diff --git a/src/mainboard/google/dedede/variants/shotzo/Makefile.inc b/src/mainboard/google/dedede/variants/shotzo/Makefile.inc
index eb2c9bc021..655f3c8473 100644
--- a/src/mainboard/google/dedede/variants/shotzo/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/shotzo/Makefile.inc
@@ -1,3 +1,4 @@
 ## SPDX-License-Identifier: GPL-2.0-or-later
 
 ramstage-y += gpio.c
+ramstage-y += variant.c
diff --git a/src/mainboard/google/dedede/variants/shotzo/variant.c b/src/mainboard/google/dedede/variants/shotzo/variant.c
new file mode 100644
index 0000000000..05de15e98c
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/shotzo/variant.c
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpigen.h>
+#include <baseboard/variants.h>
+#include <variant/gpio.h>
+
+void variant_generate_s0ix_hook(enum s0ix_entry entry)
+{
+	if (entry == S0IX_ENTRY)
+		acpigen_soc_clear_tx_gpio(GPP_A10);
+	else if (entry == S0IX_EXIT)
+		acpigen_soc_set_tx_gpio(GPP_A10);
+}