diff --git a/src/mainboard/google/brya/variants/uldrenite/Makefile.mk b/src/mainboard/google/brya/variants/uldrenite/Makefile.mk
index 87f515acad..c31fa307d0 100644
--- a/src/mainboard/google/brya/variants/uldrenite/Makefile.mk
+++ b/src/mainboard/google/brya/variants/uldrenite/Makefile.mk
@@ -5,4 +5,5 @@ romstage-y += gpio.c
 romstage-y += memory.c
 ramstage-y += gpio.c
 
+ramstage-$(CONFIG_FW_CONFIG) += variant.c
 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_HDA_VERB) += hda_verb.c
diff --git a/src/mainboard/google/brya/variants/uldrenite/variant.c b/src/mainboard/google/brya/variants/uldrenite/variant.c
new file mode 100644
index 0000000000..753abb6d02
--- /dev/null
+++ b/src/mainboard/google/brya/variants/uldrenite/variant.c
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <console/console.h>
+#include <delay.h>
+
+#define RW350R_RST_DELAY_MS 20
+#define RW350R_PERST_DELAY_MS 30
+
+static const struct pad_config rw350r_en_pad[] = {
+	/* H23 : LTE_PWR_OFF_EN */
+	PAD_CFG_GPO(GPP_H23, 1, DEEP),
+};
+static const struct pad_config rw350r_rst_pad[] = {
+	/* F12 : WWAN_RST_L */
+	PAD_CFG_GPO_LOCK(GPP_F12, 1, LOCK_CONFIG),
+};
+static const struct pad_config rw350r_perst_pad[] = {
+	/* F13 : PLTRST_WWAN# */
+	PAD_CFG_GPO(GPP_F13, 1, DEEP),
+};
+
+void variant_init(void)
+{
+	/*
+	 * RW350R power on seuqence:
+	 * De-assert WWAN_EN -> 20ms -> de-assert WWAN_RST -> 30ms ->
+	 * de-assert WWAN_PERST
+	 */
+	gpio_configure_pads(rw350r_en_pad, ARRAY_SIZE(rw350r_en_pad));
+	mdelay(RW350R_RST_DELAY_MS);
+	gpio_configure_pads(rw350r_rst_pad, ARRAY_SIZE(rw350r_rst_pad));
+	mdelay(RW350R_PERST_DELAY_MS);
+	gpio_configure_pads(rw350r_perst_pad, ARRAY_SIZE(rw350r_perst_pad));
+}