From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Norris Subject: Re: [PATCH 2/3] mtd: davinci-nand: add dts property for NAND_NO_SUBPAGE_WRITE option Date: Thu, 20 Mar 2014 11:54:52 -0700 Message-ID: <20140320185452.GB21018@ld-irv-0074> References: <1395335184-4745-1-git-send-email-ivan.khoronzhuk@ti.com> <1395335184-4745-3-git-send-email-ivan.khoronzhuk@ti.com> <532B2183.2080309@ti.com> <20140320172912.GW31517@norris-Latitude-E6410> <532B2766.6090506@ti.com> <532B2D3F.6050004@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <532B2D3F.6050004@ti.com> Sender: linux-doc-owner@vger.kernel.org To: Santosh Shilimkar Cc: Warner Losh , Ivan Khoronzhuk , David Woodhouse , galak@codeaurora.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, rob@landley.net, Russell King - ARM Linux , grygorii.strashko@ti.com, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, Murali Karicheri List-Id: devicetree@vger.kernel.org On Thu, Mar 20, 2014 at 02:02:39PM -0400, Santosh Shilimkar wrote: > On Thursday 20 March 2014 01:44 PM, Warner Losh wrote: > > I though sub page writing was one of the fields in the onfi and/or jedec(toggle) meta data structures. Have you looked there? > > > Am not sure if I follow you. The limitation is from the TI NAND controller(AEMIF) and > not the NAND memory. That doesn't match the patch description, which says "that flash doesn't support subpage writing". Flash != flash controller. Which one is it? If it's a controller limitation, I think we should be able to pull this from a "compatible" property, no? Brian