Add example configuration stub for the DWC2 USB controller.

Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Chin Liang See <cl...@altera.com>
Cc: Dinh Nguyen <dingu...@opensource.altera.com>
Cc: Vince Bridgers <vbrid...@altera.com>
Cc: Pavel Machek <pa...@denx.de>
---
 include/configs/socfpga_common.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
index 9de3aa7..1df886b 100644
--- a/include/configs/socfpga_common.h
+++ b/include/configs/socfpga_common.h
@@ -176,6 +176,21 @@
 #define CONFIG_BAUDRATE                        115200
 
 /*
+ * USB
+ */
+#ifdef CONFIG_CMD_USB
+#define CONFIG_USB_DWC2
+#define CONFIG_USB_STORAGE
+/*
+ * NOTE: User must define either of the following to select which
+ *       of the two USB controllers available on SoCFPGA to use.
+ *       The DWC2 driver doesn't support multiple USB controllers.
+ * #define CONFIG_USB_DWC2_REG_ADDR    SOCFPGA_USB0_ADDRESS
+ * #define CONFIG_USB_DWC2_REG_ADDR    SOCFPGA_USB1_ADDRESS
+ */
+#endif
+
+/*
  * U-Boot environment
  */
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
-- 
2.0.0

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