On 4/2/2013 11:43 PM, Junfeng Feng wrote:
Hello there,
I am right now adding MMC/SD card support for our proprietary board
using DM6446.
The linux version which I am using is 2.6.31.12.
For the davinci_mmc.c, I have seen the code has been changed to :
/‘r = edma_alloc_slot
Hello there,
I am right now adding MMC/SD card support for our proprietary board
using DM6446.
The linux version which I am using is 2.6.31.12.
For the davinci_mmc.c, I have seen the code has been changed to :
'r = edma_alloc_slot(EDMA_CTLR(host-txdma), EDMA_SLOT_ANY);'
What if I
Hi all,
I have an application that is writing 2 D1 h264 videos on the SD card and I see
some slowdown on the thread that is saving the videos on sd card, when it is
mounted with the sync option.
I mean with a bitrate lesser than 1 MByte (2 D1 h264 videos), using a class 10
SD card mounted
On Tue, Jul 12, 2011 at 12:17 PM, Bosi Daniele daniele.b...@mta.it wrote:
Hi all,
I have an application that is writing 2 D1 h264 videos on the SD card and I
see some slowdown on the thread that is saving the videos on sd card, when
it is mounted with the sync option.
I mean
-source-boun...@linux.davincidsp.com
[mailto:davinci-linux-open-source-boun...@linux.davincidsp.com] Per conto di
Enrico Butera
Inviato: martedì 12 luglio 2011 17.12
A: davinci-linux-open-source@linux.davincidsp.com
Oggetto: Re: bad sd card write performance
On Tue, Jul 12, 2011 at 12:17 PM, Bosi
On Tue, Jul 12, 2011 at 5:40 PM, Bosi Daniele daniele.b...@mta.it wrote:
Enrico,
your one is not a silly question. I tested both write and fwrite
functions, reaching the best performances with fwrite that AFAIK is
buffered.
I also tried splitting the write on the file pointer / file
Hey,
I want to find whether my DM6446 kernel will work with the SD card
device drivers using Dynamically Loadable Kernel Module ?
Also suggest some patch files to link between the fedora and monta vista
linux ?
Please do reply asap.
--
Regards
Swapnil Ashtekar
Hi Swapnil,
On Fri, Oct 29, 2010 at 13:27:30, Swapnil Ashtekar wrote:
Hey,
I want to find whether my DM6446 kernel will work with the SD
card device drivers using Dynamically Loadable Kernel Module ?
Are you testing with latest 2.6.36 kernel? If you faced any issues,
you can report
I copied my hello world program in SD card.
Then putted that into Dm6446
but not able to access the files. sd card is already mounted.
How to access the contents of sd card.
#cd mnt
# ls
sd
#cd sd
#ls
#
this is what i get.
please reply asap.
--
Regards,
Chetan Arvind Patil,
+919970018364
Hi,
I am using the git kernel 2.6.30 on a dm6446 board based on the evm. I have
a process copying files periodically over to a microSD card which has an
ext3 filesystem. The copy rate is about 4 MB at a time followed by 40
seconds of sleep. When I have other processes also running on the board,
Test 1
- EVMDM365 from Spectrum Digital
- linux-2.6.32-rc2 from DVSDK v3.10 (using davinci_mmc.c)
- Sandisk 2GB card
- 25MHz bus freq
- 4bit bus width
- DMA enabled
- dd if=/dev/zero of=/dev/mmcblk0p1 bs=1M
- top -d 1
- mmcqd max cpu consumption is 40~50%!!!
Test 2
- EVMDM6446 from
I am having an issue with sd card in the scenario when it is ejected out and
reinserted while files are being written to it. My application is always
writing 3-4 files to the card and when device node is removed(on ejection), the
application unmounts the mmc/sd and when the device nodes comes
From: Vipin Bhandari vipin.bhand...@ti.com
The DA830/OMAP-L137 EVM has GPIO based card detection logic, but the current
code does not use it.
Add support for GPIO based card detection to avoid reading the card to see
if a card is present or not.
Signed-off-by: Vipin Bhandari
From: Vipin Bhandari vipin.bhand...@ti.com
The merge for 2.6.34 brings in 8-bit support to the DaVinci MMC/SD driver.
This patch updates the platform data for DA830/OMAP-L137 EVM to use 8-wire
support available in the driver.
