linux-kernel - Re: [PATCH 0/5] defconfigs: add MTD_SPI

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Date:	Thu, 17 Apr 2014 13:07:44 +0200
From:	Marek Vasut <marex@...x.de>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-mtd@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Shawn Guo <shawn.guo@...escale.com>,
	Sascha Hauer <kernel@...gutronix.de>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	Steven Miao <realmz6@...il.com>,
	adi-buildroot-devel@...ts.sourceforge.net,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org
Subject: Re: [PATCH 0/5] defconfigs: add MTD_SPI_NOR (dependency for M25P80)

On Thursday, April 17, 2014 at 09:21:44 AM, Brian Norris wrote:
> Hi all,
> 
> We are introducing a new SPI-NOR library/framework for MTD, to support
> various types of SPI-NOR flash controllers which require (or benefit from)
> intimate knowledge of the flash interface, rather than just the relatively
> dumb SPI interface. This library borrows much of the m25p80 driver for its
> abstraction and moves this code into a spi-nor module.
> 
> This means CONFIG_M25P80 now has a dependency on CONFIG_MTD_SPI_NOR, which
> should be added to the defconfigs. I'm not sure what is the best process
> for doing this. Should each $ARCH maintainer just take their respective
> patch, even if the MTD_SPI_NOR Kconfig symbol is not defined for them yet?
> Or should maintainers plan on merging the relevant SPI-NOR code into their
> trees during the development cycle? Or some third option?

Shouldn't the M25P80 driver just "select" the SPI NOR framework? Then you won't 
need the adjustment to defconfigs at all I think.

Best regards,
Marek Vasut
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