linux-kernel - Re: [PATCH] MIPS: Loongson64: enable CONFIG_USB_SERIAL

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Message-Id: <b48ce495-129b-4e07-8d74-d1231073235b@www.fastmail.com>
Date:   Tue, 30 Mar 2021 09:48:10 +0800
From:   "Jiaxun Yang" <jiaxun.yang@...goat.com>
To:     "Qing Zhang" <zhangqing@...ngson.cn>,
        "Thomas Bogendoerfer" <tsbogend@...ha.franken.de>
Cc:     "Huacai Chen" <chenhuacai@...nel.org>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: Loongson64: enable CONFIG_USB_SERIAL_PL2303



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@...ngson-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@...ngson-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@...ngson.cn>

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