Red PWR LED is always on / not detected by the system

Hello debian-arm List,

I'm running debian on a raspberrypi 3 (image from https://raspi.debian.net) . I'd like to turn off the red LED but it doesn't work

Issue:

Red LED is always on

It seems like it is not detected as PWR LED instead, it is presented as mmc1::

ACT LED is detected correctly.

# ll /sys/class/leds/
total 0
lrwxrwxrwx 1 root root 0  7. Jul 22:44 ACT -> ../../devices/platform/leds/leds/ACT
lrwxrwxrwx 1 root root 0  7. Jul 22:44 mmc1:: -> ../../devices/platform/soc/3f300000.mmc/leds/mmc1::

The mmc1 directory also contains the files "brightness" and "trigger" with the "typical" contents of LEDs, but changing them has no impact.

Kernel:

uname -a
Linux user 5.10.0-15-arm64 #1 SMP Debian 5.10.120-1 (2022-06-09) aarch64 GNU/Linux

Expectation:

All LEDs are off by default incl. red LED
Red LED appears under /sys/class/leds/pwr
Red LED can be turned on and off by changing files "triggers" and "brightness"

Steps to reproduce:

Deploy 20220121_raspi_4_bullseye.img (64 Bit arm tested image bullseye)
boot (Raspi 3)