From: gianluca <gianlucarenzi@eurekelettronica.it>
To: Huang Shijie <b32955@freescale.com>
Cc: dedekind1@gmail.com, koen.beel.barco@gmail.com,
w.sang@pengutronix.de, marek.vasut@gmail.com,
linux-mtd@lists.infradead.org, shijie8@gmail.com,
s.hauer@pengutronix.de, linux-arm-kernel@lists.infradead.org,
"Lothar Waßmann" <LW@KARO-electronics.de>
Subject: Re: [PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28
Date: Thu, 15 Sep 2011 17:24:16 +0200 [thread overview]
Message-ID: <4E7218A0.2020309@eurekelettronica.it> (raw)
In-Reply-To: <4E71CDB2.4000205@freescale.com>
Sorry for intrusion in this discussion, but:
Huang Shijie wrote:
>> channels are being used concurrently. The GPMI driver will bail out
>> with the timeout error while the MMC driver obviously has no timeout
>> check for this situation.
>>
>> I can mostly rule out HW problems, because the same board works
>> perfectly well with WindowsCE (tested with a copy operation between
>> flash and SD card).
>>
>>
>> Lothar Waßmann
@Lothar: Probably WinCE with a copy operation between flash and SD is
not reliable as synchronous as opposed dd command in the previous mail.
dd is sync when: dd if=/dev/mtd... of=/dev/mmc...
dd is async when:
# dd if=/dev/mtd of=/mnt/somewhere/file1 &
# dd if=/mnt/somewhere/file2 of=/dev/mmc &
Or even the worst scenario:
# dd if=/dev/mtdX of=/dev/null &
# dd if=/dev/urandom of=/dev/mmcX &
# dd if=/dev/mmcX of=/dev/null &
# dd if=/dev/urandom of=/dev/mtdX &
Just my .2 cents.
Best regards,
--
,,,
(o o)
======oOO==(_)==OOo======
Gianluca Renzi
R&D
phone: +39.0542.609120
fax: +39.0542.609212
.oooO Oooo.
======( )==( )=======
\ ( ) /
\_) (_/
WARNING: multiple messages have this Message-ID (diff)
From: gianlucarenzi@eurekelettronica.it (gianluca)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28
Date: Thu, 15 Sep 2011 17:24:16 +0200 [thread overview]
Message-ID: <4E7218A0.2020309@eurekelettronica.it> (raw)
In-Reply-To: <4E71CDB2.4000205@freescale.com>
Sorry for intrusion in this discussion, but:
Huang Shijie wrote:
>> channels are being used concurrently. The GPMI driver will bail out
>> with the timeout error while the MMC driver obviously has no timeout
>> check for this situation.
>>
>> I can mostly rule out HW problems, because the same board works
>> perfectly well with WindowsCE (tested with a copy operation between
>> flash and SD card).
>>
>>
>> Lothar Wa?mann
@Lothar: Probably WinCE with a copy operation between flash and SD is
not reliable as synchronous as opposed dd command in the previous mail.
dd is sync when: dd if=/dev/mtd... of=/dev/mmc...
dd is async when:
# dd if=/dev/mtd of=/mnt/somewhere/file1 &
# dd if=/mnt/somewhere/file2 of=/dev/mmc &
Or even the worst scenario:
# dd if=/dev/mtdX of=/dev/null &
# dd if=/dev/urandom of=/dev/mmcX &
# dd if=/dev/mmcX of=/dev/null &
# dd if=/dev/urandom of=/dev/mtdX &
Just my .2 cents.
Best regards,
--
,,,
(o o)
======oOO==(_)==OOo======
Gianluca Renzi
R&D
phone: +39.0542.609120
fax: +39.0542.609212
.oooO Oooo.
======( )==( )=======
\ ( ) /
\_) (_/
next prev parent reply other threads:[~2011-09-15 15:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-08 2:47 [PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28 Huang Shijie
2011-09-08 2:47 ` Huang Shijie
2011-09-08 2:47 ` [PATCH v12 1/3] MTD : add the common code for GPMI-NAND controller driver Huang Shijie
2011-09-08 2:47 ` Huang Shijie
2011-09-08 2:47 ` [PATCH v12 2/3] MTD : add helper functions library and header files for GPMI NAND driver Huang Shijie
2011-09-08 2:47 ` Huang Shijie
2011-09-08 2:47 ` [PATCH v12 3/3] MTD : add GPMI-NAND driver in the config and Makefile Huang Shijie
2011-09-08 2:47 ` Huang Shijie
2011-09-09 19:56 ` [PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28 Koen Beel
2011-09-09 19:56 ` Koen Beel
2011-09-11 10:31 ` Artem Bityutskiy
2011-09-11 10:31 ` Artem Bityutskiy
2011-09-12 4:34 ` Huang Shijie
2011-09-12 4:34 ` Huang Shijie
2011-09-15 7:55 ` Lothar Waßmann
2011-09-15 7:55 ` Lothar Waßmann
2011-09-15 8:26 ` Huang Shijie
2011-09-15 8:28 ` Huang Shijie
2011-09-15 8:28 ` Huang Shijie
2011-09-15 9:12 ` Lothar Waßmann
2011-09-15 9:12 ` Lothar Waßmann
2011-09-15 9:20 ` Huang Shijie
2011-09-15 9:20 ` Huang Shijie
2011-09-26 7:42 ` Huang Shijie
2011-09-26 7:42 ` Huang Shijie
2011-09-15 10:04 ` Huang Shijie
2011-09-15 10:04 ` Huang Shijie
2011-09-15 15:24 ` gianluca [this message]
2011-09-15 15:24 ` gianluca
2011-09-16 7:50 ` Lothar Waßmann
2011-09-16 7:50 ` Lothar Waßmann
2011-09-16 13:43 ` Lothar Waßmann
2011-09-16 13:43 ` Lothar Waßmann
2011-09-18 11:40 ` Huang Shijie
2011-09-18 11:40 ` Huang Shijie
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