realtek: rtl9303: enable PSE on Hasivo S600WP-5GT-2SX-SE

Wire the HS104 controller (0x0d) on the PSE i2c-gpio bus and attach the
four PoE PHYs (lan1-4) via PHY_C45_PSE; lan5 is not PoE. Add the STC8 LED
MCU (0x4d) with per-port PoE LED triggers, and pull the HS104 PSE and STC8
kmods into the image.

Signed-off-by: Carlo Szelinsky <github@szelinsky.de>
Link: https://github.com/openwrt/openwrt/pull/22245
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>

target/linux/realtek/dts/rtl9303_hasivo_s600wp-5gt-2sx-se.dts

@@ -22,6 +22,9 @@
 		led-running = &led_sys;
 		led-upgrade = &led_sys;
 		label-mac-device = &ethernet0;
+		i2c0 = &i2c_scl23_sda22;
+		i2c1 = &i2c_sfp0;
+		i2c2 = &i2c_sfp1;
 	};
 
 	chosen {
@@ -81,11 +84,7 @@
 			    (RTL93XX_LED_SET_NONE)>;
 	};
 
-	/*
+	/* I2C bus to the on-board HS104 PSE controller (PoE) and STC8 LED MCU. */
-	 * TODO: I2C bus to the on-board HS104 PSE controller (PoE).
-	 * Defined here for documentation/future use; currently unused
-	 * because PSE/PoE support for this board is not yet wired up.
-	 */
 	i2c_scl23_sda22: i2c-scl23-sda22 {
 		compatible = "i2c-gpio";
 		#address-cells = <1>;
@@ -93,6 +92,90 @@
 
 		scl-gpios = <&gpio0 23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 		sda-gpios = <&gpio0 22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		clock-frequency = <100000>;
+
+		pse0: ethernet-pse@d {
+			compatible = "hasivo,hs104";
+			reg = <0x0d>;
+			poll-interval-ms = <500>;
+			status = "okay";
+
+			pse-pis {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				pse0_pi0: pse-pi@0 {
+					reg = <0>;
+					#pse-cells = <0>;
+				};
+				pse0_pi1: pse-pi@1 {
+					reg = <1>;
+					#pse-cells = <0>;
+				};
+				pse0_pi2: pse-pi@2 {
+					reg = <2>;
+					#pse-cells = <0>;
+				};
+				pse0_pi3: pse-pi@3 {
+					reg = <3>;
+					#pse-cells = <0>;
+				};
+			};
+		};
+
+		stc8: stc8@4d {
+			compatible = "hasivo,stc8-mfd", "syscon";
+			reg = <0x4d>;
+			#address-cells = <2>;
+			#size-cells = <0>;
+			hasivo,execute-bit = <0x40>;
+			hasivo,execute-bit-registers = <0x01 0x02>;
+			status = "okay";
+
+			led_lan1_poe: led@1,0 {
+				compatible = "register-bit-led";
+				reg = <0x01 0x00>;
+				mask = <0x08>;
+				color = <LED_COLOR_ID_ORANGE>;
+				function = "poe";
+				function-enumerator = <1>;
+				linux,default-trigger = "pse-0-000d:port0:delivering";
+				default-state = "off";
+			};
+
+			led_lan2_poe: led@1,1 {
+				compatible = "register-bit-led";
+				reg = <0x01 0x01>;
+				mask = <0x04>;
+				color = <LED_COLOR_ID_ORANGE>;
+				function = "poe";
+				function-enumerator = <2>;
+				linux,default-trigger = "pse-0-000d:port1:delivering";
+				default-state = "off";
+			};
+
+			led_lan3_poe: led@1,2 {
+				compatible = "register-bit-led";
+				reg = <0x01 0x02>;
+				mask = <0x02>;
+				color = <LED_COLOR_ID_ORANGE>;
+				function = "poe";
+				function-enumerator = <3>;
+				linux,default-trigger = "pse-0-000d:port2:delivering";
+				default-state = "off";
+			};
+
+			led_lan4_poe: led@1,3 {
+				compatible = "register-bit-led";
+				reg = <0x01 0x03>;
+				mask = <0x01>;
+				color = <LED_COLOR_ID_ORANGE>;
+				function = "poe";
+				function-enumerator = <4>;
+				linux,default-trigger = "pse-0-000d:port3:delivering";
+				default-state = "off";
+			};
+		};
 	};
 
 	i2c_sfp0: i2c-sfp0 {
@@ -226,10 +309,10 @@
 
 &mdio_bus0 {
 	/* External RTL8221B PHYs */
-	PHY_C45(0, 1)
+	PHY_C45_PSE(0, 1, pse0_pi0)
-	PHY_C45(8, 2)
+	PHY_C45_PSE(8, 2, pse0_pi1)
-	PHY_C45(16, 3)
+	PHY_C45_PSE(16, 3, pse0_pi2)
-	PHY_C45(20, 4)
+	PHY_C45_PSE(20, 4, pse0_pi3)
 };
 
 &mdio_bus1 {

target/linux/realtek/image/rtl930x.mk

@@ -76,6 +76,7 @@ define Device/hasivo_s600wp-5gt-2sx-se
   SOC := rtl9303
   DEVICE_VENDOR := Hasivo
   DEVICE_MODEL := S600WP-5GT-2SX-SE
+  DEVICE_PACKAGES := kmod-pse-hasivo-hs104 kmod-mfd-hasivo-stc8
   IMAGE_SIZE := 12288k
   $(Device/kernel-lzma)
 endef