diff --git a/board/czechlight/clearfog/czechlight-clearfog.dts b/board/czechlight/clearfog/czechlight-clearfog.dts
index 211d348..296600e 100644
--- a/board/czechlight/clearfog/czechlight-clearfog.dts
+++ b/board/czechlight/clearfog/czechlight-clearfog.dts
@@ -65,7 +65,7 @@
 };
 
 &spi1 {
-	cs-gpios = <0>, <&gpio0 22 GPIO_ACTIVE_HIGH>, <0>;
+	cs-gpios = <0>, <&gpio0 22 GPIO_ACTIVE_HIGH>, <0>, <&gpio1 16 GPIO_ACTIVE_HIGH>;
 
 	max14830: max14830@2 {
 		compatible = "maxim,max14830";
@@ -77,6 +77,25 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 		spi-max-frequency = <26000000>;
+
+		gpio-line-names =
+			"EVM-GPIO0",
+			"",
+			"",
+			"EVM-LED1",
+			"EVM-GPIO4",
+			"",
+			"",
+			"EVM-LED2",
+			"EVM-GPIO8",
+			"",
+			"",
+			"EVM-LED3",
+			"EVM-GPIO12",
+			"",
+			"",
+			"EVM-LED4"
+			;
 	};
 
 	gpio_spi_chips: gpio@1 {
@@ -92,5 +111,51 @@
 		microchip,irq-mirror;
 		microchip,irq-open-drain;
 		spi-max-frequency = <10000000>;
+
+		gpio-line-names =
+			"OCM-HS_out",
+			"OCM-HS_in",
+			"1-A2",
+			"1-A3",
+			"1-A4",
+			"1-A5",
+			"1-A6",
+			"1-A7",
+
+			"1-B0",
+			"1-B1",
+			"1-B2",
+			"1-B3",
+			"1-B4",
+			"1-B5",
+			"1-B6",
+			"1-B7",
+
+			"2-A0",
+			"2-A1",
+			"2-A2",
+			"2-A3",
+			"2-A4",
+			"2-A5",
+			"2-A6",
+			"2-A7",
+
+			"2-B0",
+			"2-B1",
+			"2-B2",
+			"2-B3",
+			"2-B4",
+			"2-B5",
+			"2-B6",
+			"2-B7"
+			;
+	};
+
+	spidev@3 {
+		compatible = "spidev";
+		reg = <3>;
+		spi-max-frequency = <12000000>;
+		spi-cpol;
+		linux,spi-wdelay = /bits/ 16 <3>;
 	};
 };
diff --git a/board/czechlight/clearfog/linux.fragment b/board/czechlight/clearfog/linux.fragment
index 83cd006..43a563b 100644
--- a/board/czechlight/clearfog/linux.fragment
+++ b/board/czechlight/clearfog/linux.fragment
@@ -20,3 +20,6 @@
 
 # SPI GPIO expander
 CONFIG_PINCTRL_MCP23S08=y
+
+# For the Lumentum OCM
+CONFIG_SPI_SPIDEV=y
diff --git a/board/czechlight/clearfog/overlay/etc/rauc/system.conf b/board/czechlight/clearfog/overlay/etc/rauc/system.conf
index 8fc94d4..eac1494 100644
--- a/board/czechlight/clearfog/overlay/etc/rauc/system.conf
+++ b/board/czechlight/clearfog/overlay/etc/rauc/system.conf
@@ -14,6 +14,7 @@
 device=/dev/mmcblk0p2
 type=ext4
 parent=rootfs.0
+ignore-checksum=true
 
 [slot.rootfs.1]
 device=/dev/mmcblk0p3
@@ -24,3 +25,4 @@
 device=/dev/mmcblk0p4
 type=ext4
 parent=rootfs.1
+ignore-checksum=true