-/* USB portsc */
-/* values for portsc field */
-#define MXC_EHCI_PHY_LOW_POWER_SUSPEND (1 << 23)
-#define MXC_EHCI_FORCE_FS (1 << 24)
-#define MXC_EHCI_UTMI_8BIT (0 << 28)
-#define MXC_EHCI_UTMI_16BIT (1 << 28)
-#define MXC_EHCI_SERIAL (1 << 29)
-#define MXC_EHCI_MODE_UTMI (0 << 30)
-#define MXC_EHCI_MODE_PHILIPS (1 << 30)
-#define MXC_EHCI_MODE_ULPI (2 << 30)
-#define MXC_EHCI_MODE_SERIAL (3 << 30)
-
-/* values for flags field */
-#define MXC_EHCI_INTERFACE_DIFF_UNI (0 << 0)
-#define MXC_EHCI_INTERFACE_DIFF_BI (1 << 0)
-#define MXC_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
-#define MXC_EHCI_INTERFACE_SINGLE_BI (3 << 0)
-#define MXC_EHCI_INTERFACE_MASK (0xf)
-
-#define MXC_EHCI_POWER_PINS_ENABLED (1 << 5)
-#define MXC_EHCI_TTL_ENABLED (1 << 6)
-
-#define MXC_EHCI_INTERNAL_PHY (1 << 7)
-#define MXC_EHCI_IPPUE_DOWN (1 << 8)
-#define MXC_EHCI_IPPUE_UP (1 << 9)
+/*
+ * CSPI register definitions
+ */
+#define MXC_CSPI
+#define MXC_CSPICTRL_EN (1 << 0)
+#define MXC_CSPICTRL_MODE (1 << 1)
+#define MXC_CSPICTRL_XCH (1 << 2)
+#define MXC_CSPICTRL_SMC (1 << 3)
+#define MXC_CSPICTRL_POL (1 << 4)
+#define MXC_CSPICTRL_PHA (1 << 5)
+#define MXC_CSPICTRL_SSCTL (1 << 6)
+#define MXC_CSPICTRL_SSPOL (1 << 7)
+#define MXC_CSPICTRL_CHIPSELECT(x) (((x) & 0x3) << 24)
+#define MXC_CSPICTRL_BITCOUNT(x) (((x) & 0x1f) << 8)
+#define MXC_CSPICTRL_DATARATE(x) (((x) & 0x7) << 16)
+#define MXC_CSPICTRL_TC (1 << 8)
+#define MXC_CSPICTRL_RXOVF (1 << 6)
+#define MXC_CSPICTRL_MAXBITS 0x1f
+
+#define MXC_CSPIPERIOD_32KHZ (1 << 15)
+#define MAX_SPI_BYTES 4
+
+#define MXC_SPI_BASE_ADDRESSES \
+ 0x43fa4000, \
+ 0x50010000, \
+ 0x53f84000,