From mboxrd@z Thu Jan  1 00:00:00 1970
From: LW@KARO-electronics.de (=?utf-8?Q?Lothar_Wa=C3=9Fmann?=)
Date: Thu, 15 Sep 2011 11:12:59 +0200
Subject: [PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28
In-Reply-To: <4E71B741.7010907@freescale.com>
References: <1315450031-6371-1-git-send-email-b32955@freescale.com>
	<20081.44941.12535.496764@ipc1.ka-ro>
	<4E71B741.7010907@freescale.com>
Message-ID: <20081.49563.934890.760378@ipc1.ka-ro>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi,

Huang Shijie writes:
> Hi,
>   add more CC.
> > Hi,
> >
> > Huang Shijie writes:
> >> The patch set is based on Artem's tree:
> >> 	http://git.infradead.org/users/dedekind/l2-mtd-2.6.git
> >>
> >> The general-purpose media interface(GPMI) controller is a flexible interface
> >> to up to several NAND flashs.
> >>
> >> The Bose Ray-Choudhury Hocquenghem(BCH) module is a hardware ECC accelerator.
> >>
> >> With the help of BCH, the GPMI controller can choose to do the hardware ECC or
> >> not.
> >>
> >> This driver is a _pure_ MTD NAND controller driver now.
> >>
> >>
> >> The driver depends on another GPMI-NAND device patch set, you can find them at :
> >> 	[1] http://marc.info/?l=linux-arm-kernel&m=131416901319573&w=2
> >> 	[2] http://marc.info/?l=linux-arm-kernel&m=131416912319668&w=2
> >> 	[3] http://marc.info/?l=linux-arm-kernel&m=131416891119504&w=2
> >> 	[4] http://marc.info/?l=linux-arm-kernel&m=131416896219539&w=2
> >>
> >> Test environment:
> >> 	Using imx23 and imx28 boards for test.
> >>
> >> 	imx23 :
> >> 	console=ttyAMA0,115200 mtdparts=gpmi-nfc:20m(boot),-(user)
> >> 	Tested by USB boot and NAND boot.
> >>
> >>          imx28 :
> >> 	#console=ttyAMA0,115200 root=/dev/mmcblk0p3 rw rootwait
> >> 	Tested by SD card boot mode.
> >>
> > How did you perform your tests?
> >
> > I tried this driver on our TX28 board with the result that with
> The nand conflicats with SD card1. You will get the DMA timeout if you 
> use it.
> Do you use sd card0 or sd card1?
> 
I'm using the SSP0 port.

> BTW:I tested the gpmi driver with SD card0. It works fine.
> 
What exactly did you do in your test?
Can you try the concurrent 'dd' commands that I used?


Lothar Wa?mann
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