diff --git a/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/swift/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@300/si7021a20@20.conf b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/swift/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@300/si7021a20@20.conf
new file mode 100644
index 0000000..c8a7290
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/swift/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@300/si7021a20@20.conf
@@ -0,0 +1,5 @@
+LABEL_temp1 = "ambient2"
+WARNHI_temp1 = "25000"
+WARNLO_temp1 = "0"
+CRITHI_temp1 = "35000"
+CRITLO_temp1 = "0"
diff --git a/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
index c5d75a7..dfd992b 100644
--- a/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon_%.bbappend
@@ -26,6 +26,7 @@
                bus@1e78a000/i2c-bus@440/tmp275@48 \
                bus@1e78a000/i2c-bus@300/tmp275@48 \
                bus@1e78a000/i2c-bus@300/dps310@76 \
+               bus@1e78a000/i2c-bus@300/si7021a20@20 \
                "
 
 ITEMSFMT = "ahb/apb/{0}.conf"