Comment # 2 on bug 1218780 from Vasilis Liaskovitis

I see the same issue (slightly newer opensuse:tumbleweed:20240111 TW image):

localhost:~ # rpm -q kernel-default
kernel-default-6.6.10-1.1.aarch64

localhost:~ # rpm -q raspberrypi-firmware
raspberrypi-firmware-2023.11.21-1.1.noarch

/boot/efi/config.txt has same settings as mentioned in comment#1

We have software rendering indeed:

localhost:~ # glxinfo -B | grep -i renderer
OpenGL renderer string: llvmpipe (LLVM 17.0.6, 128 bits)

v3d does not load.

localhost:~ # lsmod | grep -i vc4
vc4                   319488  6
drm_display_helper    212992  1 vc4
cec                    86016  2 vc4,drm_display_helper
drm_dma_helper         24576  3 vc4
snd_soc_core          409600  2 vc4,snd_soc_hdmi_codec
localhost:~ # lsmod | grep -i v3d

I haven't spotted something with drm.debug=0x1e drm.debug=0xe yet, but I can
post those. 

I thought simpledrm may interfere with v3d bringup, but adding
"initcall_blacklist=simpledrm_platform_driver_init" to kernel command line did
not change anything. 

Perhaps it is a dt/firmware issue then.

localhost:~ # cat /etc/os-release
NAME="openSUSE Tumbleweed"
# VERSION="20240111"
ID="opensuse-tumbleweed"
ID_LIKE="opensuse suse"
VERSION_ID="20240111"
PRETTY_NAME="openSUSE Tumbleweed"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:tumbleweed:20240111"
BUG_REPORT_URL="https://bugzilla.opensuse.org"
SUPPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://www.opensuse.org"
DOCUMENTATION_URL="https://en.opensuse.org/Portal:Tumbleweed"
LOGO="distributor-logo-Tumbleweed"