linux-kernel - Re: [PATCH v4 1/2] mtd: nand: pxa3xx: Fix PIO FIFO draining

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Message-ID: <54F49553.2020307@free-electrons.com>
Date:	Mon, 02 Mar 2015 17:52:35 +0100
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Brian Norris <computersforpeace@...il.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
CC:	Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	linux-mtd@...ts.infradead.org,
	Boris Brezillon <boris@...e-electrons.com>,
	Thomas Petazzoni <thomas@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Lior Amsalem <alior@...vell.com>,
	Sudhakar Gundubogula <sudhakar@...vell.com>,
	Seif Mazareeb <seif@...vell.com>, stable@...r.kernel.org
Subject: Re: [PATCH v4 1/2] mtd: nand: pxa3xx: Fix PIO FIFO draining

On 28/02/2015 10:01, Brian Norris wrote:
> On Wed, Feb 18, 2015 at 11:32:07AM +0100, Maxime Ripard wrote:
>> The NDDB register holds the data that are needed by the read and write
>> commands.
>>
>> However, during a read PIO access, the datasheet specifies that after each 32
>> bytes read in that register, when BCH is enabled, we have to make sure that the
>> RDDREQ bit is set in the NDSR register.
>>
>> This fixes an issue that was seen on the Armada 385, and presumably other mvebu
>> SoCs, when a read on a newly erased page would end up in the driver reporting a
>> timeout from the NAND.
>>
>> Cc: <stable@...r.kernel.org> # v3.14
>> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> 
> Pushed this one to linux-mtd.git. I'll try to get it out in the 4.0
> cycle. I assume patch 2 (the DT addition) will go through arm-soc.

Yes, now that you took the driver part,  I will apply it on mvebu and then push it
to arm-soc.

Thanks,

Gregory


> 
> Brian
> 


-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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