From: Marek Vasut <marex@denx.de>
To: Mark Brown <broonie@kernel.org>
Cc: devicetree@vger.kernel.org, shawn.guo@linaro.org,
b44548@freescale.com, dedekind1@gmail.com, b18965@freescale.com,
linux-spi@vger.kernel.org, Huang Shijie <b32955@freescale.com>,
linux-mtd@lists.infradead.org, kernel@pengutronix.de,
Brian Norris <computersforpeace@gmail.com>,
dwmw2@infradead.org, wangyuhang <wangyuhang2014@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V1 3/5] mtd: m25p80: add the quad-read support
Date: Fri, 23 Aug 2013 01:58:05 +0200 [thread overview]
Message-ID: <201308230158.05909.marex@denx.de> (raw)
In-Reply-To: <20130822233611.GA25263@sirena.org.uk>
Dear Mark Brown,
> On Thu, Aug 22, 2013 at 10:29:01PM +0200, Marek Vasut wrote:
> > > On Thu, Aug 22, 2013 at 12:34:53PM -0700, Brian Norris wrote:
> > >
> > > This should be a generic property for all quad devices to use, though,
> > > since the same thing applies everywhere.
> >
> > Full ACK, "m25p,dual-read" and "m25p,quad-read" sound like a good prop
> > names?
>
> I was actually thinking something more generic than that - putting the
> property at the SPI generic bindings level. Though if all flashes with
> this dual/quad read functionality have the prefix m25p the above would
> work also, at the minute this does seem to be mostly used by flash (I
> bet someone's got some DSPs or something though).
Ah! So you mean the SPI controller would provide information that it can do
dual/quad transfers? But then, the additional pins can only be wired to certain
chips (controller by certain CS lines).
Best regards,
Marek Vasut
WARNING: multiple messages have this Message-ID (diff)
From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V1 3/5] mtd: m25p80: add the quad-read support
Date: Fri, 23 Aug 2013 01:58:05 +0200 [thread overview]
Message-ID: <201308230158.05909.marex@denx.de> (raw)
In-Reply-To: <20130822233611.GA25263@sirena.org.uk>
Dear Mark Brown,
> On Thu, Aug 22, 2013 at 10:29:01PM +0200, Marek Vasut wrote:
> > > On Thu, Aug 22, 2013 at 12:34:53PM -0700, Brian Norris wrote:
> > >
> > > This should be a generic property for all quad devices to use, though,
> > > since the same thing applies everywhere.
> >
> > Full ACK, "m25p,dual-read" and "m25p,quad-read" sound like a good prop
> > names?
>
> I was actually thinking something more generic than that - putting the
> property at the SPI generic bindings level. Though if all flashes with
> this dual/quad read functionality have the prefix m25p the above would
> work also, at the minute this does seem to be mostly used by flash (I
> bet someone's got some DSPs or something though).
Ah! So you mean the SPI controller would provide information that it can do
dual/quad transfers? But then, the additional pins can only be wired to certain
chips (controller by certain CS lines).
Best regards,
Marek Vasut
next prev parent reply other threads:[~2013-08-22 23:58 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-19 4:09 [PATCH V1 0/5] Add the Quadspi driver for vf610-twr Huang Shijie
2013-08-19 4:09 ` Huang Shijie
2013-08-19 4:09 ` [PATCH V1 1/5] mtd: m25p80: move the spi-nor commands to a header Huang Shijie
2013-08-19 4:09 ` Huang Shijie
2013-08-19 4:10 ` [PATCH V1 2/5] mtd: m25p80: add support for Spansion s25fl128s chip Huang Shijie
2013-08-19 4:10 ` Huang Shijie
2013-08-19 4:10 ` [PATCH V1 3/5] mtd: m25p80: add the quad-read support Huang Shijie
2013-08-19 4:10 ` Huang Shijie
2013-08-22 19:34 ` Brian Norris
2013-08-22 19:34 ` Brian Norris
2013-08-22 19:55 ` Mark Brown
2013-08-22 19:55 ` Mark Brown
2013-08-22 20:29 ` Marek Vasut
2013-08-22 20:29 ` Marek Vasut
2013-08-22 23:36 ` Mark Brown
2013-08-22 23:36 ` Mark Brown
2013-08-22 23:58 ` Marek Vasut [this message]
2013-08-22 23:58 ` Marek Vasut
2013-08-23 9:41 ` Mark Brown
2013-08-23 9:41 ` Mark Brown
2013-08-23 10:42 ` Marek Vasut
2013-08-23 10:42 ` Marek Vasut
2013-08-23 11:46 ` Brian Norris
2013-08-23 11:46 ` Brian Norris
2013-08-23 11:53 ` Brian Norris
2013-08-23 11:53 ` Brian Norris
2013-08-23 12:01 ` Mark Brown
2013-08-23 12:01 ` Mark Brown
2013-08-23 13:20 ` yuhang wang
2013-08-23 13:20 ` yuhang wang
2013-08-23 6:26 ` Huang Shijie
2013-08-23 6:26 ` Huang Shijie
2013-08-23 11:23 ` Brian Norris
2013-08-23 11:23 ` Brian Norris
2013-08-23 11:27 ` Sourav Poddar
2013-08-23 11:27 ` Sourav Poddar
2013-08-23 11:30 ` Mark Brown
2013-08-23 11:30 ` Mark Brown
2013-08-23 9:05 ` yuhang wang
2013-08-23 9:05 ` yuhang wang
2013-08-23 9:25 ` Huang Shijie
2013-08-23 9:25 ` Huang Shijie
2013-08-23 9:57 ` Sourav Poddar
2013-08-23 9:57 ` Sourav Poddar
2013-08-24 2:45 ` Huang Shijie
2013-08-24 2:45 ` Huang Shijie
2013-08-23 15:59 ` Sourav Poddar
2013-08-23 15:59 ` Sourav Poddar
2013-08-23 13:59 ` yuhang wang
2013-08-23 13:59 ` yuhang wang
2013-08-24 3:01 ` Huang Shijie
2013-08-24 3:01 ` Huang Shijie
2013-08-19 4:10 ` [PATCH V1 4/5] spi: Add Freescale QuadSpi driver Huang Shijie
2013-08-19 4:10 ` Huang Shijie
2013-08-22 19:21 ` Brian Norris
2013-08-22 19:21 ` Brian Norris
2013-08-23 2:14 ` Huang Shijie
2013-08-23 2:14 ` Huang Shijie
2013-08-23 6:59 ` Huang Shijie
2013-08-23 6:59 ` Huang Shijie
2013-08-23 16:44 ` Mark Brown
2013-08-23 16:44 ` Mark Brown
2013-08-24 7:11 ` Brian Norris
2013-08-24 7:11 ` Brian Norris
2013-08-24 13:42 ` Huang Shijie
2013-08-24 13:42 ` Huang Shijie
2013-08-19 4:10 ` [PATCH V1 5/5] ARM: dts: vf610-twr: Add SPI NOR support Huang Shijie
2013-08-19 4:10 ` Huang Shijie
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