Tool/software:
In order to reduce the startup time.
We disable initial init script and systemd and
create an init script called myinit.sh and ln -s myinit.sh init and add v4l2 into the script.
It will be very appreciate that if you can help me analyze the reasons why v4l2 and the driver failed to load successfully.
below is the context in myinit.sh
#!/bin/sh
export PATH=/usr/bin:/sbin:/bin
export LD_LIBRARY_PATH=/lib:/usr/lib:$LD_LIBRARY_PATH
mount -t proc proc /proc
mount -n -t sysfs none /sys
mount -n -t tmpfs none /run
insmod /lib/modules/6.6.58-ti-01497-ga7758da17c28-dirty/kernel/drivers/rpmsg/rpmsg_char.ko
modprobe videobuf2-common
modprobe videobuf2-v4l2
modprobe v4l2_fwnode
modprobe v4l2_cci
modprobe v4l2-cci
# 基础框架层
modprobe i2c-atr
insmod /lib/modules/6.6.58-ti-01497-ga7758da17c28-dirty/kernel/drivers/media/i2c/ds90ub960.ko
insmod /lib/modules/6.6.58-ti-01497-ga7758da17c28-dirty/kernel/drivers/media/i2c/ds90ub953.ko
insmod /lib/modules/6.6.58-ti-01497-ga7758da17c28-dirty/kernel/drivers/media/i2c/imx219.ko
echo "Hello world!!!!!!"
exec /bin/sh
/bin/sh
but when i power on start. It seems that the v4l2 was not insert into the project. here is the log:
[ 2.628647] devtmpfs: mounted
[ 2.632259] Freeing unused kernel memory: 2496K
[ 2.636861] Run /sbin/init as init process
[ 2.841165] mc: Linux media interface: v0.10
[ 2.863777] videodev: Linux video capture interface: v2.00
[ 2.910912] ds90ub960 4-0030: supply vddio not found, using dummy regulator
[ 3.045877] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer
[ 3.061416] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer/i20
[ 3.080192] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30
[ 3.095704] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer/i2c/sensor@10: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0r
[ 3.122886] ds90ub953 4-0044: Found ub953 rev/mask 0x20
[ 3.130300] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer/i2c/sensor@10: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0r
[ 3.149572] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer/i20
[ 3.168448] /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0/serializer/i2c/sensor@10: Fixed dependency cycle(s) with /bus@f0000/i2c@20020000/i2c-switch@71/i2c@1/deser@30/links/link@0r
[ 3.195089] imx219 5-0010: supply VANA not found, using dummy regulator
[ 3.201864] imx219 5-0010: supply VDIG not found, using dummy regulator
[ 3.208507] imx219 5-0010: supply VDDL not found, using dummy regulator
Starting systemd-udevd version 255.13^
Hello world!!!!!!
sh: cannot set terminal process group (-1): Inappropriate ioctl for device
sh: no job control in this shell
sh-5.2# Collecting audit messages is enabled.
[ 3.343341] audit: type=1335 audit(2.908:2): pid=109 uid=0 auid=4294967295 tty=(none) ses=4294967295 subj=kernel comm="systemd-journal" exe="/usr/lib/systemd/systemd-journald" nl-mcgrp=1 op=disconnect1
Failed to acquire cgroup root path: No medium found
sh-5.2#
sh-5.2# media-ctl -p
Failed to enumerate /dev/media0 (-2)
sh-5.2# ls /dev/
autofs mmcblk0boot1 ptmx tty16 tty46 ttyS8
bus mmcblk0p1 ptp0 tty17 tty47 ttyS9
console mmcblk0p2 ptyp0 tty18 tty48 ttyp0
cpu_dma_latency mmcblk0rpmb ptyp1 tty19 tty49 ttyp1
dma_heap mmcblk1 ptyp2 tty2 tty5 ttyp2
full mmcblk1p1 ptyp3 tty20 tty50 ttyp3
gpiochip0 mmcblk1p2 ptyp4 tty21 tty51 ttyp4
gpiochip1 mtd0 ptyp5 tty22 tty52 ttyp5
gpiochip2 mtd0ro ptyp6 tty23 tty53 ttyp6
gpiochip3 mtd1 ptyp7 tty24 tty54 ttyp7
gpiochip4 mtd1ro ptyp8 tty25 tty55 ttyp8
gpiochip5 mtd2 ptyp9 tty26 tty56 ttyp9
gpiochip6 mtd2ro ptypa tty27 tty57 ttypa
hwrng mtd3 ptypb tty28 tty58 ttypb
i2c-0 mtd3ro ptypc tty29 tty59 ttypc
i2c-1 mtd4 ptypd tty3 tty6 ttypd
i2c-2 mtd4ro ptype tty30 tty60 ttype
i2c-3 mtd5 ptypf tty31 tty61 ttypf
i2c-4 mtd5ro random tty32 tty62 ubi_ctrl
i2c-5 mtd6 rtc1 tty33 tty63 urandom
kmsg mtd6ro snapshot tty34 tty7 vcs
loop-control mtdblock0 snd tty35 tty8 vcs1
loop0 mtdblock1 tee0 tty36 tty9 vcsa
loop1 mtdblock2 teepriv0 tty37 ttyS0 vcsa1
loop2 mtdblock3 tty tty38 ttyS1 vcsu
loop3 mtdblock4 tty0 tty39 ttyS10 vcsu1
loop4 mtdblock5 tty1 tty4 ttyS11 vfio
loop5 mtdblock6 tty10 tty40 ttyS2 vga_arbiter
loop6 net tty11 tty41 ttyS3 zero
loop7 null tty12 tty42 ttyS4
mem pfsm-1-0x48 tty13 tty43 ttyS5
mmcblk0 port tty14 tty44 ttyS6
mmcblk0boot0 pps0 tty15 tty45 ttyS7
sh-5.2#
