diff --git a/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi b/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
index 5342091..9084eaf 100644
--- a/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
+++ b/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
@@ -5,8 +5,6 @@
 };
 
 #undef CLEARFOG_PMBUS_BITBANG
-#define IFACE_V_1_0 // v1.0, a first prototype
-//#undef IFACE_V_1_0 // v1.0.1, the second iteration
 
 / {
 	clocks {
@@ -182,6 +180,7 @@
 				"EDFA2_PUMP_TEMP_A";
 		};
 
+		// FIXME: this hogs both .1 and .2 chips' #6 pin...
 		i2c_xor_ready {
 			gpio-hog;
 			gpios = <6 GPIO_ACTIVE_HIGH>;