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diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt
index 540c91c..f4d2145 100644
--- a/Documentation/usb/usb-serial.txt
+++ b/Documentation/usb/usb-serial.txt
@@ -440,6 +440,22 @@ Winchiphead CH341 Driver
For any questions or problems with this driver, please contact
frank@kingswood-consulting.co.uk.
+Moschip MCS7720, MCS7715 driver
+
+ These chips are present in devices sold by various manufacturers, such as Syba
+ and Cables Unlimited. There may be others. The 7720 provides two serial
+ ports, and the 7715 provides one serial and one standard PC parallel port.
+ Support for the 7715's parallel port is enabled by a separate option, which
+ will not appear unless parallel port support is first enabled at the top-level
+ of the Device Drivers config menu. Currently only compatibility mode is
+ supported on the parallel port (no ECP/EPP).
+
+ TODO:
+ - Implement ECP/EPP modes for the parallel port.
+ - Baud rates higher than 115200 are currently broken.
+ - Devices with a single serial port based on the Moschip MCS7703 may work
+ with this driver with a simple addition to the usb_device_id table. I
+ don't have one of these devices, so I can't say for sure.
Generic Serial driver
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