Hi NXP,
When I use Maxim 9286 cameras on IMX8QM Android Platform, I found that the ISI Channel[0] busy problem. so the video0 of Maxim 9286 can't work. the kernel the following error:
[ 10.791356] [VPU Encoder] enable mu for core[0]
[ 10.803557] [VPU Encoder] vpu encoder core[0] firmware version is 1.2.2
[ 10.829160] type=1400 audit(1578477204.112:56): avc: denied { write } for pid=2074 comm="Binder:2074_2" name="uevent" dev="sysfs" ino=21342 scontext=u:r:vold:s0 tcontext=u:object_r:sysfs_block_devices:s0 tclass=file permissive=0
[ 10.849572] type=1400 audit(1578477205.020:551): avc: denied { read } for pid=2160 comm="HwBinder:2160_1" name="u:object_r:ffs_prop:s0" dev="tmpfs" ino=8864 scontext=u:r:hal_usb_impl:s0 tcontext=u:object_r:ffs_prop:s0 tclass=file permissive=0
[ 10.877862] YYJ ADD test 1 hpd status=1 cable connected
[ 10.878431] (null): mxc_isi_capture_open: ISI channel[0] is busy
[ 10.910499] i.mx8-hdp 56268000.hdmi: 0,ff,ff,ff,ff,ff,ff,0
[ 10.916271] YYJ ADD test 1 hpd status=1 cable connected
[ 10.948157] i.mx8-hdp 56268000.hdmi: 0,ff,ff,ff,ff,ff,ff,0
[ 10.954184] YYJ ADD test 1 hpd status=1 cable connected
[ 10.986147] i.mx8-hdp 56268000.hdmi: 0,ff,ff,ff,ff,ff,ff,0
[ 11.751903] [drm] phy_cfg_hdp() num_lanes: 4, mode:1920x1080p60, color depth: 8-bit, encoding: 1
[ 11.760905] [drm] Pixel clock frequency (148500 kHz) is supported in this color depth (8-bit). Settings found in row 2
[ 11.771656] [drm] Character clock frequency: 148500 kHz.
[ 11.777013] [drm] VCO frequency (2970000 kHz) is supported. Settings found in row 25
[ 11.799982] [drm] CDN_API_General_Write_Register_blocking LANES_CONFIG ret = 0
[ 11.869260] android_work: sent uevent USB_STATE=CONNECTED
[ 11.890724] configfs-gadget gadget: high-speed config #1: b
[ 11.907410] android_work: sent uevent USB_STATE=CONFIGURED
[ 11.956148] capability: warning: `main' uses 32-bit capabilities (legacy support in use)
[ 12.921310] init: processing action (vendor.all.system_server.start=1) from (/vendor/etc/init/hw/init.freescale.rc:112)
Any help to solve this problem will be highly appreciated.
Best Regards
