diff --git a/device/community/device-fairphone-fp4/81-libssc-fairphone-fp4.rules b/device/community/device-fairphone-fp4/81-libssc-fairphone-fp4.rules
new file mode 100644
index 000000000..2bad47308
--- /dev/null
+++ b/device/community/device-fairphone-fp4/81-libssc-fairphone-fp4.rules
@@ -0,0 +1,3 @@
+# iio-sensor-proxy with libssc: accelerometer mount matrix
+
+SUBSYSTEM=="misc", KERNEL=="fastrpc-*", ENV{ACCEL_MOUNT_MATRIX}+="-1, 0, 0; 0, -1, 0; 0, 0, -1"
diff --git a/device/community/device-fairphone-fp4/APKBUILD b/device/community/device-fairphone-fp4/APKBUILD
index 1bd39bddb..8651c5c83 100644
--- a/device/community/device-fairphone-fp4/APKBUILD
+++ b/device/community/device-fairphone-fp4/APKBUILD
@@ -2,8 +2,8 @@
 # Maintainer: Luca Weiss <luca@lucaweiss.eu>
 pkgname=device-fairphone-fp4
 pkgdesc="Fairphone 4"
-pkgver=2
-pkgrel=5
+pkgver=3
+pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
 arch="aarch64"
@@ -14,10 +14,13 @@ depends="
 	firmware-fairphone-fp4-adsp
 	firmware-fairphone-fp4-bluetooth
 	firmware-fairphone-fp4-cdsp
+	firmware-fairphone-fp4-hexagonfs
 	firmware-fairphone-fp4-ipa
 	firmware-fairphone-fp4-modem
 	firmware-fairphone-fp4-wlan
 	firmware-qcom-adreno-a630
+	hexagonrpcd
+	hexagonrpcd-openrc
 	linux-firmware-ath10k
 	linux-postmarketos-qcom-sm6350
 	make-dynpart-mappings
@@ -35,10 +38,13 @@ depends="
 	tqftpserv-openrc
 "
 makedepends="devicepkg-dev"
+replaces="hexagonrpcd-openrc"
 install="$pkgname.post-install $pkgname.post-upgrade"
 source="
+	81-libssc-fairphone-fp4.rules
 	90-feedbackd-aw8695.rules
 	deviceinfo
+	hexagonrpcd.confd
 	modules-initfs
 	"
 
@@ -49,12 +55,18 @@ build() {
 package() {
 	devicepkg_package $startdir $pkgname
 
+	install -Dm644 "$srcdir"/81-libssc-fairphone-fp4.rules \
+		"$pkgdir"/usr/lib/udev/rules.d/81-libssc-fairphone-fp4.rules
 	install -Dm644 "$srcdir"/90-feedbackd-aw8695.rules \
 		"$pkgdir"/usr/lib/udev/rules.d/90-feedbackd-aw8695.rules
+	install -Dm644 "$srcdir"/hexagonrpcd.confd \
+		"$pkgdir"/etc/conf.d/hexagonrpcd-adsp-sensorspd
 }
 
 sha512sums="
+2c16ba75e0077b2b1eaefa4c73b287475505a1aeb291ec29316d41cc094277320f9d2aaabfd91eb1dc0f488ab2d61a94faef16e7afe0f1e226779113761b9a37  81-libssc-fairphone-fp4.rules
 2974ccc172bf1299daeb0bc746879b3a1db1fbc3a2b163a02a6554fed6ed9f733144bcf976cd2441c5664d496dcce3ae943f4314c653470dc07dda0de5ad632b  90-feedbackd-aw8695.rules
 9549f105f865d230e7b67819c96b7e06a5ed4d5808f083099a408934ffbacdb412984b861f6756fa4fde94b51e6a268b8d2ce9fed6f13ee3e8041bb96492310a  deviceinfo
+6a3d620f2cc60308a62ff651ffb00a5ee1f092131cca9d33b6afd61c8a372a3fd7d46540162213593107e0943b33f3f0119d003d43dcd06dbde757390a6c1729  hexagonrpcd.confd
 52bb7ed829caa4dcff9728bd6e3cdf118b3c7ee7dfe90df0d4e6422dd67bf3258ae2a4d2dc7599da4182fbd8eb47a0e1d20c58198dc17f2bf178b8f01a8887f7  modules-initfs
 "
diff --git a/device/community/device-fairphone-fp4/device-fairphone-fp4.post-install b/device/community/device-fairphone-fp4/device-fairphone-fp4.post-install
index 515f702fe..e5687cc9a 100644
--- a/device/community/device-fairphone-fp4/device-fairphone-fp4.post-install
+++ b/device/community/device-fairphone-fp4/device-fairphone-fp4.post-install
@@ -1,4 +1,5 @@
 #!/bin/sh
+rc-update add hexagonrpcd-adsp-sensorspd default
 rc-update add pd-mapper boot
 rc-update add qbootctl default
 rc-update add tqftpserv boot
diff --git a/device/community/device-fairphone-fp4/hexagonrpcd.confd b/device/community/device-fairphone-fp4/hexagonrpcd.confd
new file mode 100644
index 000000000..cb091740d
--- /dev/null
+++ b/device/community/device-fairphone-fp4/hexagonrpcd.confd
@@ -0,0 +1,2 @@
+# Fairphone 4 specific hexagonrpcd firmware directory
+hexagonrpcd_fw_dir="/usr/share/qcom/sm7225/Fairphone/fairphone4"