From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: Neal Liu <neal_liu@aspeedtech.com>
Cc: "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>
Subject: Re: Questions about usb to serial driver
Date: Fri, 1 Jul 2022 09:16:17 +0200 [thread overview]
Message-ID: <Yr6fQbeo/FDrBmfU@kroah.com> (raw)
In-Reply-To: <HK0PR06MB3202C7064582E6CB027237BC80BD9@HK0PR06MB3202.apcprd06.prod.outlook.com>
On Fri, Jul 01, 2022 at 03:16:13AM +0000, Neal Liu wrote:
> Hi all,
>
> I have a question about USB-serial and I hope I can find the answer from here.
> I'll be appreciated it if there is any feedback from you.
>
> My question is If I have a USB device controller (udc) and a uart controller (16550) independently in a SoC,
> is there any usb-serial drivers or applications that could possible to support/connect:
> - udc tx to uart rx
> - uart tx to udc rx
>
> Any chance I can make this SoC as a usb-serial devices?
Sure, use the CONFIG_USB_CONFIGFS_SERIAL or CONFIG_USB_CONFIGFS_ACM
build options and hook your gadget up to the serial port in userspace
and you will have a very expensive usb-serial converter (there are very
cheap chips that do the same thing if you want to make a simpler
device.)
hope this helps,
greg k-h
next prev parent reply other threads:[~2022-07-01 7:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-01 3:16 Questions about usb to serial driver Neal Liu
2022-07-01 7:16 ` gregkh [this message]
2022-07-01 8:57 ` Neal Liu
2022-07-01 9:24 ` gregkh
2022-07-04 8:31 ` Neal Liu
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