Il 24/10/2017 07:51, Cédric Le Goater ha scritto:
On 10/17/2017 11:16 AM, Andrea Scian - DAVE Embedded Systems wrote:
On 10/17/2017 10:20 AM, Andrea Scian - DAVE Embedded Systems wrote:
Il 17/10/2017 10:18, Cédric Le Goater ha scritto:
On 10/17/2017 09:36 AM, Andrea Scian - DAVE Embedded
On 10/17/2017 10:20 AM, Andrea Scian - DAVE Embedded Systems wrote:
Il 17/10/2017 10:18, Cédric Le Goater ha scritto:
On 10/17/2017 09:36 AM, Andrea Scian - DAVE Embedded Systems wrote:
Dear all,
I'm working on an iMX6 based board with a PCA9555 which is used both to drive
LEDs and m
Il 17/10/2017 10:18, Cédric Le Goater ha scritto:
On 10/17/2017 09:36 AM, Andrea Scian - DAVE Embedded Systems wrote:
Dear all,
I'm working on an iMX6 based board with a PCA9555 which is used both to drive
LEDs and manage some GPIOs.
The PCA9555 chip and the PCA955[0-3] chips have diff
send a patch to fix this (I'm thinking about
having an array of GPIO index to map offset -> pca955x->leds[] index or
just register all pins as GPIOs and then just report the busy state)
WDYT?
Kind Regards,
--
Andrea SCIAN
*DAVE Embedded Systems*
via Talponedo 29/A 33080 Po
Il 18/08/2015 05:25, Han Xu ha scritto:
i.MX6QP and i.MX7D BCH module integrated a new feature to detect the
bitflip number for erased NAND page. So for these two platform, set the
erase threshold to gf/2 and if bitflip detected, GPMI driver will
correct the data to all 0xFF.
Please also fix t
Il 04/08/2015 09:21, Richard Weinberger ha scritto:
Andrea,
Am 04.08.2015 um 09:02 schrieb Andrea Scian:
I'm not sure whether introducing a read-before-write check is the best solution.
At least we need hard numbers for slow/old SLC NANDs too.
We can enable the feature only for MLC, AFA
Michal,
Kedar,
Any feedback regarding my patch?
Have you ever experienced such a problem?
Andrea SCIAN
*DAVE Embedded Systems*
via Talponedo 29/A 33080 Porcia (PN) - Italy
Telephone: +39.0434.921215
Telefax: +39.0434.1994030
web: www.dave.eu <http://www.dave.eu>
Il 24/07/2015 06:15,
Boris,
sorry for the later review.
I'm trying to run your patch on our systems. See below
Il 31/07/2015 09:10, Boris Brezillon ha scritto:
On Thu, 30 Jul 2015 19:34:53 +0200
Boris Brezillon wrote:
Add two helper functions to help NAND controller drivers test whether a
specific NAND region i
Richard,
Il 03/08/2015 21:32, Richard Weinberger ha scritto:
Am 03.08.2015 um 15:39 schrieb Andrea Scian:
I think I can find some time to do some performance tests on real hardware.
Can you please help me in finding:
- which benchmark to use (currently I'm using bonnie++ on UBIFS, maybe
Il 03/08/2015 14:42, Boris Brezillon ha scritto:
Adding Artem and Richard in the loop.
thanks ;-)
On Mon, 3 Aug 2015 13:16:02 +0200
Andrea Scian wrote:
Dear Boris,
Il 31/07/2015 18:27, Boris Brezillon ha scritto:
On Fri, 31 Jul 2015 18:19:30 +0200
Andrea Scian wrote:
Il 31/07/2015
Dear Boris,
Il 31/07/2015 18:27, Boris Brezillon ha scritto:
On Fri, 31 Jul 2015 18:19:30 +0200
Andrea Scian wrote:
Il 31/07/2015 16:10, Boris Brezillon ha scritto:
On Fri, 31 Jul 2015 15:40:13 +0200
Andrea Scian wrote:
Boris,
Il 31/07/2015 12:32, Boris Brezillon ha scritto:
Hi Andrea
Il 31/07/2015 16:10, Boris Brezillon ha scritto:
On Fri, 31 Jul 2015 15:40:13 +0200
Andrea Scian wrote:
Boris,
Il 31/07/2015 12:32, Boris Brezillon ha scritto:
Hi Andrea,
Adding Han in Cc.
