diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
index 37382e0..d4b8332 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
@@ -4,12 +4,9 @@
 
 / {
 	aliases {
-		mmc0 = &esdhc1;
-		mmc1 = &esdhc;
 		i2c0 = &i2c0;
 		i2c1 = &i2c3;
 		i2c2 = &i2c4;
-		rtc0 = &rtc;
 		ethernet2 = &enetc_port2;
 		ethernet3 = &enetc_port3;
 	};
@@ -265,11 +262,6 @@
 };
 #endif
 
-&i2c0 {
-	rtc: rtc@32 {
-	};
-};
-
 &fspi {
 	u-boot,dm-pre-reloc;
 	flash@0 {
@@ -310,6 +302,10 @@
 	status = "okay";
 };
 
+&sata {
+	status = "okay";
+};
+
 &soc {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts
index ba2e4de..7cd29ab 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var1.dts
@@ -8,7 +8,7 @@
  * None of the  four SerDes lanes are used by the module, instead they are
  * all led out to the carrier for customer use.
  *
- * Copyright (C) 2020 Michael Walle <michael@walle.cc>
+ * Copyright (C) 2021 Michael Walle <michael@walle.cc>
  *
  */
 
@@ -21,28 +21,17 @@
 	compatible = "kontron,sl28-var1", "kontron,sl28", "fsl,ls1028a";
 };
 
-&enetc_port0 {
-	status = "disabled";
-	/delete-property/ phy-handle;
-};
-
-&enetc_port1 {
-	phy-handle = <&phy0>;
-	phy-mode = "rgmii-id";
-	status = "okay";
-};
-
-/delete-node/ &phy0;
 &enetc_mdio_pf3 {
+	/* Delete unused phy node */
+	/delete-node/ ethernet-phy@5;
+
 	phy0: ethernet-phy@4 {
 		reg = <0x4>;
 		eee-broken-1000t;
 		eee-broken-100tx;
-
 		qca,clk-out-frequency = <125000000>;
 		qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
 		qca,keep-pll-enabled;
-
 		vddio-supply = <&vddio>;
 
 		vddio: vddio-regulator {
@@ -56,3 +45,15 @@
 		};
 	};
 };
+
+&enetc_port0 {
+	status = "disabled";
+	/* Delete the phy-handle to the old phy0 label */
+	/delete-property/ phy-handle;
+};
+
+&enetc_port1 {
+	phy-handle = <&phy0>;
+	phy-mode = "rgmii-id";
+	status = "okay";
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2-u-boot.dtsi
index 4e0ce3f..c010ea0 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2-u-boot.dtsi
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2-u-boot.dtsi
@@ -7,3 +7,11 @@
 		ethernet1 = &mscc_felix_port1;
 	};
 };
+
+&mscc_felix_port0 {
+	label = "gbe0";
+};
+
+&mscc_felix_port1 {
+	label = "gbe1";
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2.dts
index db80874..330e34f93 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2.dts
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var2.dts
@@ -2,10 +2,10 @@
 /*
  * Device Tree file for the Kontron SMARC-sAL28 board.
  *
- * This is for the network variant 2 which has no ethernet support in the
- * bootloader.
+ * This is for the network variant 2 which has two ethernet ports. These
+ * ports are connected to the internal switch.
  *
- * Copyright (C) 2020 Michael Walle <michael@walle.cc>
+ * Copyright (C) 2021 Michael Walle <michael@walle.cc>
  *
  */
 
@@ -17,8 +17,21 @@
 	compatible = "kontron,sl28-var2", "kontron,sl28", "fsl,ls1028a";
 };
 
+&enetc_mdio_pf3 {
+	phy1: ethernet-phy@4 {
+		reg = <0x4>;
+		eee-broken-1000t;
+		eee-broken-100tx;
+	};
+};
+
 &enetc_port0 {
 	status = "disabled";
+	/*
+	 * In the base device tree the PHY at address 5 was assigned for
+	 * this port. On this module this PHY is connected to a switch
+	 * port instead. Therefore, delete the phy-handle property here.
+	 */
 	/delete-property/ phy-handle;
 };
 
@@ -31,14 +44,16 @@
 };
 
 &mscc_felix_port0 {
-	label = "gbe0";
+	label = "swp0";
+	managed = "in-band-status";
 	phy-handle = <&phy0>;
 	phy-mode = "sgmii";
 	status = "okay";
 };
 
