   150.722334: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          weston-626     [000] d.h.   150.738327: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          weston-626     [000] d.h1   150.738331: mx6s_csi_frame_done.constprop.0 <-mx6s_csi_irq_handler
    v4l2src0:src-703     [002] ....   150.738355: v4l2_poll <-do_sys_poll
    v4l2src0:src-703     [002] ....   150.738372: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-703     [002] ....   150.738839: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   150.738919: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [003] ....   150.738924: csi_dmareq_rff_disable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-700     [003] ....   150.738926: csi_enable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-700     [003] ....   150.739141: mipi_csis_s_stream <-mx6s_vidioc_streamoff
          <idle>-0       [000] d.h1   150.791556: mipi_csis_irq_handler <-__handle_irq_event_percpu
  gst-launch-1.0-700     [001] ....   150.819870: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-700     [001] ....   150.819875: mipi_csis_system_enable.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-700     [001] ....   150.820040: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-700     [001] ....   150.822847: v4l2_release <-__fput
  gst-launch-1.0-700     [001] ....   150.822853: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-700     [001] ....   150.822858: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-700     [001] ....   150.822860: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-700     [001] ....   150.822870: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-700     [001] ....   150.822881: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-700     [001] ....   150.822881: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-700     [001] ....   150.822883: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [001] ....   150.822884: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [001] ....   150.822890: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-700     [001] ....   150.822906: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend

