From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: Insanely high baud rates Date: Thu, 11 Oct 2018 13:31:34 +0100 Message-ID: <20181011133134.085624af@alans-desktop> References: <3fcef1c1-d746-ae82-c0e6-f079b1a53ffb@zytor.com> <20181010211717.30c1f052@alans-desktop> <16D6AB22-697E-498C-A5B2-3AD90B567E86@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <16D6AB22-697E-498C-A5B2-3AD90B567E86@zytor.com> Sender: linux-kernel-owner@vger.kernel.org To: hpa@zytor.com Cc: linux-serial@vger.kernel.org, Linux Kernel Mailing List , Greg Kroah-Hartman , Jiri Slaby , Johan Hovold , Alexander Viro List-Id: linux-serial@vger.kernel.org > I'm mostly wondering if it is worth future-proofing for new transports. It sounds like we can have a consensus on leaving the upper 4 bits of the speed fields reserved, but leave the details of implementation for the future? It seems reasonable, although I think the reality is that any future transport is not going to be a true serial link, but some kind of serial emulation layer. For those the speed really only matters to tell editors and the like not to bother being clever. I mean - what is the baud rate of a pty ? Alan