 &mscc_felix_port1 {
-	label = "gbe1";
+	label = "swp1";
+	managed = "in-band-status";
 	phy-handle = <&phy1>;
 	phy-mode = "sgmii";
 	status = "okay";
@@ -48,18 +63,3 @@
 	ethernet = <&enetc_port2>;
 	status = "okay";
 };
-
-/delete-node/ &phy0;
-&enetc_mdio_pf3 {
-	phy0: ethernet-phy@5 {
-		reg = <0x5>;
-		eee-broken-1000t;
-		eee-broken-100tx;
-	};
-
-	phy1: ethernet-phy@4 {
-		reg = <0x4>;
-		eee-broken-1000t;
-		eee-broken-100tx;
-	};
-};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
index 54d12ab..9b5e92f 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
@@ -5,7 +5,7 @@
  * This is for the network variant 4 which has two ethernet ports. It
  * extends the base and provides one more port connected via RGMII.
  *
- * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ * Copyright (C) 2021 Michael Walle <michael@walle.cc>
  *
  */
 
@@ -18,22 +18,14 @@
 	compatible = "kontron,sl28-var4", "kontron,sl28", "fsl,ls1028a";
 };
 
-&enetc_port1 {
-	phy-handle = <&phy1>;
-	phy-mode = "rgmii-id";
-	status = "okay";
-};
-
 &enetc_mdio_pf3 {
 	phy1: ethernet-phy@4 {
 		reg = <0x4>;
 		eee-broken-1000t;
 		eee-broken-100tx;
-
 		qca,clk-out-frequency = <125000000>;
 		qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
 		qca,keep-pll-enabled;
-
 		vddio-supply = <&vddio>;
 
 		vddio: vddio-regulator {
@@ -47,3 +39,9 @@
 		};
 	};
 };
+
+&enetc_port1 {
+	phy-handle = <&phy1>;
+	phy-mode = "rgmii-id";
+	status = "okay";
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
index 9ae70ba..ab713b4 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
@@ -2,23 +2,61 @@
 /*
  * Device Tree file for the Kontron SMARC-sAL28 board.
  *
- * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ * Copyright (C) 2021 Michael Walle <michael@walle.cc>
  *
  */
 
 /dts-v1/;
 #include "fsl-ls1028a.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "Kontron SMARC-sAL28";
 	compatible = "kontron,sl28", "fsl,ls1028a";
 
 	aliases {
+		crypto = &crypto;
 		serial0 = &duart0;
 		serial1 = &duart1;
 		serial2 = &lpuart1;
 		spi0 = &fspi;
 		spi1 = &dspi2;
+		mmc0 = &esdhc1;
+		mmc1 = &esdhc;
+		rtc0 = &rtc;
+		rtc1 = &ftm_alarm0;
+	};
+
+	buttons0 {
+		compatible = "gpio-keys";
+
+		power-button {
+			interrupts-extended = <&sl28cpld_intc
+					       4 IRQ_TYPE_EDGE_BOTH>;
+			linux,code = <KEY_POWER>;
+			label = "Power";
+		};
+
+		sleep-button {
+			interrupts-extended = <&sl28cpld_intc
+					       5 IRQ_TYPE_EDGE_BOTH>;
+			linux,code = <KEY_SLEEP>;
+			label = "Sleep";
+		};
+	};
+
+	buttons1 {
+		compatible = "gpio-keys-polled";
+		poll-interval = <200>;
+
+		lid-switch {
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			gpios = <&sl28cpld_gpio3 4 GPIO_ACTIVE_LOW>;
+			label = "Lid";
+		};
 	};
 
 	chosen {
@@ -26,24 +64,37 @@
 	};
 };
 
+&can0 {
+	status = "okay";
+};
+
 &dspi2 {
 	status = "okay";
 };
 
+&duart0 {
+	status = "okay";
+};
+
+&duart1 {
+	status = "okay";
+};
+
+&enetc_mdio_pf3 {
+	phy0: ethernet-phy@5 {
+		reg = <0x5>;
+		eee-broken-1000t;
+		eee-broken-100tx;
+	};
+};
+
 &enetc_port0 {
 	phy-handle = <&phy0>;
 	phy-mode = "sgmii";
+	managed = "in-band-status";
 	status = "okay";
 };
 
