diff --git a/dts/bindings/gpio/nxp,pcal6408a.yaml b/dts/bindings/gpio/nxp,pcal6408a.yaml
index 9f101c2826b..4acf3816147 100644
--- a/dts/bindings/gpio/nxp,pcal6408a.yaml
+++ b/dts/bindings/gpio/nxp,pcal6408a.yaml
@@ -1,30 +1,14 @@
 # Copyright (c) 2021 Nordic Semiconductor ASA
+# Copyright (c) 2023 SILA Embedded Solutions GmbH
 # SPDX-License-Identifier: Apache-2.0
 
 description: PCAL6408A 8-bit I2C-based I/O expander
 
 compatible: "nxp,pcal6408a"
 
-include: [i2c-device.yaml, gpio-controller.yaml]
+include: nxp,pcal64xxa-base.yaml
 
 properties:
   ngpios:
     required: true
     const: 8
-
-  int-gpios:
-    type: phandle-array
-    description: |
-      GPIO connected to the controller INT pin. This pin is active-low.
-
-  reset-gpios:
-    type: phandle-array
-    description: |
-      GPIO connected to the controller RESET pin. This pin is active-low.
-
-  "#gpio-cells":
-    const: 2
-
-gpio-cells:
-  - pin
-  - flags
diff --git a/dts/bindings/gpio/nxp,pcal6416a.yaml b/dts/bindings/gpio/nxp,pcal6416a.yaml
new file mode 100644
index 00000000000..7717ca83830
--- /dev/null
+++ b/dts/bindings/gpio/nxp,pcal6416a.yaml
@@ -0,0 +1,13 @@
+# Copyright (c) 2023 SILA Embedded Solutions GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+description: PCAL6416A 16-bit I2C-based I/O expander
+
+compatible: "nxp,pcal6416a"
+
+include: nxp,pcal64xxa-base.yaml
+
+properties:
+  ngpios:
+    required: true
+    const: 16
diff --git a/dts/bindings/gpio/nxp,pcal64xxa-base.yaml b/dts/bindings/gpio/nxp,pcal64xxa-base.yaml
new file mode 100644
index 00000000000..fabe8268339
--- /dev/null
+++ b/dts/bindings/gpio/nxp,pcal64xxa-base.yaml
@@ -0,0 +1,23 @@
+# Copyright (c) 2021 Nordic Semiconductor ASA
+# Copyright (c) 2023 SILA Embedded Solutions GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+include: [i2c-device.yaml, gpio-controller.yaml]
+
+properties:
+  int-gpios:
+    type: phandle-array
+    description: |
+      GPIO connected to the controller INT pin. This pin is active-low.
+
+  reset-gpios:
+    type: phandle-array
+    description: |
+      GPIO connected to the controller RESET pin. This pin is active-low.
+
+  "#gpio-cells":
+    const: 2
+
+gpio-cells:
+  - pin
+  - flags