diff --git a/projects/RPi/filesystem/usr/lib/udev/rules.d/80-alsa-preallocsize.rules b/projects/RPi/filesystem/usr/lib/udev/rules.d/80-alsa-preallocsize.rules
new file mode 100644
index 0000000000..364294325c
--- /dev/null
+++ b/projects/RPi/filesystem/usr/lib/udev/rules.d/80-alsa-preallocsize.rules
@@ -0,0 +1,3 @@
+ACTION=="add", SUBSYSTEM=="sound", KERNEL=="pcmC*", ATTRS{id}=="vc4hdmi*", \
+  ENV{.snd_card}="$id", \
+  RUN+="/bin/sh -c 'echo 1280 > /proc/asound/$env{.snd_card}/pcm0p/sub0/prealloc'"