Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764032AbXJOWJV (ORCPT ); Mon, 15 Oct 2007 18:09:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757072AbXJOWJJ (ORCPT ); Mon, 15 Oct 2007 18:09:09 -0400 Received: from nwd2mail11.analog.com ([137.71.25.57]:49125 "EHLO nwd2mail11.analog.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756242AbXJOWJH convert rfc822-to-8bit (ORCPT ); Mon, 15 Oct 2007 18:09:07 -0400 X-IronPort-AV: i="4.21,279,1188792000"; d="scan'208"; a="41778185:sNHT37770096" From: Robin Getz Organization: Blackfin uClinux org To: "Andrew Morton" Subject: Re: [PATCH 3/3] Blackfin serial driver: this driver enable SPORTs on Blackfin emulate UART Date: Mon, 15 Oct 2007 18:10:02 -0400 User-Agent: KMail/1.9.5 Cc: "Bryan Wu" , dmitry.torokhov@gmail.com, linux-input@atrey.karlin.mff.cuni.cz, linux-joystick@atrey.karlin.mff.cuni.cz, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org References: <1192098220-25828-1-git-send-email-bryan.wu@analog.com> <1192098220-25828-4-git-send-email-bryan.wu@analog.com> <20071015133326.995a4f38.akpm@linux-foundation.org> In-Reply-To: <20071015133326.995a4f38.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200710151810.02291.rgetz@blackfin.uclinux.org> X-OriginalArrivalTime: 15 Oct 2007 22:09:05.0837 (UTC) FILETIME=[00774DD0:01C80F78] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1445 Lines: 40 On Mon 15 Oct 2007 16:33, Andrew Morton pondered: > > > Subject: [PATCH 3/3] Blackfin serial driver: this driver enable SPORTs > on Blackfin emulate UART > > That's a bit hard to parse. > Blackfin's have a synchronous Serial Peripheral pORT (SPORT). Unlike SPI, UART, I2C, or CAN interfaces which are designed for specific industry standard compatible communication only, the SPORT support a variety (software programmable) serial data communication protocols: - A-law or ยต-law companding according to G.711 specification - Multichannel or Time-Division-Multiplexed (TDM) modes - Stereo Audio I2S Mode - TDM Modes for Multi-Channel audio codecs - H.100 Telephony standard support - others, but if anyone really cares, they need to read the chip specs... Bryan's patch takes the SPORT, and makes a standard UART out of it (exposing /dev/ttySS0) for those people who don't have enough hardware UARTs in their system. Is it a SPORT driver that emulates a UART, or a UART driver on the SPORT? I think it is the latter... Maybe: [PATCH 3/3] Blackfin serial driver: enables a UART interface for the SPORT Which still doesn't make any sense, until you know what a SPORT is :) -Robin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/