$ cat /sys/dev/char/226:0/device/uevent
DRIVER=v3d
OF_NAME=v3d
OF_FULLNAME=/v3dbus/v3d@7ec04000
OF_COMPATIBLE_0=brcm,2711-v3d
OF_COMPATIBLE_N=1
MODALIAS=of:Nv3dT(null)Cbrcm,2711-v3d

cat /sys/dev/char/226\:1/device/uevent
DRIVER=vc4-drm
OF_NAME=gpu
OF_FULLNAME=/gpu
OF_COMPATIBLE_0=brcm,bcm2711-vc5
OF_COMPATIBLE_N=1
MODALIAS=of:NgpuT(null)Cbrcm,bcm2711-vc5

$ cat /sys/dev/char/226\:128/device/uevent
DRIVER=v3d
OF_NAME=v3d
OF_FULLNAME=/v3dbus/v3d@7ec04000
OF_COMPATIBLE_0=brcm,2711-v3d
OF_COMPATIBLE_N=1
MODALIAS=of:Nv3dT(null)Cbrcm,2711-v3d