USB: m66592-udc: Add support for SH7722 USBF

Add support for SuperH SH7722 USB Function.

M66592 is similar to SH7722 USBF. It can support SH7722 USBF by
changing several M66592 code.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 77a3759d6fc7..e706882a8e6f 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -220,6 +220,16 @@ config USB_M66592
         default USB_GADGET
         select USB_GADGET_SELECTED
 
+config SUPERH_BUILT_IN_M66592
+        boolean "Enable SuperH built-in USB like the M66592"
+        depends on USB_GADGET_M66592 && CPU_SUBTYPE_SH7722
+        help
+           SH7722 has USB like the M66592.
+
+           The transfer rate is very slow when use "Ethernet Gadget".
+           However, this problem is improved if change a value of
+           NET_IP_ALIGN to 4.
+
 config USB_GADGET_GOKU
         boolean "Toshiba TC86C001 'Goku-S'"
         depends on PCI