Next enable 1280x800 again (it shows FIFO overflow error and it cannot work

root@edm-g-imx8mm:/sys/kernel/debug/tracing$ echo function > current_tracer
root@edm-g-imx8mm:/sys/kernel/debug/tracing$ gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
[  475.316849] FIFO Overflow Error: 1
[  475.320263] Frame Start: 1
[  475.322969] status: 01000010
[  475.325877] FIFO Overflow Error: 2
[  475.329281] status: 00000010
[  475.334636] FIFO Overflow Error: 3
[  475.338040] status: 00000010
[  475.340932] FIFO Overflow Error: 4
[  475.344332] status: 00000010
[  475.347229] FIFO Overflow Error: 5
[  475.350632] status: 00000010
[  475.367967] FIFO Overflow Error: 6
[  475.371370] status: 00000010
[  475.374267] FIFO Overflow Error: 7
[  475.377668] status: 00000010
[  475.380567] FIFO Overflow Error: 8
[  475.383968] status: 00000010
[  475.401300] FIFO Overflow Error: 9
[  475.404702] status: 00000010
[  475.407599] FIFO Overflow Error: 10
[  475.411088] status: 00000010
[  475.413996] FIFO Overflow Error: 11
[  475.417491] status: 00000010
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:0[  475.434646] FIFO Overflow Error: 12
[  475.439459] status: 00000010
0.220528500
Setting pipeline to [  475.442377] FIFO Overflow Error: 13
[  475.448707] status: 00000010
NULL ...
[  475.459535] FIFO Overflow Error: 14
[  475.463028] status: 00000010
[  475.465938] FIFO Overflow Error: 15
[  475.469426] status: 00000010
[  475.472329] FIFO Overflow Error: 16
[  475.475817] status: 00000010
[  475.478717] FIFO Overflow Error: 17
[  475.482205] status: 00000010
Freeing pipeline ...
root@edm-g-imx8mm:/sys/kernel/debug/tracing# cat trace | less
# tracer: function
#
# entries-in-buffer/entries-written: 132/132   #P:4
#
#                                _-----=> irqs-off
#                               / _----=> need-resched
#                              | / _---=> hardirq/softirq
#                              || / _--=> preempt-depth
#                              ||| /     delay
#           TASK-PID     CPU#  ||||   TIMESTAMP  FUNCTION
#              | |         |   ||||      |         |
  gst-launch-1.0-754     [003] ....   475.170379: v4l2_open <-chrdev_open
  gst-launch-1.0-754     [003] ....   475.170384: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-754     [003] ....   475.170399: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-754     [003] ....   475.170406: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.170410: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-754     [003] ....   475.170411: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-754     [003] ....   475.170415: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-754     [003] ....   475.170427: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.170432: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.170439: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.170472: v4l2_release <-__fput
  gst-launch-1.0-754     [003] ....   475.170473: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-754     [003] ....   475.170475: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.170477: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.170481: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.170485: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-754     [003] ....   475.170485: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-754     [003] ....   475.170486: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.170487: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.170490: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.170499: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-754     [003] ....   475.206900: v4l2_open <-chrdev_open
  gst-launch-1.0-754     [003] ....   475.206905: mx6s_csi_open <-v4l2_open
  gst-launch-1.0-754     [003] ....   475.206923: mx6s_csi_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-754     [003] ....   475.206930: mipi_csis_s_power <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.206934: mipi_csis_runtime_resume <-pm_generic_runtime_resume
  gst-launch-1.0-754     [003] ....   475.206935: mipi_csis_pm_resume <-mipi_csis_runtime_resume
  gst-launch-1.0-754     [003] ....   475.206940: mipi_csis_clk_enable <-mipi_csis_pm_resume
  gst-launch-1.0-754     [003] ....   475.206952: csi_clk_enable <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.206956: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_open
  gst-launch-1.0-754     [003] ....   475.206964: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207032: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207085: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207088: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207091: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207093: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207095: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207098: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207100: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207103: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207109: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.207113: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208068: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208082: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-757     [000] ....   475.208092: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208093: mipi_csis_enum_mbus_code <-call_enum_mbus_code
    v4l2src0:src-757     [000] ....   475.208101: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208120: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208123: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-757     [000] ....   475.208126: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208128: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-757     [000] ....   475.208134: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208135: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-757     [000] ....   475.208150: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208151: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-757     [000] ....   475.208153: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208154: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-757     [000] ....   475.208156: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208157: mipi_csis_enum_frameintervals <-call_enum_frame_interval
    v4l2src0:src-757     [000] ....   475.208173: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208174: mipi_csis_enum_framesizes <-call_enum_frame_size
    v4l2src0:src-757     [000] ....   475.208793: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.208808: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-757     [000] ....   475.217925: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.217943: mipi_csis_set_fmt <-call_set_fmt
    v4l2src0:src-757     [000] ....   475.217947: csi_deinterlace_enable.isra.0 <-mx6s_vidioc_s_fmt_vid_cap
    v4l2src0:src-757     [000] ....   475.217968: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.217971: mipi_csis_g_parm <-mx6s_vidioc_g_parm
    v4l2src0:src-757     [000] ....   475.217979: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.217984: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218214: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218223: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218226: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218229: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218231: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218398: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.218516: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226431: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226451: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226454: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226502: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226598: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226616: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226638: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226643: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226681: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.226711: v4l2_ioctl <-__arm64_sys_ioctl
    v4l2src0:src-757     [000] ....   475.239906: csi_dmareq_rff_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-757     [000] ....   475.239911: csi_enable_int.isra.0.constprop.0 <-mx6s_start_streaming
    v4l2src0:src-757     [000] ....   475.239912: csi_enable.isra.0 <-mx6s_start_streaming
    v4l2src0:src-757     [000] ....   475.239915: mipi_csis_s_stream <-mx6s_vidioc_streamon
    v4l2src0:src-757     [000] ....   475.239918: mipi_csis_start_stream <-mipi_csis_s_stream
    v4l2src0:src-757     [000] ....   475.239934: mipi_csis_system_enable.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-757     [000] ....   475.239935: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_start_stream
    v4l2src0:src-757     [000] ....   475.286500: v4l2_poll <-do_sys_poll
          <idle>-0       [000] d.h1   475.306253: mx6s_csi_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.316834: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.325874: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.334628: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.340930: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.H1   475.347226: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.367961: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.374264: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] dNh1   475.380564: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.401295: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.407596: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] dNh1   475.413990: mipi_csis_irq_handler <-__handle_irq_event_percpu
    v4l2src0:src-757     [000] ....   475.431278: v4l2_poll <-do_sys_poll
  gst-launch-1.0-754     [003] ....   475.431560: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.431569: csi_dmareq_rff_disable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-754     [003] ....   475.431598: csi_enable.isra.0 <-mx6s_stop_streaming
  gst-launch-1.0-754     [003] ....   475.432126: mipi_csis_s_stream <-mx6s_vidioc_streamoff
          <idle>-0       [000] d.h1   475.434629: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.442374: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] d.h1   475.459524: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] dNh1   475.465934: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] dNh1   475.472325: mipi_csis_irq_handler <-__handle_irq_event_percpu
          <idle>-0       [000] dNh1   475.478714: mipi_csis_irq_handler <-__handle_irq_event_percpu
  gst-launch-1.0-754     [003] ....   475.515765: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-754     [003] ....   475.515768: mipi_csis_system_enable.isra.0 <-mipi_csis_s_stream
  gst-launch-1.0-754     [003] ....   475.515902: v4l2_ioctl <-__arm64_sys_ioctl
  gst-launch-1.0-754     [003] ....   475.518323: v4l2_release <-__fput
  gst-launch-1.0-754     [003] ....   475.518328: mx6s_csi_close <-v4l2_release
  gst-launch-1.0-754     [003] ....   475.518333: csi_dmareq_rff_disable.isra.0 <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.518335: csi_clk_disable <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.518344: mipi_csis_s_power <-mx6s_csi_close
  gst-launch-1.0-754     [003] ....   475.518354: mipi_csis_runtime_suspend <-pm_generic_runtime_suspend
  gst-launch-1.0-754     [003] ....   475.518355: mipi_csis_pm_suspend <-mipi_csis_runtime_suspend
  gst-launch-1.0-754     [003] ....   475.518357: mipi_csis_enable_interrupts.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.518358: mipi_csis_system_enable.isra.0 <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.518364: mipi_csis_clk_disable <-mipi_csis_pm_suspend
  gst-launch-1.0-754     [003] ....   475.518381: mx6s_csi_runtime_suspend <-pm_generic_runtime_suspend

