IMX8MP ISP in Ubuntu

khang_letruong — Tue, 22 Mar 2022 16:10:12 GMT

Dear Community,

I am testing ISP for a pair of custom sensors in iMX8MP with the Ubuntu image bitbake from i.MX_Desktop_POC_GA_Docs.

The ISP service seems to run at startup :

[ 7.409180] imx296: loading out-of-tree module taints kernel. [ 7.410456] imx296 1-001a: Probing ... [ 7.415278] imx296 1-001a: Sync. mode : MASTER [ 7.456138] imx296 1-001a: Sensor found : IMX296LQ [ 7.463991] imx296 1-001a: Camera is probed [ 7.465044] imx296 2-0036: Probing ... [ 7.465675] imx296 2-0036: Sync. mode : SLAVE [ 7.520584] imx296 2-0036: Sensor found : IMX296LQ [ 7.528596] imx296 2-0036: Camera is probed [ 7.637952] mx8-img-md: Registered sensor subdevice: imx296 2-0036 (1) [ 7.637961] mx8-img-md: Registered sensor subdevice: imx296 1-001a (2) [ 7.637968] mx8-img-md: created link [imx296 1-001a] => [mxc-mipi-csi2.0] [ 7.637975] mx8-img-md: created link [imx296 2-0036] => [mxc-mipi-csi2.1] [ 7.689069] enter viv_isp_init_module [ 7.689491] enter isp_hw_probe [ 7.689603] vvcam isp driver registered [ 7.705030] enter isp_hw_probe [ 7.705147] vvcam isp driver registered

But there's no /dev/videoX populated, only v4l-subdevY :

user@imx8mpevk:~$ ls /dev/ | egrep 'video|v4l-subdev|media' media0 v4l-subdev0 v4l-subdev1 v4l-subdev2 v4l-subdev3

The modules are well loaded as well :

user@imx8mpevk:~$ lsmod Module Size Used by fsl_jr_uio 20480 0 caam_jr 200704 0 caamkeyblob_desc 20480 1 caam_jr caamhash_desc 16384 1 caam_jr caamalg_desc 45056 1 caam_jr crypto_engine 16384 1 caam_jr rng_core 24576 1 caam_jr authenc 16384 1 caam_jr libdes 24576 1 caam_jr crct10dif_ce 20480 1 vvcam_isp 73728 0 vvcam_dwe 28672 0 imx8_media_dev 24576 0 imx296 40960 2 caam 28672 1 caam_jr secvio 20480 0 error 24576 7 caamalg_desc,secvio,caamkeyblob_desc,caamhash_desc,caam,caam_jr,fsl_jr_uio flexcan 40960 0 can_dev 36864 1 flexcan iptable_nat 16384 0 nf_nat 45056 1 iptable_nat nf_conntrack 143360 1 nf_nat nf_defrag_ipv6 24576 1 nf_conntrack nf_defrag_ipv4 16384 1 nf_conntrack libcrc32c 16384 2 nf_conntrack,nf_nat iptable_mangle 16384 0 iptable_filter 16384 0 ip_tables 32768 3 iptable_filter,iptable_nat,iptable_mangle x_tables 49152 3 iptable_filter,ip_tables,iptable_mangle

Have you observed similar issue, please ?

Thanks in advance and best regards,
Khang

Re: IMX8MP ISP in Ubuntu

khang_letruong — Wed, 23 Mar 2022 07:04:53 GMT

Looks like I found the root cause : my custom sensor's .drv file is missing in the default ISP recipe.

i.MX ProcessorsのトピックIMX8MP ISP in Ubuntu

IMX8MP ISP in Ubuntu

Re: IMX8MP ISP in Ubuntu