On Mon, Mar 29, 2021, at 3:15 PM, Qing Zhang wrote: > When using the Loongson-3A4000 machine for serial port debugging, > there is no /dev/ttyUSB* output, which makes the serial port unavailable, > For convenience, we open this configuration. > > zhangqing@loongson-pc:~$ cat /sys/firmware/lefi/boardinfo > Board Info > Manufacturer : THTF > Board Name : THTF-LS3A4000-7A1000-ML4A > Family : LOONGSON3 > > BIOS Info > Vendor : ZD tech > Version : ZD tech-V2.1.1 > ROM Size : 4 KB > Release Date : 2020-06-29 > > zhangqing@loongson-pc:~$ lsusb > Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 005 Device 003: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse > Bus 005 Device 002: ID 0c45:760b Microdia USB Keyboard > Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 003 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port > Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > > Signed-off-by: Qing Zhang <zhangqing@xxxxxxxxxxx> Please, don't add random stuff to defconfig. Carry it locally in your config as the device doesn't come with the borad, it's your accessory. Thanks. -- - Jiaxun