Signed-off-by: Vipin Bhandari vipin.bhand...@ti.com
Signed-off-by:
Priya,
I believe the SD card reader should have a status indication
mechanism that needs to be used for card detection purposes. If it is a
proprietary implementation then you would have to write a driver on Linux to
interface with the mechanism or get the related code from
Hi,
I am working on a custom board which has TI Davinci DM6467 Processor running
Linux 2.6.10 as the host processor to which we have a USB2640 hub controller
connected on the USB bus. This hub controller has a built in SD card
controller. So basically this hub supports two USB devices and one
Sekhar Nori nsek...@ti.com writes:
From: Vipin Bhandari vipin.bhand...@ti.com
The DA830/OMAP-L137 EVM has GPIO based card detection logic, but the current
code does not use it.
Add support for GPIO based card detection to avoid reading the card to see
if a card is present or not.
From: Vipin Bhandari vipin.bhand...@ti.com
The merge for 2.6.34 brings in 8-bit support to the DaVinci MMC/SD driver.
This patch updates the platform data for DA830/OMAP-L137 EVM to use 8-wire
support available in the driver.
Signed-off-by: Vipin Bhandari vipin.bhand...@ti.com
Signed-off-by:
From: Vipin Bhandari vipin.bhand...@ti.com
The DA830/OMAP-L137 EVM has GPIO based card detection logic, but the current
code does not use it.
Add support for GPIO based card detection to avoid reading the card to see
if a card is present or not.
Signed-off-by: Vipin Bhandari
...@linux.davincidsp.com] On Behalf Of
Andrea Gasparini
Sent: 11 September 2009 15:42
To: davinci-linux-open-source@linux.davincidsp.com
Subject: davinci git and RootFs on SD card.
Hi,
I finally tried the mighty davinci git kernel. ;) I'm able to make it start on
EVM and on my board, that's ok.
unfortunately, I'm
Hi,
I finally tried the mighty davinci git kernel. ;)
I'm able to make it start on EVM and on my board, that's ok.
unfortunately, I'm having some trouble in taking the rootfs from the SD
card.
I found that with ip=dhcp in the cmdline, it handles correctly the mmc
slot and recognizes the card
; davinci-linux-open-source@linux.davincidsp.com
Subject: RE: davinci git and RootFs on SD card.
Try adding a rootdelay=1 option to your kernel command line, where 1 is the
number of seconds to wait before mounting the root filesystem.
Mike.
-Original Message-
From: davinci-linux-open
Hi,
Or use rootwait so you don't have to guess how long of a delay to use.
From Documentation/kernel-parameters.txt:
It worked, nice!
thanks a lot to both of you! :)
--
Andrea Gasparini
ImaVis S.r.l.
web: www.imavis.com
___
Hi,
We have met with this problem on DM355 EVM board too. Git kernel hasn't saw the
plugged SD card. But we have tried to pushing the SD card in the socket under
booting, in this case kernel recognised the SD card and loaed the filesystem
without any error. Therfore I think that the problem
On Monday 31 August 2009, Harshada Pendse wrote:
I want to detect the SD card size from my application.
/sys/block/mmcblk0/size
___
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Davinci-linux-open-source@linux.davincidsp.com
http://linux.davincidsp.com
Hello Siddharth,
Thanks for input.
Where will I get the information about the structure statvfs we pass to the
function. How to extract the block count from the f_blocks.
Thanks,
Harshada
___
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Harshada Pendse wrote:
Hello All,
I want to detect the SD card size from my application. We are mounting
file system thr SD card only,
Please let me know if there is any API or command available.
You could use df -k mounted_dir from command line or use statvfs() to
get the file system
Hello All,
I want to detect the SD card size from my application. We are mounting file
system thr SD card only,
Please let me know if there is any API or command available.
Thanks,
Harshada
___
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Davinci-linux
On Monday 03 August 2009, kirthika varadarajan wrote:
Is there in any other thing which i have to do to detect MMC 1.
Yeah, I reported the same problem.
Unrelated: if you're using the ARM JTAG connector, SRST is
nonfunctional. The CPLD is just programmed that way. Easy
enough to fix, given
-linux-open-source@linux.davincidsp.com
Subject: Re: DM365 + sd card (mmc1) is not detected
On Monday 03 August 2009, kirthika varadarajan wrote:
Is there in any other thing which i have to do to detect MMC 1.
Yeah, I reported the same problem.
