From mboxrd@z Thu Jan 1 00:00:00 1970 From: computersforpeace@gmail.com (Brian Norris) Date: Thu, 20 Mar 2014 11:54:52 -0700 Subject: [PATCH 2/3] mtd: davinci-nand: add dts property for NAND_NO_SUBPAGE_WRITE option In-Reply-To: <532B2D3F.6050004@ti.com> 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> Message-ID: <20140320185452.GB21018@ld-irv-0074> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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