-&enetc_port2 {
-	status = "disabled";
-};
-
-&enetc_port3 {
-	status = "disabled";
-};
-
 &esdhc {
 	sd-uhs-sdr104;
 	sd-uhs-sdr50;
@@ -63,8 +114,6 @@
 	status = "okay";
 
 	flash@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
 		compatible = "jedec,spi-nor";
 		m25p,fast-read;
 		spi-max-frequency = <133000000>;
@@ -72,17 +121,167 @@
 		/* The following setting enables 1-1-2 (CMD-ADDR-DATA) mode */
 		spi-rx-bus-width = <2>; /* 2 SPI Rx lines */
 		spi-tx-bus-width = <1>; /* 1 SPI Tx line */
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				reg = <0x000000 0x010000>;
+				label = "rcw";
+				read-only;
+			};
+
+			partition@10000 {
+				reg = <0x010000 0x1d0000>;
+				label = "failsafe bootloader";
+				read-only;
+			};
+
+			partition@200000 {
+				reg = <0x200000 0x010000>;
+				label = "configuration store";
+			};
+
+			partition@210000 {
+				reg = <0x210000 0x1d0000>;
+				label = "bootloader";
+			};
+
+			partition@3e0000 {
+				reg = <0x3e0000 0x020000>;
+				label = "bootloader environment";
+			};
+		};
 	};
 };
 
+&gpio1 {
+	gpio-line-names =
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "TDO", "TCK",
+		"", "", "", "", "", "", "", "";
+};
+
+&gpio2 {
+	gpio-line-names =
+		"", "", "", "", "", "", "TMS", "TDI",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
 &i2c0 {
 	status = "okay";
 
-	rtc@32 {
+	rtc: rtc@32 {
 		compatible = "microcrystal,rv8803";
 		reg = <0x32>;
 	};
 
+	sl28cpld@4a {
+		compatible = "kontron,sl28cpld";
+		reg = <0x4a>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		watchdog@4 {
+			compatible = "kontron,sl28cpld-wdt";
+			reg = <0x4>;
+			kontron,assert-wdt-timeout-pin;
+		};
+
+		hwmon@b {
+			compatible = "kontron,sl28cpld-fan";
+			reg = <0xb>;
+		};
+
+		sl28cpld_pwm0: pwm@c {
+			compatible = "kontron,sl28cpld-pwm";
+			reg = <0xc>;
+			#pwm-cells = <2>;
+		};
+
+		sl28cpld_pwm1: pwm@e {
+			compatible = "kontron,sl28cpld-pwm";
+			reg = <0xe>;
+			#pwm-cells = <2>;
+		};
+
+		sl28cpld_gpio0: gpio@10 {
+			compatible = "kontron,sl28cpld-gpio";
+			reg = <0x10>;
+			interrupts-extended = <&gpio2 6
+					       IRQ_TYPE_EDGE_FALLING>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-line-names =
+				"GPIO0_CAM0_PWR_N", "GPIO1_CAM1_PWR_N",
+				"GPIO2_CAM0_RST_N", "GPIO3_CAM1_RST_N",
+				"GPIO4_HDA_RST_N", "GPIO5_PWM_OUT",
+				"GPIO6_TACHIN", "GPIO7";
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		sl28cpld_gpio1: gpio@15 {
+			compatible = "kontron,sl28cpld-gpio";
+			reg = <0x15>;
+			interrupts-extended = <&gpio2 6
+					       IRQ_TYPE_EDGE_FALLING>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-line-names =
+				"GPIO8", "GPIO9", "GPIO10", "GPIO11",
+				"", "", "", "";
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		sl28cpld_gpio2: gpio@1a {
+			compatible = "kontron,sl28cpld-gpo";
+			reg = <0x1a>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-line-names =
+				"LCD0 voltage enable",
+				"LCD0 backlight enable",
+				"eMMC reset", "LVDS bridge reset",
+				"LVDS bridge power-down",
+				"SDIO power enable",
+				"", "";
+		};
+
+		sl28cpld_gpio3: gpio@1b {
+			compatible = "kontron,sl28cpld-gpi";
+			reg = <0x1b>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-line-names =
+				"Power button", "Force recovery", "Sleep",
+				"Battery low", "Lid state", "Charging",
+				"Charger present", "";
+		};
+
+		sl28cpld_intc: interrupt-controller@1c {
+			compatible = "kontron,sl28cpld-intc";
+			reg = <0x1c>;
+			interrupts-extended = <&gpio2 6
+					       IRQ_TYPE_EDGE_FALLING>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
+
 	eeprom@50 {
 		compatible = "atmel,24c32";
 		reg = <0x50>;
@@ -107,32 +306,3 @@
 &lpuart1 {
 	status = "okay";
 };
-
-&enetc_mdio_pf3 {
-	status = "okay";
-	phy0: ethernet-phy@5 {
-		reg = <0x5>;
-		eee-broken-1000t;
-		eee-broken-100tx;
-	};
-};
-
-&sata {
-	status = "okay";
-};
-
-&duart0 {
-	status = "okay";
-};
-
-&duart1 {
-	status = "okay";
-};
-
-&usb0 {
-	status = "okay";
-};
-
-&usb1 {
-	status = "okay";
-};