[Sandeep] actually there was a patch from Vipin and i
We bought recently DM365evm from Spectrum.
There are 2 SD slot.
When i insert SD card MMC0 is detected.
mmcblkp0 is shown.
Another SD slot is not detected(MMC1)
I checked board-dm365-evm as well as mux_cfg also. Its all ok.
Is there in any other thing which i have to do to detect MMC 1
I was testing the SD card support in the latest linux-davinci GIT tree.
I had read a file from SD and then written a file. Before removing the
SD card, I unmounted it (ext2 FS).
Here is the console output: umount command, info that the card removal
was detected, and the first bit of the kernel
[mailto:davinci-linux-open-source-boun...@linux.davincidsp.com] On Behalf Of
Yusuf Caglar AKYUZ
Sent: 18 May, 2009 11:16 AM
To: David Brownell
Cc: davinci-linux-open-source@linux.davincidsp.com
Subject: Re: Booting dm355 from SD Card
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
David Brownell
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
David Brownell wrote:
On Sunday 17 May 2009, Yusuf Caglar AKYUZ wrote:
Because I couldn't find any UBL implementation which reads u-boot
from SD Card, or at least mentioning of it. I was pretty sure that
everything was ok, but I should re-check
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Venkatachala Upadhya wrote:
Hello,
Hi,
See the below post, in the mailing list. If that helps!
http://linux.omap.com/pipermail/davinci-linux-open-source/2009-March/011957.html
That was my starting point, but no success here yet. Thanks
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi everyone,
I'm trying to boot dm355 from an SD card. Only resource I have found
is [1]. Tools mentioned at [1] seems to format and program
the SD card correctly and evm is at least not toggling GIO61 but I
see nothing on serial console and board
On Sunday 17 May 2009, Yusuf Caglar AKYUZ wrote:
does anyone have pointers to boot dm355 from an SD card without any
nand involvement?
http://wiki.davincidsp.com/index.php?title=DM355_SD_card_boot_and_flash_utility
I don't know why you think that needs NAND in any way.
You must be doing
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
David Brownell wrote:
On Sunday 17 May 2009, Yusuf Caglar AKYUZ wrote:
does anyone have pointers to boot dm355 from an SD card without any
nand involvement?
http://wiki.davincidsp.com/index.php?title=DM355_SD_card_boot_and_flash_utility
I
On Sunday 17 May 2009, Yusuf Caglar AKYUZ wrote:
Because I couldn't find any UBL implementation which reads u-boot
from SD Card, or at least mentioning of it. I was pretty sure that
everything was ok, but I should re-check since you say it works.
http://sourceforge.net/project/showfiles.php
On Thu, 2009-05-14 at 10:51 +0800, Liu Yebo wrote:
Hi,
I've been doing some testing with SD card writes on the our dm355
board.That looks that the performance is dismal, that is pretty poor.
i was getting speeds of around 2-3MB/s for write.
Now i have enable high speed SD support.Note
On Wednesday 13 May 2009, Liu Yebo wrote:
Hi,
I've been doing some testing with SD card writes on the our
dm355 board.That looks that the performance is dismal, that
is pretty poor. i was getting speeds of around 2-3MB/s for write.
Write performance can be gated by card performance; not all
Subject: Re: DM355 SDIO performance or sd card clock over 27mhz
On Thu, 2009-05-14 at 10:51 +0800, Liu Yebo wrote:
Hi,
I've been doing some testing with SD card writes on the our dm355
board.That looks that the performance is dismal, that is pretty poor.
i was getting speeds of around 2-3MB/s
Hi,
I've been doing some testing with SD card writes on the our dm355 board.That
looks that the performance is dismal, that is pretty poor. i was getting speeds
of around 2-3MB/s for write.
Now i have enable high speed SD support.Note that on the dm355 cards won't
clock over 27 MHZ because
Hi I am using sd card to store pictures and other relevant data in my
system. I hoped it will copy faster, but it is not a problem. I have pretty
bigger problem to umount sdcard. It has FAT file system. And it takes about
5 minutes to umount. I have tried to pull out card during umount
Try mounting it with the sync option and seeing how long it takes to
unmount then.
Andrew
Ondrej Pindroch wrote:
Hi I am using sd card to store pictures and other relevant data in my
system. I hoped it will copy faster, but it is not a problem. I have
pretty bigger problem to umount sdcard
Hi,
I made next release of DM355 SD card boot and flash utility.
