From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philip Balister Subject: GPMC setup help Date: Tue, 27 Oct 2009 16:41:41 -0400 Message-ID: <4AE75B05.7010701@balister.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.geekisp.com ([216.168.135.169]:40333 "EHLO starfish.geekisp.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932101AbZJ0Ulk (ORCPT ); Tue, 27 Oct 2009 16:41:40 -0400 Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: "linux-omap@vger.kernel.org" I've been going round and round on this for a couple of days. I have a logic analyzer (cheap USB, that is why come edges are not quite synced) attached to the gpmc pins on a logicpd dev board. The read cycle timings are what I expect. The write cycle seems to do one cycle OK, then thing go into the weeds. Here are the values I write into the registers: GPMC_CONFIG1 reg: 1200 GPMC_CONFIG2 reg: 40400 GPMC_CONFIG3 reg: 20201 GPMC_CONFIG4 reg: 4030403 GPMC_CONFIG5 reg: 1040505 GPMC_CONFIG6 reg: 4030000 and here is a screen shot of the logic analyzer: http://balister.dyndns.org:8008/~balister/gpmc-write.png Philip