一. 配置内核编译CH341驱动模块
配置文件路径: /kernel/arch/arm64/configs/rockchip_defconfig
+CONFIG_USB_SERIAL_CH341=y
+CONFIG_USB_SERIAL_PL2303=y
二. 修改CH341 /dev/ttyUSB* 的节点名称
修改节点名称为了更方便的使用
diff --git a/kernel/drivers/usb/serial/usb-serial.c b/kernel/drivers/usb/serial/usb-serial.c
index e7e29c7..50f386f 100644
--- a/kernel/drivers/usb/serial/usb-serial.c
+++ b/kernel/drivers/usb/serial/usb-serial.c
@@ -96,7 +96,10 @@ static int allocate_minors(struct usb_serial *serial, int num_ports)
mutex_lock(&table_lock);
for (i = 0; i < num_ports; ++i) {
port = serial->port[i];
- minor = idr_alloc(&serial_minors, port, 0, 0, GFP_KERNEL);
+ if(!strcmp(serial->type->description, "ch341-uart"))
+ minor = idr_alloc(&serial_minors, port, 10, 0, GFP_KERNEL);
+ else
+ minor = idr_alloc(&serial_minors, port, 0, 0, GFP_KERNEL);
if (minor < 0)
goto error;
port->minor = minor;
CH341的节点名称修改为/dev/ttyUSB10.