diff --git a/board/czechlight/clearfog/czechlight-clearfog.dts b/board/czechlight/clearfog/czechlight-clearfog.dts
index 490b8c6..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";
@@ -113,8 +113,8 @@
 		spi-max-frequency = <10000000>;
 
 		gpio-line-names =
-			"1-A0",
-			"1-A1",
+			"OCM-HS_out",
+			"OCM-HS_in",
 			"1-A2",
 			"1-A3",
 			"1-A4",
@@ -150,4 +150,12 @@
 			"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