2 files changed, 25 insertions, 0 deletions
diff --git a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/gpio.h
new file mode 100644
index 000000000000..b94afac4bf84
--- /dev/null
+++ b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/gpio.h
@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __BASEBOARD_GPIO_H__
+#define __BASEBOARD_GPIO_H__
+
+#endif /* __BASEBOARD_GPIO_H__ */
diff --git a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/variants.h
index 927af2f91388..725baf8b0879 100644
--- a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/variants.h
@@ -3,4 +3,23 @@
 #ifndef __BASEBOARD_VARIANTS_H__
 #define __BASEBOARD_VARIANTS_H__
 
+#include <amdblocks/gpio.h>
+
+/*
+ * This function provides base GPIO configuration table. It is typically provided by
+ * baseboard using a weak implementation. If GPIO configuration for a variant differs
+ * significantly from the baseboard, then the variant can also provide a strong implementation
+ * of this function.
+ */
+void variant_base_gpio_table(const struct soc_amd_gpio **gpio, size_t *size);
+
+/*
+ * This function allows variant to override any GPIOs that are different than the base GPIO
+ * configuration provided by variant_base_gpio_table().
+ */
+void variant_override_gpio_table(const struct soc_amd_gpio **gpio, size_t *size);
+
+/* This function provides GPIO init in bootblock. */
+void variant_bootblock_gpio_table(const struct soc_amd_gpio **gpio, size_t *size);
+
 #endif /* __BASEBOARD_VARIANTS_H__ */