Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759973AbYBYAZE (ORCPT ); Sun, 24 Feb 2008 19:25:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751868AbYBYAYy (ORCPT ); Sun, 24 Feb 2008 19:24:54 -0500 Received: from mba.ocn.ne.jp ([122.1.235.107]:51777 "EHLO smtp.mba.ocn.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751003AbYBYAYx (ORCPT ); Sun, 24 Feb 2008 19:24:53 -0500 Date: Mon, 25 Feb 2008 09:25:15 +0900 (JST) Message-Id: <20080225.092515.126141645.anemo@mba.ocn.ne.jp> To: nforrester@whoi.edu Cc: david-b@pacbell.net, spi-devel-general@lists.sourceforge.net, marc.pignat@hevs.ch, linux-kernel@vger.kernel.org Subject: Re: [spi-devel-general] [PATCH] atmel_spi: support zero length transfer From: Atsushi Nemoto In-Reply-To: <47BF2455.8030904@whoi.edu> References: <47BED734.5030002@whoi.edu> <20080222190228.2B0CB28E363@adsl-69-226-248-13.dsl.pltn13.pacbell.net> <47BF2455.8030904@whoi.edu> X-Fingerprint: 6ACA 1623 39BD 9A94 9B1A B746 CA77 FE94 2874 D52F X-Pgp-Public-Key: http://wwwkeys.pgp.net/pks/lookup?op=get&search=0x2874D52F X-Mailer: Mew version 5.2 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 750 Lines: 17 On Fri, 22 Feb 2008 14:36:53 -0500, Ned Forrester wrote: > Or are you and Atsushi talking about using spi_transfer.delay_usecs > *with* a zero length transfer to effectively put a delay between the > assertion of CS and the start of the first clock? If so, then I guess I > missed the original point. Sorry. Yes. I want to use zero length transfer with delay_usecs to achieve CS-CLK delay for my funny device. And I was too lazy to reject true nop transfer. --- Atsushi Nemoto -- 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/