I don't know why they are different when I enable the different resolutions.

I think maybe the issue is related to FIFO overflow Error.

I tried to find some discussion about that:

https://community.nxp.com/t5/i-MX-Processors/FIFO-Overflow-error-on-low-resolution/m-p/1154998

https://community.nxp.com/t5/i-MX-Processors/RX-fifo-overflow-on-MIPI-CSI2-i-MX8MQ/m-p/1087697?comme...

But there is no solution for imx8MM but imx8MQ because I cannot find a similar register on imx8MM to CSI_PHY_CTL_REG(0x30A7_0104) on imx8MQ.

And CSI_PHY_CTL_REG just can only disable lanes so I'm not sure that the solution is correct.

How could I understand the cause of FIFO overflow error?

Is there a better solution for imx8MM?

joanxie · ‎04-14-2022

how about unit test like：

“/unit_tests/V4L2/mx6s_v4l2_cap_drm.out ”？？

jerry_liu · ‎04-17-2022

Hi @joanxie ,

I tried to use mx6s_v4l2_cap_drm.out, but got an error.

root@edm-g-imx8mm:~# /unit_tests/V4L2/mx6s_v4l2_cap_drm.out -t 1000

---- Running < /unit_tests/V4L2/mx6s_v4l2_cap_drm.out > test ----

Found v4l2 capture device /dev/video0.
VIDIOC_S_PARM failed

Then I got the device list:

root@edm-g-imx8mm:~# /unit_tests/V4L2/mx6s_v4l2_cap_drm.out -l

---- Running < /unit_tests/V4L2/mx6s_v4l2_cap_drm.out > test ----


open video device /dev/video0
Found v4l2 capture device /dev/video0
pixelformat (output by camera): UYVY
CaptureMode=0, Width=1280, Height=720 30.000 fps
CaptureMode=1, Width=1280, Height=800 30.000 fps

joanxie · ‎04-18-2022

$ /unit_tests/V4L2/mx6s_v4l2_cap_drm.out -d /dev/video0 -fr 30 -m 4 -ow 1280 -oh 800 -of test.raw

try this command, you can change the parameter as your demands, you can use ./mx6s_cap_drm.out -help to get more detailed information

jerry_liu · ‎04-19-2022

Hi @joanxie

Yes, I tried again but it still returned the same error whether I tried what parameters I set. like below:

root@edm-g-imx8mm:~# /unit_tests/V4L2/mx6s_v4l2_cap_drm.out -d /dev/video0 -ow 1280 -oh 800 -of test.raw

