[PATCH v2] arm64: dts: airoha: en7581: Add more nodes to EN7581 SoC evaluation board

[Lorenzo Bianconi]

Introduce the following nodes to EN7581 SoC and EN7581 evaluation board:
- clock controller
- rng controller
- pinctrl
- i2c controllers
- spi nand controller

Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
Changes in v2:
- Fix dtschema warnings
- Fix i2c nodes generic name
- Fix commit log
- Link to v1: https://lore.kernel.org/r/20250201-en7581-dts-spi-pinctrl-v1-1-aaa4a9dfc4a6@kernel.org
---
 arch/arm64/boot/dts/airoha/en7581-evb.dts |  8 +++
 arch/arm64/boot/dts/airoha/en7581.dtsi    | 90 +++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+)

diff --git a/arch/arm64/boot/dts/airoha/en7581-evb.dts b/arch/arm64/boot/dts/airoha/en7581-evb.dts
index cf58e43dd5b21dbf4f64e305a4b4a2daee100858..1126da4b795f5d5df9725ec4d75cd9353b011710 100644
--- a/arch/arm64/boot/dts/airoha/en7581-evb.dts
+++ b/arch/arm64/boot/dts/airoha/en7581-evb.dts
@@ -24,3 +24,11 @@ memory at 80000000 {
 		reg = <0x0 0x80000000 0x2 0x00000000>;
 	};
 };
+
+&i2c0 {
+	status = "okay";
+};
+
+&snfi {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/airoha/en7581.dtsi b/arch/arm64/boot/dts/airoha/en7581.dtsi
index 55eb1762fb11364877695960f5a2d3e42caf8611..8e3c53edce2e40103e825b3123d54e2c9f1e8638 100644
--- a/arch/arm64/boot/dts/airoha/en7581.dtsi
+++ b/arch/arm64/boot/dts/airoha/en7581.dtsi
@@ -2,6 +2,8 @@
 
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/en7523-clk.h>
+#include <dt-bindings/reset/airoha,en7581-reset.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -122,6 +124,12 @@ timer {
 			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
 	};
 
+	clk20m: clock-20000000 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <20000000>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <2>;
@@ -150,5 +158,87 @@ uart1: serial at 1fbf0000 {
 			interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
 			clock-frequency = <1843200>;
 		};
+
+		scuclk: clock-controller at 1fb00000 {
+			compatible = "airoha,en7581-scu";
+			reg = <0x0 0x1fb00000 0x0 0x970>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+		};
+
+		rng at 1faa1000 {
+			compatible = "airoha,en7581-trng";
+			reg = <0x0 0x1faa1000 0x0 0xc04>;
+			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		system-controller at 1fbf0200 {
+			compatible = "airoha,en7581-gpio-sysctl", "syscon",
+				     "simple-mfd";
+			reg = <0x0 0x1fbf0200 0x0 0xc0>;
+
+			en7581_pinctrl: pinctrl {
+				compatible = "airoha,en7581-pinctrl";
+
+				interrupt-parent = <&gic>;
+				interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+
+				gpio-controller;
+				#gpio-cells = <2>;
+
+				interrupt-controller;
+				#interrupt-cells = <2>;
+			};
+		};
+
+		i2c0: i2c at 1fbf8000 {
+			compatible = "mediatek,mt7621-i2c";
+			reg = <0x0 0x1fbf8000 0x0 0x100>;
+
+			resets = <&scuclk EN7581_I2C2_RST>;
+
+			clocks = <&clk20m>;
+			clock-frequency = <100000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "disabled";
+		};
+
+		i2c1: i2c at 1fbf8100 {
+			compatible = "mediatek,mt7621-i2c";
+			reg = <0x0 0x1fbf8100 0x0 0x100>;
+
+			resets = <&scuclk EN7581_I2C_MASTER_RST>;
+
+			clocks = <&clk20m>;
+			clock-frequency = <100000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "disabled";
+		};
+
+		snfi: spi at 1fa10000 {
+			compatible = "airoha,en7581-snand";
+			reg = <0x0 0x1fa10000 0x0 0x140>,
+			      <0x0 0x1fa11000 0x0 0x160>;
+
+			clocks = <&scuclk EN7523_CLK_SPI>;
+			clock-names = "spi";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "disabled";
+
+			spi_nand: nand at 0 {
+				compatible = "spi-nand";
+				reg = <0>;
+				spi-max-frequency = <50000000>;
+				spi-tx-bus-width = <1>;
+				spi-rx-bus-width = <2>;
+			};
+		};
 	};
 };

---
base-commit: 7605336e9d136c14c94482ce7385de783f2f748e
change-id: 20250201-en7581-dts-spi-pinctrl-4160b825ca9d

Best regards,
-- 
Lorenzo Bianconi <lorenzo at kernel.org>