diff --git a/include/libopencm3/stm32/g4/spi.h b/include/libopencm3/stm32/g4/spi.h
new file mode 100644
index 00000000..d7365245
--- /dev/null
+++ b/include/libopencm3/stm32/g4/spi.h
@@ -0,0 +1,34 @@
+/** @defgroup spi_defines SPI Defines
+ *
+ * @brief Defined Constants and Types for the STM32G4xx SPI
+ *
+ * @ingroup STM32G4xx_defines
+ *
+ * @version 1.0.0
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see .
+ */
+
+#ifndef LIBOPENCM3_SPI_H
+#define LIBOPENCM3_SPI_H
+
+#include
+
+#endif
diff --git a/include/libopencm3/stm32/spi.h b/include/libopencm3/stm32/spi.h
index c0a27301..b7e8bc0a 100644
--- a/include/libopencm3/stm32/spi.h
+++ b/include/libopencm3/stm32/spi.h
@@ -40,6 +40,8 @@
# include
#elif defined(STM32G0)
# include
+#elif defined(STM32G4)
+# include
#elif defined(STM32H7)
# include
#else
diff --git a/lib/stm32/g4/Makefile b/lib/stm32/g4/Makefile
index cfdc585a..c9ac6fd6 100644
--- a/lib/stm32/g4/Makefile
+++ b/lib/stm32/g4/Makefile
@@ -44,6 +44,7 @@ OBJS += gpio_common_all.o gpio_common_f0234.o
OBJS += opamp_common_all.o opamp_common_v2.o
OBJS += pwr.o
OBJS += rcc.o rcc_common_all.o
+OBJS += spi_common_all.o spi_common_v2.o
OBJS += timer_common_all.o timer_common_f0234.o
OBJS += usb.o usb_control.o usb_standard.o