---- Running < /unit_tests/V4L2/mx6s_v4l2_cap_drm.out > test ----

Found v4l2 capture device /dev/video0.
VIDIOC_S_PARM failed

jerry_liu · ‎03-29-2022

I tried to trace the csi function and I found it has an error in mipi_csis_irq_handler:

root@edm-g-imx8mm:/sys/kernel/debug/tracing# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:00.645651000
Setting pipeline to NULL ...
Freeing pipeline ...
root@edm-g-imx8mm:/sys/kernel/debug/tracing# cat trace | less
# tracer: function_graph
#
# CPU  DURATION                  FUNCTION CALLS
# |     |   |                     |   |   |   |
 2)               |  v4l2_open() {
 2)               |    mx6s_csi_open() {
 2)   1.125 us    |      mx6s_csi_runtime_resume();
 2)               |      mipi_csis_s_power() {
 2)               |        mipi_csis_runtime_resume() {
 2)               |          mipi_csis_pm_resume() {
 2) + 11.125 us   |            mipi_csis_clk_enable();
 2) + 17.125 us   |          }
 2) + 18.500 us   |        }
 2) + 24.375 us   |      }
 2) + 54.125 us   |    }
 2) + 66.125 us   |  }
 2)   8.625 us    |  v4l2_ioctl();
 2)               |  v4l2_release() {
 2)               |    mx6s_csi_close() {
 2)               |      mipi_csis_s_power() {
 2)               |        mipi_csis_runtime_suspend() {
 2)               |          mipi_csis_pm_suspend() {
 2)   1.125 us    |            mipi_csis_enable_interrupts.isra.0();
 2)   1.500 us    |            mipi_csis_system_enable.isra.0();
 2)   4.250 us    |            mipi_csis_clk_disable();
 2) + 11.500 us   |          }
 2) + 13.000 us   |        }
 2) + 21.125 us   |      }
 2)   0.625 us    |      mx6s_csi_runtime_suspend();
 2) + 34.000 us   |    }
 2) + 36.875 us   |  }
 2)               |  v4l2_open() {
 2)               |    mx6s_csi_open() {
 2)   1.125 us    |      mx6s_csi_runtime_resume();
 2)               |      mipi_csis_s_power() {
 2)               |        mipi_csis_runtime_resume() {
 2)               |          mipi_csis_pm_resume() {
 2) + 11.000 us   |            mipi_csis_clk_enable();
 2) + 16.750 us   |          }
 2) + 18.500 us   |        }
 2) + 23.750 us   |      }
 2) + 57.375 us   |    }
 2) + 68.625 us   |  }
 2)   8.375 us    |  v4l2_ioctl();
 2)   3.375 us    |  v4l2_ioctl();
 2)   1.875 us    |  v4l2_ioctl();
 2)   1.625 us    |  v4l2_ioctl();
 2)   1.375 us    |  v4l2_ioctl();
 2)   1.250 us    |  v4l2_ioctl();
 2)   1.000 us    |  v4l2_ioctl();
 2)   1.375 us    |  v4l2_ioctl();
 2)   1.000 us    |  v4l2_ioctl();
 2)   1.000 us    |  v4l2_ioctl();
 2)   1.625 us    |  v4l2_ioctl();
 2)   1.875 us    |  v4l2_ioctl();
 3)               |  v4l2_ioctl() {
 3)   2.500 us    |    mipi_csis_enum_mbus_code();
 3) + 26.875 us   |  }
 3)               |  v4l2_ioctl() {
 3)   1.000 us    |    mipi_csis_enum_mbus_code();
 3)   3.125 us    |  }
 3)   3.375 us    |  v4l2_ioctl();
 3)               |  v4l2_ioctl() {
 3)   2.375 us    |    mipi_csis_enum_framesizes();
 3)   7.375 us    |  }
 3)               |  v4l2_ioctl() {
 3)   0.875 us    |    mipi_csis_enum_frameintervals();
 3)   3.875 us    |  }
 3)               |  v4l2_ioctl() {
 3)   0.750 us    |    mipi_csis_enum_frameintervals();
 3)   2.625 us    |  }
 3)               |  v4l2_ioctl() {
 3)   0.875 us    |    mipi_csis_enum_framesizes();
 3)   4.125 us    |  }
 3)               |  v4l2_ioctl() {
 3)   0.625 us    |    mipi_csis_enum_frameintervals();
 3)   2.875 us    |  }
 3)               |  v4l2_ioctl() {
 3)   0.750 us    |    mipi_csis_enum_frameintervals();
 3)   2.750 us    |  }
 3)               |  v4l2_ioctl() {
 3)   1.250 us    |    mipi_csis_enum_framesizes();
 3)   3.750 us    |  }
 3)               |  v4l2_ioctl() {
 3)   4.000 us    |    mipi_csis_set_fmt();
 3) + 22.375 us   |  }
 3)               |  v4l2_ioctl() {
 3)   5.250 us    |    mipi_csis_set_fmt();
 3) + 35.000 us   |  }
 3)               |  v4l2_ioctl() {
 3)   1.375 us    |    mipi_csis_g_parm();
 3)   6.125 us    |  }
 3)   3.500 us    |  v4l2_ioctl();
 3)   1.375 us    |  v4l2_ioctl();
 3)   8.000 us    |  v4l2_ioctl();
 3)   2.250 us    |  v4l2_ioctl();
 3)   2.000 us    |  v4l2_ioctl();
 3)   1.625 us    |  v4l2_ioctl();
 3)   1.375 us    |  v4l2_ioctl();
 3)   2.000 us    |  v4l2_ioctl();
 3) # 7862.500 us |  v4l2_ioctl();
 3) + 15.625 us   |  v4l2_ioctl();
 3)   2.875 us    |  v4l2_ioctl();
 3)   1.750 us    |  v4l2_ioctl();
 3) + 38.750 us   |  v4l2_ioctl();
 3) + 10.250 us   |  v4l2_ioctl();
 3) + 11.875 us   |  v4l2_ioctl();
 3)   3.375 us    |  v4l2_ioctl();
 3) + 13.375 us   |  v4l2_ioctl();
 3)   3.500 us    |  v4l2_ioctl();
 3)               |  v4l2_ioctl() {
 3)               |    mipi_csis_s_stream() {
 3)               |      mipi_csis_start_stream() {
 3)   2.000 us    |        mipi_csis_system_enable.isra.0();
 3)   1.375 us    |        mipi_csis_enable_interrupts.isra.0();
 3) + 22.250 us   |      }
 0)   1.250 us    |  } /* mipi_csis_irq_handler */
 0)   1.250 us    |  mipi_csis_irq_handler();
 0)   1.250 us    |  mipi_csis_irq_handler();
 0)   1.125 us    |  mipi_csis_irq_handler();
 0)   1.125 us    |  mipi_csis_irq_handler();
 0)   1.125 us    |  mipi_csis_irq_handler();
 
