diff --git a/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml
index a24286e4def6..36f2393fa406 100644
--- a/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/nxp,s32g2-siul2-pinctrl.yaml
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-# Copyright 2022 NXP
+# Copyright 2022, 2026 NXP
 %YAML 1.2
 ---
 $id: http://devicetree.org/schemas/pinctrl/nxp,s32g2-siul2-pinctrl.yaml#
@@ -17,8 +17,10 @@ description: |
     SIUL2_0 @ 0x4009c000
     SIUL2_1 @ 0x44010000
 
-  Every SIUL2 region has multiple register types, and here only MSCR and
-  IMCR registers need to be revealed for kernel to configure pinmux.
+  Every SIUL2 region has multiple register types. MSCR and IMCR registers
+  need to be revealed for kernel to configure pinmux. PGPDO and PGPDI
+  registers are used for GPIO output/input operations. EIRQ registers
+  are used for external interrupt configuration.
 
   Please note that some register indexes are reserved in S32G2, such as
   MSCR102-MSCR111, MSCR123-MSCR143, IMCR84-IMCR118 and IMCR398-IMCR429.
@@ -29,14 +31,22 @@ properties:
       - nxp,s32g2-siul2-pinctrl
 
   reg:
+    minItems: 6
     description: |
-      A list of MSCR/IMCR register regions to be reserved.
+      A list of MSCR/IMCR/PGPDO/PGPDI/EIRQ register regions to be reserved.
       - MSCR (Multiplexed Signal Configuration Register)
         An MSCR register can configure the associated pin as either a GPIO pin
         or a function output pin depends on the selected signal source.
       - IMCR (Input Multiplexed Signal Configuration Register)
         An IMCR register can configure the associated pin as function input
         pin depends on the selected signal source.
+      - PGPDO (Parallel GPIO Pad Data Out Register)
+        A PGPDO register is used to set the output value of a GPIO pin.
+      - PGPDI (Parallel GPIO Pad Data In Register)
+        A PGPDI register is used to read the input value of a GPIO pin.
+      - EIRQ (External Interrupt Request)
+        EIRQ registers are used to configure and manage external interrupts.
+
     items:
       - description: MSCR registers group 0 in SIUL2_0
       - description: MSCR registers group 1 in SIUL2_1
@@ -44,6 +54,28 @@ properties:
       - description: IMCR registers group 0 in SIUL2_0
       - description: IMCR registers group 1 in SIUL2_1
       - description: IMCR registers group 2 in SIUL2_1
+      - description: PGPDO registers in SIUL2_0
+      - description: PGPDI registers in SIUL2_0
+      - description: PGPDO registers in SIUL2_1
+      - description: PGPDI registers in SIUL2_1
+      - description: EIRQ registers in SIUL2_1
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-ranges:
+    minItems: 1
+    maxItems: 4
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
 
 patternProperties:
   '-pins$':
@@ -86,11 +118,38 @@ required:
   - compatible
   - reg
 
+oneOf:
+  - description: Legacy pinctrl-only node
+    properties:
+      reg:
+        maxItems: 6
+
+      gpio-controller: false
+      "#gpio-cells": false
+      gpio-ranges: false
+      interrupt-controller: false
+      "#interrupt-cells": false
+      interrupts: false
+
+  - description: Pinctrl node with GPIO and external interrupt support
+    required:
+      - gpio-controller
+      - "#gpio-cells"
+      - gpio-ranges
+      - interrupt-controller
+      - "#interrupt-cells"
+      - interrupts
+    properties:
+      reg:
+        minItems: 11
+
 additionalProperties: false
 
 examples:
   - |
-    pinctrl@4009c240 {
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    pinctrl: pinctrl@4009c240 {
         compatible = "nxp,s32g2-siul2-pinctrl";
 
               /* MSCR0-MSCR101 registers on siul2_0 */
@@ -104,7 +163,26 @@ examples:
               /* IMCR119-IMCR397 registers on siul2_1 */
               <0x44010c1c 0x45c>,
               /* IMCR430-IMCR495 registers on siul2_1 */
-              <0x440110f8 0x108>;
+              <0x440110f8 0x108>,
+              /* PGPDO registers on siul2_0 */
+              <0x4009d700 0x10>,
+              /* PGPDI registers on siul2_0 */
+              <0x4009d740 0x10>,
+              /* PGPDO registers on siul2_1 */
+              <0x44011700 0x18>,
+              /* PGPDI registers on siul2_1 */
+              <0x44011740 0x18>,
+              /* EIRQ registers on siul2_1 */
+              <0x44010010 0x34>;
+
+        gpio-controller;
+        #gpio-cells = <2>;
+        gpio-ranges = <&pinctrl 0 0 102>,
+                      <&pinctrl 112 112 79>;
+
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupts = <GIC_SPI 210 IRQ_TYPE_LEVEL_HIGH>;
 
         llce-can0-pins {
             llce-can0-grp0 {