From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Gamari Subject: Re: AM335x BeagleBone SPI Issues Date: Tue, 11 Dec 2012 10:22:26 -0500 Message-ID: <87y5h4r4ul.fsf@gmail.com> References: <50C5E23D.5040605@communistcode.co.uk> <20121210135337.GA10219@arwen.pp.htv.fi> <50C5F6A8.5060701@communistcode.co.uk> <20121210145947.GK11038@arwen.pp.htv.fi> <50C5FD73.1000408@communistcode.co.uk> <20121210183500.GB14303@arwen.pp.htv.fi> <50C70846.7010207@communistcode.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-gh0-f174.google.com ([209.85.160.174]:62942 "EHLO mail-gh0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753875Ab2LKPW3 (ORCPT ); Tue, 11 Dec 2012 10:22:29 -0500 Received: by mail-gh0-f174.google.com with SMTP id g15so751006ghb.19 for ; Tue, 11 Dec 2012 07:22:28 -0800 (PST) In-Reply-To: <50C70846.7010207@communistcode.co.uk> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ml@communistcode.co.uk, balbi@ti.com Cc: linux-omap@vger.kernel.org, Shubhrajyoti Datta Jack Mitchell writes: > Shubhro, Felipe, > > Thank you, the reordering dma patch fixed the dma issue I was having! > However, the bad news, I now get the same results for the dma and > non-dma spidev test. While the scope shows the SPI clk and data is fine, > the reading from the program still shows 0x00 for all words. > Just to make sure this has been thought of: I've seen this sort of behavior in the past when the CLK pin wasn't configured as an input. Cheers, - Ben