 ...
 
 0)   1.375 us    |  mipi_csis_irq_handler();
 0)   1.500 us    |  mipi_csis_irq_handler();
 0)   1.375 us    |  mipi_csis_irq_handler();
 0)   2.125 us    |  mipi_csis_irq_handler();
 0)   1.500 us    |  mipi_csis_irq_handler();
 0)   1.375 us    |  mipi_csis_irq_handler();
 ------------------------------------------
 0)    <idle>-0    =>  gst-lau-892
 ------------------------------------------

 0)   2.250 us    |      mipi_csis_enable_interrupts.isra.0();
 0)   1.875 us    |      mipi_csis_system_enable.isra.0();
 0) * 86738.87 us |    } /* mipi_csis_s_stream */
 0) * 87064.87 us |  } /* v4l2_ioctl */
 0) ! 968.875 us  |  v4l2_ioctl();
 0)               |  v4l2_release() {
 0)               |    mx6s_csi_close() {
 0)               |      mipi_csis_s_power() {
 0)               |        mipi_csis_runtime_suspend() {
 0)               |          mipi_csis_pm_suspend() {
 0)   1.500 us    |            mipi_csis_enable_interrupts.isra.0();
 0)   1.750 us    |            mipi_csis_system_enable.isra.0();
 0)   8.250 us    |            mipi_csis_clk_disable();
 0) + 22.375 us   |          }
 0) + 24.625 us   |        }
 0) + 41.125 us   |      }
 0)   1.125 us    |      mx6s_csi_runtime_suspend();
 0) + 63.750 us   |    }
 0) + 74.250 us   |  }

