From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ladislav Michl <ladis@linux-mips.org>
Subject: Re: [PATCH v3 5/7] mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA
 implementation
Date: Tue, 14 Nov 2017 16:22:52 +0100
Message-ID: <20171114152252.bekjxrovpis6xfur@lenoch>
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To: Roger Quadros <rogerq@ti.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>, Tony Lindgren <tony@atomide.com>, Peter Ujfalusi <peter.ujfalusi@ti.com>, Kyungmin Park <kyungmin.park@samsung.com>, linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org
List-Id: linux-omap@vger.kernel.org

On Tue, Nov 14, 2017 at 05:05:20PM +0200, Roger Quadros wrote:
> On 13/11/17 17:27, Ladislav Michl wrote:
> > Here it would be nice to have the same documentation Nokia had at the time
> > writing support for n8x0 as they clearly used few undocumented features.
> > Please see section 3.9.5 of above mentioned specs. Seems DMA slave should
> > be triggered by RDY not INT pin.
> 
> Correct. For RDY pin usage See 3.7.3 Handshaking Operation
> 
> "The handshaking feature allows the host system to simply monitor the RDY signal from the device to determine
> when the initial word of burst data is ready to be read."

To collect more documentation from Samsung, this appnote is also relevant:
http://trendol.free.fr/SMDK6410/842440S3C6410_ApplicationNotes_rev10.pdf
Section 7. OneNand, especially 7.5.1.3-6.

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