diff --git a/src/mainboard/google/brya/variants/craaskov/overridetree.cb b/src/mainboard/google/brya/variants/craaskov/overridetree.cb
index 686c829..eee5402 100644
--- a/src/mainboard/google/brya/variants/craaskov/overridetree.cb
+++ b/src/mainboard/google/brya/variants/craaskov/overridetree.cb
@@ -60,21 +60,6 @@
 
 	register "typec_aux_bias_pads[0]" = "{.pad_auxp_dc = GPP_E22, .pad_auxn_dc = GPP_E23}"
 
-	# Configure external V1P05/Vnn/VnnSx Rails
-	register "ext_fivr_settings" = "{
-		.configure_ext_fivr = 1,
-		.v1p05_enable_bitmap = FIVR_ENABLE_ALL_SX & ~FIVR_ENABLE_S0,
-		.vnn_enable_bitmap = FIVR_ENABLE_ALL_SX,
-		.vnn_sx_enable_bitmap = FIVR_ENABLE_ALL_SX,
-		.v1p05_supported_voltage_bitmap = FIVR_VOLTAGE_NORMAL,
-		.vnn_supported_voltage_bitmap = FIVR_VOLTAGE_MIN_ACTIVE,
-		.v1p05_voltage_mv = 1050,
-		.vnn_voltage_mv = 780,
-		.vnn_sx_voltage_mv = 1050,
-		.v1p05_icc_max_ma = 500,
-		.vnn_icc_max_ma = 500,
-	}"
-
 	register "serial_io_i2c_mode" = "{
 		[PchSerialIoIndexI2C0] = PchSerialIoPci,
 		[PchSerialIoIndexI2C1] = PchSerialIoPci,
diff --git a/src/mainboard/google/brya/variants/craaskov/variant.c b/src/mainboard/google/brya/variants/craaskov/variant.c
index 68f128c..cee0308 100644
--- a/src/mainboard/google/brya/variants/craaskov/variant.c
+++ b/src/mainboard/google/brya/variants/craaskov/variant.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <baseboard/variants.h>
+#include <boardid.h>
 #include <device/device.h>
 #include <sar.h>
 
@@ -31,3 +32,28 @@
 		ish->enabled = 0;
 	}
 }
+
+void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
+{
+	const uint32_t id = board_id();
+	if (id == BOARD_ID_UNKNOWN || id < 2) { // proto=0, EVT=1
+		config->ext_fivr_settings.configure_ext_fivr = 1;
+
+		config->ext_fivr_settings.v1p05_enable_bitmap =
+				FIVR_ENABLE_ALL_SX & ~FIVR_ENABLE_S0;
+		config->ext_fivr_settings.vnn_enable_bitmap =
+				FIVR_ENABLE_ALL_SX;
+		config->ext_fivr_settings.vnn_sx_enable_bitmap =
+				FIVR_ENABLE_ALL_SX;
+		config->ext_fivr_settings.v1p05_supported_voltage_bitmap =
+				FIVR_VOLTAGE_NORMAL;
+		config->ext_fivr_settings.vnn_supported_voltage_bitmap =
+				FIVR_VOLTAGE_MIN_ACTIVE;
+		config->ext_fivr_settings.v1p05_voltage_mv = 1050;
+		config->ext_fivr_settings.vnn_voltage_mv = 780;
+		config->ext_fivr_settings.vnn_sx_voltage_mv = 1050;
+		config->ext_fivr_settings.v1p05_icc_max_ma = 500;
+		config->ext_fivr_settings.vnn_icc_max_ma = 500;
+		printk(BIOS_INFO, "Configured external FIVR\n");
+	}
+}