So I print the error log in mipi_csis_irq_handler:

static irqreturn_t mipi_csis_irq_handler(int irq, void *dev_id)
{
	struct csi_state *state = dev_id;
	struct csis_pktbuf *pktbuf = &state->pkt_buf;
	unsigned long flags;
	u32 status;

	status = mipi_csis_read(state, MIPI_CSIS_INTSRC);

	spin_lock_irqsave(&state->slock, flags);

	if ((status & MIPI_CSIS_INTSRC_NON_IMAGE_DATA) && pktbuf->data) {
		u32 offset;

		if (status & MIPI_CSIS_INTSRC_EVEN)
			offset = MIPI_CSIS_PKTDATA_EVEN;
		else
			offset = MIPI_CSIS_PKTDATA_ODD;

		memcpy(pktbuf->data, state->regs + offset, pktbuf->len);
		pktbuf->data = NULL;
		rmb();
	}

	/* Update the event/error counters */
	if ((status & MIPI_CSIS_INTSRC_ERRORS) || debug) {
		int i;
		for (i = 0; i < MIPI_CSIS_NUM_EVENTS; i++) {
			if (!(status & state->events[i].mask))
				continue;
			state->events[i].counter++;
			printk("%s: %d\n",
				 state->events[i].name,
				 state->events[i].counter);
		}
		printk("status: %08x\n", status);
	}
	spin_unlock_irqrestore(&state->slock, flags);

	mipi_csis_write(state, MIPI_CSIS_INTSRC, status);
	return IRQ_HANDLED;
}

-----------------------------------------------------------------------------------------------------------

First, I enable 1280x800, I got the error when I sent "Ctrl + C" to close camera:

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:03.305730125
Setting pipeline to NULL ...
[ 8936.573147] FIFO Overflow Error: 1
[ 8936.576560] Frame Start: 1
[ 8936.579265] Frame End: 1
[ 8936.581797] status: 01100010
Total showed frames (95), playing for (0:00:03.305677000), fps (28.738).

Then I tried to enable 1280x800 again, I got the error log below that:

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
[   71.858138] FIFO Overflow Error: 1
[   71.861552] Frame Start: 1
[   71.864258] status: 01000010
[   71.867166] FIFO Overflow Error: 2
[   71.870568] status: 00000010
[   71.875955] FIFO Overflow Error: 3
[   71.879360] status: 00000010
[   71.882268] FIFO Overflow Error: 4
[   71.885673] status: 00000010
[   71.888569] FIFO Overflow Error: 5
[   71.891969] status: 00000010
[   71.909285] FIFO Overflow Error: 6
[   71.912686] status: 00000010
[   71.915577] FIFO Overflow Error: 7
[   71.918975] status: 00000010
[   71.921865] FIFO Overflow Error: 8
[   71.925264] status: 00000010
[   71.942623] FIFO Overflow Error: 9
[   71.946028] status: 00000010
[   71.948931] FIFO Overflow Error: 10
...

If I enable 1280x720, it can work and has no error log:

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=720 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:04.9 / 99:99:99.

jerry_liu · ‎03-29-2022

I use gstreamer to test our camera, below that:

Camera: MIPI speed=400M
CSI: mxc_mipi-csi 32e30000.mipi_csi: lanes: 4, hs_settle: 13, clk_settle: 2, wclk: 1, freq: 400000000

Res=1280x720 (it can work)

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=720 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:02.6 / 99:99:99.

Res: 1280x800 (it cannot work, no error log but it cannot preview any image.)

root@edm-g-imx8mm:~# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=800 ! imxvideoconvert_g2d ! fpsdisplaysink sync=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

I think it just cannot decode the MIPI data, and the problem is related clock frequency.

However, I don't know how to decide the better clock-frequency and how to decide the better camera's mipi speed.

Despite using the default clock-frequency 333M, it still has the same problem.

By the way, If I firstly enable 1280x800 for the camera, it can work! But it only can work the first time.

If I want to enable 1280x800 again, it cannot work and doesn't preview any image.

Then 1280x720 always can work whenever I enabled the camera.