dts: i3c: npcx: add target mode property and port configuration

As title.

Signed-off-by: Alvis Sun <yfsun@nuvoton.com>

dts/arm/nuvoton/npcx/npcx4.dtsi

@@ -388,6 +388,7 @@
 			status = "disabled";
 			#address-cells = <3>;
 			#size-cells = <0>;
+			instance-id = <0x00>;
 		};
 
 		i3c1: i3c@400f2000 {
@@ -413,6 +414,7 @@
 			status = "disabled";
 			#address-cells = <3>;
 			#size-cells = <0>;
+			instance-id = <0x10>;
 		};
 
 		i3c2: i3c@400f4000 {
@@ -438,6 +440,7 @@
 			status = "disabled";
 			#address-cells = <3>;
 			#size-cells = <0>;
+			instance-id = <0x20>;
 		};
 	};
 

dts/bindings/i3c/nuvoton,npcx-i3c.yaml

@@ -29,6 +29,8 @@ description: |
        */
       i3c-scl-hz = <12500000>;
       i3c-od-scl-hz = <4170000>;
+
+      bcr = <0x67>; /* Set for controller mode */
     };
 
 compatible: "nuvoton,npcx-i3c"
@@ -50,3 +52,54 @@ properties:
     description: |
       Open Drain Frequency for the I3C controller. When undefined, use
       the controller default or as specified by the I3C specification.
+
+  instance-id:
+    required: true
+    type: int
+    description: |
+      Instance ID of the device, used to specify port number.
+      Bit[7:4] module id.
+      Bit[3:0] port id.
+
+  secondary:
+    type: boolean
+    description: Initialized as a secondary controller.
+
+  static-address:
+    type: int
+    description: |
+      Target static address.
+
+  tgt-pid:
+    type: array
+    description: |
+      Target 48-bit Provisioned ID.
+      array[0]: PID[47:33] MIPI manufacturer ID.
+                PID[32] ID type selector (i'b1 ramdom value, 1'b0 vendor fixed).
+      array[1]: PID[31:0] Random value or vendor fixed value.
+
+  bcr:
+    required: true
+    type: int
+    description: |
+      Bus Characteristics Register, used for bus enumeration with ENTDAA and
+      determine device role and capabilities of the device on the bus.
+
+  dcr:
+    type: int
+    description: |
+      Device Characteristics Register, used for bus enumeration with ENTDAA.
+
+  maximum-write:
+    type: int
+    default: 4095
+    description: |
+      Maximum number of bytes that I3C controller may write to I3C target per message.
+      Range: 8 to 4095.
+
+  maximum-read:
+    type: int
+    default: 4095
+    description: |
+      Maximum number of bytes that I3C controller may read from to I3C target per message.
+      Range: 8 to 4095.