Memtool Bus error on i.mx8qm

[DRAVE]

root@imx8qmmek:/# ./memtool 0x56190000 1
E
Reading 0x1 count starting at address 0x56190000

0x56190000: 21344410

root@imx8qmmek:/# ./memtool 0x56191000 1
E
Reading 0x1 count starting at address 0x56191000

[ 143.705965] audit: type=1701 audit(1647563780.720:5): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=958 comm="memtool" exe="/memtool" sig=7 res=1
Bus error

root@imx8qmmek:/# ./memtool 0x56191400 1
E
Reading 0x1 count starting at address 0x56191400

0x56191400: 005F595F

root@imx8qmmek:/# ./memtool 0x56191800 1
E
Reading 0x1 count starting at address 0x56191800

[ 194.249485] audit: type=1701 audit(1647563831.264:6): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=960 comm="memtool" exe="/memtool" sig=7 res=1
Bus error

Ask for help

[Zhiming_Liu]

Hi @DRAVE 

Please share the register name you want to read.

[DRAVE]

yocto kernel lf-5.15.32-2.0.0 , Display Controller (DC) Subsystem