diff --git a/src/arm64/qcom/msm8916-samsung-gt5-common.dtsi b/src/arm64/qcom/msm8916-samsung-gt5-common.dtsi
index c19cf20..fbd2caf 100644
--- a/src/arm64/qcom/msm8916-samsung-gt5-common.dtsi
+++ b/src/arm64/qcom/msm8916-samsung-gt5-common.dtsi
@@ -3,9 +3,12 @@
 /dts-v1/;
 
 #include "msm8916-pm8916.dtsi"
+#include "msm8916-modem-qdsp6.dtsi"
+
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/sound/apq8016-lpass.h>
 
 / {
 	aliases {
@@ -65,25 +68,6 @@
 	};
 };
 
-&blsp_i2c4 {
-	status = "okay";
-
-	fuelgauge@36 {
-		compatible = "maxim,max77849-battery";
-		reg = <0x36>;
-
-		maxim,rsns-microohm = <10000>;
-		maxim,over-heat-temp = <600>;
-		maxim,over-volt = <4400>;
-
-		interrupt-parent = <&tlmm>;
-		interrupts = <121 IRQ_TYPE_EDGE_FALLING>;
-
-		pinctrl-0 = <&fuelgauge_int_default>;
-		pinctrl-names = "default";
-	};
-};
-
 &blsp_i2c2 {
 	status = "okay";
 
@@ -112,10 +96,52 @@
 	};
 };
 
+&blsp_i2c4 {
+	status = "okay";
+
+	fuelgauge@36 {
+		compatible = "maxim,max77849-battery";
+		reg = <0x36>;
+
+		maxim,rsns-microohm = <10000>;
+		maxim,over-heat-temp = <600>;
+		maxim,over-volt = <4400>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <121 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&fuelgauge_int_default>;
+		pinctrl-names = "default";
+	};
+};
+
 &blsp_uart2 {
 	status = "okay";
 };
 
+/*
+ * For some reason the speaker amplifier is connected to the second SD line
+ * (MI2S_2_D1) instead of the first (MI2S_2_D0). This must be configured in the
+ * device tree, otherwise audio will seemingly play fine on the wrong SD line
+ * but the speaker stays silent.
+ *
+ * When routing audio via QDSP6 (the default) the &lpass node is reserved and
+ * the definitions from &q6afedai are used. When the modem is disabled audio can
+ * be alternatively routed directly to the LPASS hardware with reduced latency.
+ * The definitions for &lpass are here for completeness to simplify changing the
+ * setup with minor changes to the DT (either manually or with DT overlays).
+ */
+&lpass {
+	dai-link@3 {
+		reg = <MI2S_QUATERNARY>;
+		qcom,playback-sd-lines = <1>;
+	};
+};
+
+&mpss_mem {
+	reg = <0x0 0x86800000 0x0 0x5400000>;
+};
+
 &pm8916_resin {
 	linux,code = <KEY_VOLUMEDOWN>;
 	status = "okay";
@@ -133,6 +159,13 @@
 	status = "okay";
 };
 
+&q6afedai {
+	dai@22 {
+		reg = <QUATERNARY_MI2S_RX>;
+		qcom,sd-lines = <1>;
+	};
+};
+
 &sdhc_1 {
 	status = "okay";
 };
@@ -147,6 +180,27 @@
 	status = "okay";
 };
 
+&sound {
+	audio-routing =
+		"AMIC1", "MIC BIAS External1",
+		"AMIC2", "MIC BIAS Internal2",
+		"AMIC3", "MIC BIAS External1";
+
+	sound_link_backend2: backend2-dai-link {
+		link-name = "Quaternary MI2S";
+
+		cpu {
+			sound-dai = <&q6afedai QUATERNARY_MI2S_RX>;
+		};
+		platform {
+			sound-dai = <&q6routing>;
+		};
+		codec {
+			sound-dai = <&speaker_codec>;
+		};
+	};
+};
+
 &usb {
 	dr_mode = "peripheral";
 	extcon = <&pm8916_usbin>;