From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758525AbYEPVZi (ORCPT ); Fri, 16 May 2008 17:25:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751669AbYEPVZa (ORCPT ); Fri, 16 May 2008 17:25:30 -0400 Received: from rv-out-0506.google.com ([209.85.198.225]:23008 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752466AbYEPVZ3 (ORCPT ); Fri, 16 May 2008 17:25:29 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=jhhMhVNXs094+Zd1Tq1hg/ehrbW59nlC35VCsSn/xnwXMBC+SUssrDkSRVABlDPOqLDArwxs75jsO0akI7epcKxkI9VjImyavWo48wjwUYnxVV7zjbPK9g660GAt4UdCOlOo2JXFsUaPo4rvmLo29Zm4VVpkuzqe3ha070L5fLQ= Message-ID: <9e4733910805161425i2d6cc034y3377af053a4198b5@mail.gmail.com> Date: Fri, 16 May 2008 17:25:28 -0400 From: "Jon Smirl" To: "Grant Likely" Subject: Re: [RFC PATCH 0/4] Describe SPI devices in the OF device tree and add mpc5200-spi driver Cc: linuxppc-dev@ozlabs.org, spi-devel-general@lists.sourceforge.net, linux-kernel@vger.kernel.org, dbrownell@users.sourceforge.net, fabrizio.garetto@gmail.com In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080516193054.28030.35126.stgit@trillian.secretlab.ca> <9e4733910805161327u4c42fd1dg5b09319d89db447c@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/16/08, Grant Likely wrote: > On Fri, May 16, 2008 at 2:27 PM, Jon Smirl wrote: > > On 5/16/08, Grant Likely wrote: > >> This series is a set of changes to allow the slaves on an SPI bus to be > >> described in the OF device tree (useful in arch/powerpc) and adds a driver > >> that uses it (the Freescale MPC5200 SoC's SPI device). > > > > Right now we have SPI hooked up to PSC3. Hardware engineer is gone but > > I'll see if I can get him to alter things to use the SPI controller. I > > have an old mail from him where he thinks the Phytec board is missing > > a signal needed to use the SPI controller. > > > While I'd appreciate the testing, I suspect that you really don't want > to do that. The dedicated SPI controller isn't very good. It only > does a byte at a time and so is rather slow. A PSC is SPI mode should > be better (but I haven't tried it personally it yet). What is the device tree node for PSC3 supposed to look like when it has both serial and spi enabled? -- Jon Smirl jonsmirl@gmail.com