diff --git a/arch/arm/src/calypso/calypso_spi.h b/arch/arm/src/calypso/calypso_spi.h
new file mode 100644
index 0000000000..cb44a6291a
--- /dev/null
+++ b/arch/arm/src/calypso/calypso_spi.h
@@ -0,0 +1,30 @@
+#ifndef ___ARCH_ARM_SRC_CALYPSO_CALYPSO_SPI_H
+#define ___ARCH_ARM_SRC_CALYPSO_CALYPSO_SPI_H
+
+#define BASE_ADDR_SPI   0xfffe3000
+#define SPI_REG(n)      (BASE_ADDR_SPI+(n))
+
+enum spi_regs {
+        REG_SET1        = 0x00,
+        REG_SET2        = 0x02,
+        REG_CTRL        = 0x04,
+        REG_STATUS      = 0x06,
+        REG_TX_LSB      = 0x08,
+        REG_TX_MSB      = 0x0a,
+        REG_RX_LSB      = 0x0c,
+        REG_RX_MSB      = 0x0e,
+};
+
+#define SPI_SET1_EN_CLK         (1 << 0)
+#define SPI_SET1_WR_IRQ_DIS     (1 << 4)
+#define SPI_SET1_RDWR_IRQ_DIS   (1 << 5)
+
+#define SPI_CTRL_RDWR           (1 << 0)
+#define SPI_CTRL_WR             (1 << 1)
+#define SPI_CTRL_NB_SHIFT       2
+#define SPI_CTRL_AD_SHIFT       7
+
+#define SPI_STATUS_RE           (1 << 0)        /* Read End */
+#define SPI_STATUS_WE           (1 << 1)        /* Write End */
+
+#endif /* ___ARCH_ARM_SRC_CALYPSO_CALYPSO_SPI_H */