On Fri, 31 Jul 2015 12:07:21 +0200
Andrea Scian wrote:
Dear Boris,
Il 30/07/2015 19:34, Boris
Boris,
Il 31/07/2015 12:32, Boris Brezillon ha scritto:
Hi Andrea,
Adding Han in Cc.
On Fri, 31 Jul 2015 12:07:21 +0200
Andrea Scian wrote:
Dear Boris,
Il 30/07/2015 19:34, Boris Brezillon ha scritto:
The default NAND read functions are relying on an underlying controller
to correct
Boris,
Il 31/07/2015 12:21, Boris Brezillon ha scritto:
Hi Andrea,
On Fri, 31 Jul 2015 12:06:32 +0200
Andrea Scian wrote:
Dear Boris,
thanks for pointing this out again.
I'm on the same topic too, using iMX6 (I'll try to test you patch on the
next days, if I found some
before
reporting an ECC failure.
I'm still wondering if chip->ecc.strength is the right threshold.
Did you see my comments here [1]? WDYT?
Maybe we can have this discussion in a separate thread, if you want ;-)
Kind Regards,
--
Andrea SCIAN
DAVE Embedded Systems
f the lower layer already
did the check for you (e.g. if you have an iMXQP as we saw in latest
days), but I think it's a minor one, because you'll face this situation
very very unlikely.
--
Andrea SCIAN
DAVE Embedded Systems
--
To unsubscribe from this list: send the
mounts successfully
Maybe I'm a bit OT regarding this patch, but I think this is an
interesting point to discuss about.
Any comment is welcome
Kind Regards,
--
Andrea SCIAN
DAVE Embedded Systems
[1] http://lists.infradead.org/pipermail/linux-mtd/2015-July/060168.html
[2] http://lists.i
this patch?
Kind regards and TIA,
--
Andrea SCIAN
DAVE Embedded Systems
[1] http://article.gmane.org/gmane.linux.drivers.mtd/52216
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Hi Alexandre,
On 12/06/2015 09:42, Alexandre Belloni wrote:
On 10/06/2015 at 17:21:57 +0200, Andrea Scian wrote :
I would return -EINVAL here because the result might still pass
rtc_valid_tm() but be outdated.
At first look I agree with you, but a bit later they say:
/* the clock can give
Dear Alexandre,
On 08/06/2015 17:42, Alexandre Belloni wrote:
Hi,
This seems ok, a few comments below:
On 26/05/2015 at 10:17:40 +0200, r...@dave-tech.it wrote :
From: Andrea Scian
I'm using PCF2127 in a custom ARM-based board and, by looking into PCF2127
datasheet
I've found t
Il 12/04/2015 23:01, Richard Weinberger ha scritto:
Am 12.04.2015 um 22:42 schrieb Andrea Scian:
Il 12/04/2015 18:55, Richard Weinberger ha scritto:
Am 12.04.2015 um 18:43 schrieb Boris Brezillon:
On Sun, 12 Apr 2015 18:09:23 +0200
Richard Weinberger wrote:
Am 12.04.2015 um 16:12 schrieb
g something more that 1 value (or having
more than one sysfs entry ;-) )
Kind Regards,
Andrea SCIAN
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Andrea SCIAN
DAVE Embedded Systems
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Il 08/04/2015 12:34, Richard Weinberger ha scritto:
> Am 02.04.2015 um 21:19 schrieb Andrea Scian:
>> Il 02/04/2015 19:54, Richard Weinberger ha scritto:
>>> Hi!
>>>
>>> Am 02.04.2015 um 19:34 schrieb Andrea Scian:
>>>> Richard,
>>>
ectory inside mtd-utils, I think it's better
to start creating tests there, as userspace tools, whenever this is
possible.
Do we have any reason to have MTD tests as kernel module? (performance?)
Kind Regards,
--
Andrea SCIAN
DAVE Embedded Systems
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Il 02/04/2015 19:54, Richard Weinberger ha scritto:
> Hi!
>
> Am 02.04.2015 um 19:34 schrieb Andrea Scian:
>> Richard,
>>
>> Il 29/03/2015 14:13, Richard Weinberger ha scritto:
>>> + mutex_lock(&ubi->buf_mutex);
>>> + err = ubi_
between 1E-7 (for brand new devices) and 1E-4 (for devices with
1k-2k P/E cycle after 100k-300k read-without-P/E)
Having a few bitflips on a block read is more that usual and current ECC
can correct more that 16 bit error over 512/1KiB.
WDYT?
Kind Regards,
--
Andrea SCIAN
DAVE Embedded Systems
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