The utility allows to store boot data on SD card, boot DM355 from it and
install software on flash.
It can be useful for fast card restore (comparing to serial restore)
without JTAG using only Linux, or not using host computer
My try to hack and find location of kernel in binary version and replace it.
Or wait some days. I am preparing customizable source code release.
On Thu, Feb 19, 2009 at 11:18 AM, Vilmos Varga vva...@yahoo.com wrote:
Hi Constantine,
I have tried your SD card support on our custom board
Hi,
I added SD card support to DM35x_FlashAndBootUtils_1_10.
I can boot, test, flash dm355 board from SD card.
The code currently it under heavy work (a working in 270 MHz upgrade)
and is not ready for clean release.
If anybody interesting in raw code, contact me and I'll publish it.
You may find
I have preliminary utility for Booting and Flashing DM355 from SD Card.
You can just boot Linux from SD card and install Linux on the flash.
As option you may totally erase the flash.
Usage:
1. download 5MB SD card image:
wget http://www.linuxdriver.co.il/ti/dm355/dm355_boot.sdcard
2. put
Hello, Everyone,
Now I have two qustions about DM6446 EVM.
the First is:I want to know how the OS can detect the MMC/SD when the system
is working.
We know that the MMC/SD Card Detect pin is connected to the MSP430
P2.1/INCLK pin. So I want to know the reasons about it.
Because on our board we
Hello, Everyone,
Now I have two qustions about DM6446 EVM.
the First is:I want to know how the OS can detect the MMC/SD when the system
is working.
We know that the MMC/SD Card Detect pin is connected to the MSP430
P2.1/INCLK pin. So I want to know the reasons about it.
Because on our board we
David Brownell [EMAIL PROTECTED] writes:
From: David Brownell [EMAIL PROTECTED]
Support card detect and writeprotect switches on DM355 EVM.
Signed-off-by: David Brownell [EMAIL PROTECTED]
Thanks, applied.
---
Grr, this is the bugfixed version ... forgot to add the right
base to the gpio
On Thursday 11 December 2008, Kevin Hilman wrote:
I'd be curious if it works with the DMA fixes and cleanups from Troy
Kisky that I pushed just before this patch.
No ... and I double checked that the right RX and TX dma channels
are listed (for mmc1, they're new) and don't need muxing.
The
Hi All:
I find when write to SD card on Davinci, mmcqd eats 70% of the cpu!!,
which cause audio and other tasks don't work well.
My configuration is below
- DVEVM6446 from Spectrum Digital
- linux-2.6.10_mvl401.patch47 from Montavista
- Various SD card
- 4bit bus width, DMA enabled, default
mmci irq arrived with BSYDNE set, but DATDNE,TRNDNE not set
Sorry, should be mmci irq arrived with BSYDNE set, but RSPDNE not set.
Regards
Eddy
___
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Davinci-linux-open-source@linux.davincidsp.com
On Wednesday 10 December 2008, Eddy Zhao wrote:
So, I have several questions:
I think it's fairly evident that the current davinci_mmc.c driver
has some issues to resolve yet. :(
That seems to apply both to MontaVista's 2.6.10 code and to the
current GIT version. Do you know if these problems
From: David Brownell [EMAIL PROTECTED]
Support card detect and writeprotect switches on DM355 EVM.
Signed-off-by: David Brownell [EMAIL PROTECTED]
---
Against current DaVinci GIT. MMC0 doesn't seem to talk to
me, but MMC1 at least detects the card ... before it wedges
trying to read the
From: David Brownell [EMAIL PROTECTED]
Support card detect and writeprotect switches on DM355 EVM.
Signed-off-by: David Brownell [EMAIL PROTECTED]
---
Grr, this is the bugfixed version ... forgot to add the right
base to the gpio range passed from dm355evm_msp.
And news on the MMC1 partially
Hi All,
Does DM6446 support Micro SD card? If so, what about device driver?
As far as I know, there is no Micro SD device driver in Davinci linux kernel.
Please, provide me with the detailed information about Micro SD card support.
Thank you in advance.
Best Regards,
Seung Youl
:24 AM
To: davinci-linux-open-source@linux.davincidsp.com
Subject: Does DM6446 support Micro SD card?
Hi All,
Does DM6446 support Micro SD card? If so, what about device driver?
