airoha: an7583: add NPU nodes and enable kernel config

Add relevant nodes for NPU support for Airoha AN7583 and enable the
kernel config to enable support in the Airoha Ethernet driver.

NPU firmware is scheduled to be upstreamed to linux-firmware and will be
added once present upstream.

Signed-off-by: Christian Marangi <[email protected]>
(cherry picked from commit 8758b58f25dac29a9cbf60e153143bdc124e582c)

target/linux/airoha/an7583/config-6.6

@@ -242,6 +242,7 @@ CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEED_SG_DMA_LENGTH=y
 CONFIG_NET_AIROHA=y
 CONFIG_NET_AIROHA_FLOW_STATS=y
+CONFIG_NET_AIROHA_NPU=y
 CONFIG_NET_DEVLINK=y
 CONFIG_NET_DSA=y
 CONFIG_NET_DSA_MT7530=y

target/linux/airoha/dts/an7583-evb-emmc.dts

@@ -227,6 +227,10 @@
 	};
 };
 
+&npu {
+	status = "okay";
+};
+
 &eth {
 	status = "okay";
 	nvmem-cells = <&mac_factory_2c0000>;

target/linux/airoha/dts/an7583-evb.dts

@@ -84,6 +84,10 @@
 	status = "okay";
 };
 
+&npu {
+	status = "okay";
+};
+
 &eth {
 	status = "okay";
 };

target/linux/airoha/dts/an7583.dtsi

@@ -546,6 +546,30 @@
 			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		npu: npu@1e900000 {
+			compatible = "airoha,an7583-npu";
+			reg = <0x0 0x1e900000 0x0 0x313000>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 137 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			memory-region = <&npu_binary>;
+			memory-region-names = "binary";
+
+			status = "disabled";
+		};
+
 		pon_pcs: pcs@1fa08000 {
 			compatible = "airoha,an7583-pcs-pon";
 			reg = <0x0 0x1fa08000 0x0 0x1000>,
@@ -620,6 +644,8 @@
 			memory-region = <&qdma0_buf>, <&qdma1_buf>;
 			memory-region-names = "qdma0-buf", "qdma1-buf";
 
+			airoha,npu = <&npu>;
+
 			status = "disabled";
 
 			#address-cells = <1>;