Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752671AbbHTHhj (ORCPT ); Thu, 20 Aug 2015 03:37:39 -0400 Received: from mail-oi0-f45.google.com ([209.85.218.45]:35861 "EHLO mail-oi0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752492AbbHTHhi (ORCPT ); Thu, 20 Aug 2015 03:37:38 -0400 MIME-Version: 1.0 In-Reply-To: References: Date: Thu, 20 Aug 2015 15:37:33 +0800 Message-ID: Subject: Re: [PATCH] [PATCH v4] mtd:spi-nor: Add Altera Quad SPI Driver From: Viet Nga Dao To: Brian Norris , David Woodhouse , marex@denx.de Cc: "devicetree@vger.kernel.org" , "linux-mtd@lists.infradead.org" , "linux-kernel@vger.kernel.org" , nga_chi86 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1933 Lines: 44 Hi, >> On Tuesday, August 18, 2015 at 03:24:44 AM, Brian Norris wrote: >>> I'm not very helpful here, so hopefully Viet can be of more use: >> >> Yup :) >> >>> On Mon, Aug 17, 2015 at 07:53:23PM +0200, Marek Vasut wrote: >>> > On Monday, August 17, 2015 at 06:03:38 PM, Brian Norris wrote: >>> > Also, I cannot find any documentation for this IP block even if I >>> > search through Quartus/QSys, is there any proper documentation >>> > available anywhere? >>> >>> I never found proper documentation, but I didn't look too hard. I've >>> mostly been going off of Viet's comments and code. >> >> Me neither, and I looked through the altera stuff in fact. I'm trying to learn whether this is just an Soft IP, in which case it certainly can be fixed ; or if there is actually some chip shipping with this crap synthesised into actual silicon. >> >>> But FWIW, I did find some relevant info for the peculiar Altera EPCQ >>> flash here: >>> >>> https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/litera >>> ture/ >>> hb/cfg/cfg_cf52012.pdf >> >> Altera EPCS/EPCQ flashes are just rebranded micron flashes, they just have different JEDEC >ID and are a bit more expensive. > > You can find the document at here > (https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/ug/ug_embedded_ip.pdf) > Chapter 42.Page 407. > > For the soft IP issue, i've requested hardware engineer to come out > the solution. So in the mean way, our driver will NOT support Micron > flashes until hardware fix is completed. > > Hence, i just submitted version 5 for this driver with eliminating > micron device support. Hope this version will get ACKed by you. > > Thanks, > Viet Nga -- 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/