linux-kernel - Re: [PATCH 2/3] mtd: davinci-nand: add dts property for NAND_NO_SUBPAGE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140320185452.GB21018@ld-irv-0074>
Date:	Thu, 20 Mar 2014 11:54:52 -0700
From:	Brian Norris <computersforpeace@...il.com>
To:	Santosh Shilimkar <santosh.shilimkar@...com>
Cc:	Warner Losh <imp@...imp.com>,
	Ivan Khoronzhuk <ivan.khoronzhuk@...com>,
	David Woodhouse <dwmw2@...radead.org>, galak@...eaurora.org,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, rob@...dley.net,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	grygorii.strashko@...com, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mtd@...ts.infradead.org,
	Murali Karicheri <m-karicheri2@...com>
Subject: Re: [PATCH 2/3] mtd: davinci-nand: add dts property for
 NAND_NO_SUBPAGE_WRITE option

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/