USB: serial: ch341: add new Product ID for CH340

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  • USB: serial: ch341: add new Product ID for CH340
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Igor Moura June 23, 2020, 8:11 a.m.
Add PID for CH340 that's found on some ESP8266 dev boards made by
LilyGO. The specific device that contains such serial converter can be
seen here:

Apparently, it's a regular CH340, but I've confirmed with others that
also bought this board that the PID found on this device (0x7522)
differs from other devices with the "same" converter (0x7523). 
Simply adding its PID to the driver and rebuilding it made it work
as expected.

Signed-off by: Igor Moura <>
 drivers/usb/serial/ch341.c | 1 +
 1 file changed, 1 insertion(+)



diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 89675ee29645..8fbaef5c9d69 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -77,6 +77,7 @@ 
 static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x4348, 0x5523) },
+	{ USB_DEVICE(0x1a86, 0x7522) },
 	{ USB_DEVICE(0x1a86, 0x7523) },
 	{ USB_DEVICE(0x1a86, 0x5523) },
 	{ },