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-rw-r--r--include/usb.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/usb.h b/include/usb.h
index 43eb409c1a..0f33d81a4b 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -160,6 +160,9 @@ struct usb_endpoint_descriptor {
#define USB_SUBCLASS_GOOGLE_SERIAL 0x50
#define USB_PROTOCOL_GOOGLE_SERIAL 0x01
+#define USB_SUBCLASS_GOOGLE_SPI 0x51
+#define USB_PROTOCOL_GOOGLE_SPI 0x01
+
/* Control requests */
/* bRequestType fields */