missing omap_mux folder

[sckn]

Hi everyone,
I installed Arch linux BBB- e-MMC. I need pin mux operation but I can't find this folder.

I read,
this topic viewtopic.php?f=28&t=2629 and
this topic viewtopic.php?f=28&t=3988

I try
$this->bbcode_second_pass_code('', 'mount -t debugfs debugfs /sys/kernel/debug')
returned
$this->bbcode_second_pass_code('', 'mount: debugfs is already mounted or /sys/kernel/debug busy
debugfs is already mounted on /sys/kernel/debug
')
message.

List of debug folder
$this->bbcode_second_pass_code('', '[root@alarm debug]# ls -all /sys/kernel/debug/
total 0
drwx------ 25 root root 0 Dec 31 1969 .
drwxr-xr-x 6 root root 0 Jan 1 2000 ..
drwxr-xr-x 3 root root 0 Dec 31 1969 asoc
drwxr-xr-x 2 root root 0 Dec 31 1969 atmel_mxt_ts
drwxr-xr-x 2 root root 0 Dec 31 1969 aufs
drwxr-xr-x 33 root root 0 Dec 31 1969 bdi
drwxr-xr-x 4 root root 0 Dec 31 1969 dri
drwxr-xr-x 2 root root 0 Dec 31 1969 f2fs
-r--r--r-- 1 root root 0 Dec 31 1969 gpio
drwxr-xr-x 3 root root 0 Dec 31 1969 hid
drwxr-xr-x 2 root root 0 Dec 31 1969 iio
drwxr-xr-x 2 root root 0 Dec 31 1969 kprobes
drwxr-xr-x 2 root root 0 Dec 31 1969 memblock
drwxr-xr-x 2 root root 0 Dec 31 1969 mmc0
drwxr-xr-x 3 root root 0 Dec 31 1969 mmc1
drwxr-xr-x 2 root root 0 Dec 31 1969 musb-hdrc.0.auto
drwxr-xr-x 2 root root 0 Dec 31 1969 musb-hdrc.1.auto
drwxr-xr-x 3 root root 0 Dec 31 1969 pinctrl
drwxr-xr-x 8 root root 0 Dec 31 1969 pm_debug
-r--r--r-- 1 root root 0 Dec 31 1969 pwm
drwxr-xr-x 3 root root 0 Dec 31 1969 regmap
drwxr-xr-x 11 root root 0 Dec 31 1969 regulator
drwxr-xr-x 2 root root 0 Dec 31 1969 remoteproc
-rw-r--r-- 1 root root 0 Dec 31 1969 sched_features
-r--r--r-- 1 root root 0 Dec 31 1969 suspend_stats
drwxr-xr-x 5 root root 0 Dec 31 1969 tracing
drwxr-xr-x 2 root root 0 Dec 31 1969 ubi
drwxr-xr-x 3 root root 0 Dec 31 1969 usb
drwxr-xr-x 2 root root 0 Dec 31 1969 virtio-ports
-r--r--r-- 1 root root 0 Dec 31 1969 wakeup_sources
')

What can I do?

Thank you.
Best regards.