From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754282AbdKBROB (ORCPT ); Thu, 2 Nov 2017 13:14:01 -0400 Received: from imap.thunk.org ([74.207.234.97]:59230 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751587AbdKBRN7 (ORCPT ); Thu, 2 Nov 2017 13:13:59 -0400 Date: Thu, 2 Nov 2017 13:13:55 -0400 From: "Theodore Ts'o" To: Paul Menzel Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Is 115200 still the maximum baudrate? Message-ID: <20171102171355.onz27qoczedq7jpv@thunk.org> Mail-Followup-To: Theodore Ts'o , Paul Menzel , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 02, 2017 at 04:42:56PM +0100, Paul Menzel wrote: > > The Linux serial console documentation [1] says that 115200 is the maximum > supported baudrate. > > > The maximum baudrate is 115200. > > Is that still accurate? If yes, where should I look to support higher > values? See the setserial man page and the spd_* options: spd_hi Use 57.6kb when the application requests 38.4kb. This parameter may be specified by a non-privileged user. spd_vhi Use 115kb when the application requests 38.4kb. This parameter may be specified by a non-privileged user. spd_shi Use 230kb when the application requests 38.4kb. This parameter may be specified by a non-privileged user. spd_warp Use 460kb when the application requests 38.4kb. This parameter may be specified by a non-privileged user. - Ted