Add common DTS overlay for the IMX-AUD-IO daughter board[1] which
connects to the base board through a PCIe X8 slot.

This board features a CS42888 codec providing 2 microphone inputs, 2
line inputs and 6 channels audio output capability.

[1]https://www.nxp.com/part/IMX-AUD-IO

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
 arch/arm64/boot/dts/freescale/Makefile        |  4 ++
 arch/arm64/boot/dts/freescale/imx-aud-io.dtso | 58 +++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx-aud-io.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 0a4dabac5de4..7258740bfa23 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -545,11 +545,15 @@ dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-evk-pcie0-ep.dtb
 imx95-19x19-evk-pcie0-ep-dtbs += imx95-19x19-evk.dtb imx-pcie0-ep.dtbo
 imx95-19x19-evk-pcie1-ep-dtbs += imx95-19x19-evk.dtb imx-pcie1-ep.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk-pcie0-ep.dtb imx95-19x19-evk-pcie1-ep.dtb
+imx95-19x19-evk-aud-io-dtbs += imx95-19x19-evk.dtb imx-aud-io.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk-aud-io.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx95-libra-rdk-fpsc.dtb
 
 dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-verdin-evk.dtb
 
 dtb-$(CONFIG_ARCH_MXC) += imx952-evk.dtb
+imx952-evk-aud-io-dtbs += imx952-evk.dtb imx-aud-io.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx952-evk-aud-io.dtb
 
 imx8mm-kontron-dl-dtbs			:= imx8mm-kontron-bl.dtb imx8mm-kontron-dl.dtbo
 imx8mm-kontron-bl-lte-dtbs		:= imx8mm-kontron-bl.dtb imx8mm-kontron-bl-lte.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx-aud-io.dtso b/arch/arm64/boot/dts/freescale/imx-aud-io.dtso
new file mode 100644
index 000000000000..77fd0aebd96b
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx-aud-io.dtso
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Common Device Tree for the IMX-AUD-IO daughter board[1].
+ * It connects to the baseboard through a PCIe X8 slot.
+ *
+ * [1]https://www.nxp.com/part/IMX-AUD-IO
+ *
+ * Copyright 2026 NXP
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	aud-io-sound-cs42888 {
+		compatible = "fsl,imx-audio-card";
+		model = "imx-cs42888";
+
+		pri-dai-link {
+			link-name = "cs42888";
+			format = "i2s";
+			fsl,mclk-equal-bclk;
+
+			codec {
+				sound-dai = <&audio_io_codec>;
+			};
+
+			cpu {
+				sound-dai = <&aud_io_cpu>;
+			};
+
+		};
+	};
+};
+
+&aud_io_i2c {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	audio_io_codec: codec@48 {
+		compatible = "cirrus,cs42888";
+		reg = <0x48>;
+		clocks = <&aud_io_conn 0>;
+		clock-names = "mclk";
+		VA-supply = <&aud_io_reg_5v>;
+		VD-supply = <&aud_io_reg_3v3>;
+		VLS-supply = <&aud_io_reg_1v8>;
+		VLC-supply = <&aud_io_reg_1v8>;
+		#sound-dai-cells = <0>;
+		reset-gpios = <&aud_io_conn 0 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&aud_io_cpu {
+	status = "okay";
+};
-- 
2.50.1