diff --git a/src/mainboard/google/volteer/variants/drobit/Makefile.inc b/src/mainboard/google/volteer/variants/drobit/Makefile.inc
index 3454eec965..4919fcd4e1 100644
--- a/src/mainboard/google/volteer/variants/drobit/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/drobit/Makefile.inc
@@ -6,3 +6,5 @@ bootblock-y += gpio.c
 
 ramstage-y += gpio.c
 ramstage-y += ramstage.c
+
+ramstage-y += variant.c
diff --git a/src/mainboard/google/volteer/variants/drobit/overridetree.cb b/src/mainboard/google/volteer/variants/drobit/overridetree.cb
index a31017e83d..08b95f85a6 100644
--- a/src/mainboard/google/volteer/variants/drobit/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/drobit/overridetree.cb
@@ -1,3 +1,10 @@
+fw_config
+	field AUDIO_CODEC_SOURCE 41 43
+		option AUDIO_CODEC_UNPROVISIONED 0
+		option AUDIO_CODEC_ALC5682 1
+		option AUDIO_CODEC_ALC5682I_VS 2
+	end
+end
 chip soc/intel/tigerlake
 	register "DdiPort1Hpd" = "0"
 	register "DdiPort2Hpd" = "0"
@@ -124,7 +131,7 @@ chip soc/intel/tigerlake
 
 		device ref i2c0 on
 			chip drivers/i2c/generic
-				register "hid" = ""10EC5682""
+				# register "hid" is set in variant.c because of FW_CONFIG
 				register "name" = ""RT58""
 				register "desc" = ""Headset Codec""
 				register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_BOTH(GPP_F8)"
@@ -133,7 +140,7 @@ chip soc/intel/tigerlake
 				register "property_list[0].type" = "ACPI_DP_TYPE_INTEGER"
 				register "property_list[0].name" = ""realtek,jd-src""
 				register "property_list[0].integer" = "1"
-				device i2c 1a on end
+				device i2c 1a alias audio_codec on end
 			end
 			chip drivers/i2c/max98373
 				register "vmon_slot_no" = "0"
diff --git a/src/mainboard/google/volteer/variants/drobit/variant.c b/src/mainboard/google/volteer/variants/drobit/variant.c
new file mode 100644
index 0000000000..3effcdf4d8
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/drobit/variant.c
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <fw_config.h>
+#include <drivers/i2c/hid/chip.h>
+#include <device/device.h>
+
+static void audio_codec_update(void)
+{
+	struct device *codec = DEV_PTR(audio_codec);
+	struct drivers_i2c_generic_config *config;
+
+	config = codec->chip_info;
+	if (fw_config_probe(FW_CONFIG(AUDIO_CODEC_SOURCE, AUDIO_CODEC_ALC5682)))
+		config->hid = "10EC5682";
+	else
+		config->hid = "RTL5682";
+}
+void variant_devtree_update(void)
+{
+	audio_codec_update();
+}