As far as I know, there is no Micro SD device driver in Davinci linux
kernel.
Please, provide me with the detailed
The DM355 RBL supports boot from SD card. The issue is that the UBL
distributed as part of the PSP only supports NAND.If the UBL source were
modified to read from the SD card, there is no reason that everything could
come from the SD card.
Regards,
Steven Gorwood
for SD card boot. But, can I boot from the
SD-Card with all UBL, U-Boot and kernel in it with the NAND flash not
involved at all?
I'd read some posts in the mail list that someone had come close to doing
it.
Thanks,
Madhu
On Thu, Oct 16, 2008 at 5:12 PM, Phil Quiney [EMAIL PROTECTED]
wrote
Hi Jon,
In fact with the old LSP and with 4G SD card, at /proc/meminfo I verify
that Dirty is climbing from 0 until my application hangs at 5KB.
I also verified that when the application hangs, it tries to write some of
this buffered data to the card (Dirty begins to fall
] On Behalf Of António
Silva
Sent: 11 September 2008 19:01
To: Chris Stillson
Cc: Davinci-linux-open-source@linux.davincidsp.com
Subject: Re: MMC/SD card capacity limits
Ok, but are SDHC card supported and recognized? I have a dm355 board
and i
I believe I was able to do this without locking up, but I had
to use the SDIO driver in patch set 45 and an SDHC class6
device to get higher throughput. I think Chris is correct
about you not having enough throughput.
If you cat /proc/meminfo, have a look at the Dirty: and Writeback:
Ok,
I will try out this proposals but maybe I have to update to the new release
of LSP and apply some kernel patches because the kernel does not recognize
SDHC card (8G SDHC class 6).
Thanks for those replies,
A.Silva
On Fri, Sep 12, 2008 at 9:14 AM, Jon Povey [EMAIL PROTECTED]wrote:
I
-open-source@linux.davincidsp.com
Subject: Re: MMC/SD card capacity limits
Hi Jon,
First of all, thanks for your reply.
I want to ask you a few questions:
1. The SDHC 8G memory card is class6? From which brand? (My memory
@linux.davincidsp.com
Subject: RE: MMC/SD card capacity limits
1, Ours is also Kingston class 6, this one:
http://www.dabs.com/ProductView.aspx?Quicklinx=4QB3
2. The LSP is 1_30_00_23, but we are also running SDIO driver patches from TI.
We had a 4GB SDHC card working on the EVM but are now using our
Hi all,
I am recording the video stream into a SD card, but after running a couple
of minutes, the encoder application hangs with a process state code D
(Uninterruptible sleep (usually IO)).
I have installed the previous version of the dvsdk and lsp ##_1_30_00_23 and
the SD card is formatted
[EMAIL PROTECTED]:
Hi all,
I am recording the video stream into a SD card, but after running a couple
of minutes, the encoder application hangs with a process state code D
(Uninterruptible sleep (usually IO)).
I have installed the previous version of the dvsdk and lsp ##_1_30_00_23 and
the SD
António Silva [EMAIL PROTECTED]:
Hi all,
I am recording the video stream into a SD card, but after running a
couple
of minutes, the encoder application hangs with a process state code D
(Uninterruptible sleep (usually IO)).
I have installed the previous version of the dvsdk and lsp
Hi Ivan,
I have downloaded sd driver source code as per below mail.
But somehow I am not able to compile u-boot.
I am not clear about patch you are talking about.
Kindly help me about how to use sd-driver package in u-boot.
Thanks in advance.
Jitendra,
You might find logging onto the Neuros OSD SVN and downloading their
version of UBOOT more useful, it has SD card, framebuffer and a bunch of
other things working. You should be able to get their mode working on a
UBOOT release of at least 1.3.4
Regards,
Andrew
On Thu, 2008-09-04
HI all,
Does anybody knows if in the mmc/sd driver there is any capacity limit for
SD cards?
From my survey i verified that some people have testes with 8G sd cards, but
32GB sd cards are appearing just now.
Thanks in advance,
A.Silva
___
there is SD and SDHC
SD tops out at 2 or maybe 4 GB
SDHC starts at 4 and tops at 32GB officially, but could theoretically be larger.
Chris
2008/9/3 António Silva [EMAIL PROTECTED]:
HI all,
Does anybody knows if in the mmc/sd driver there is any capacity limit for
SD cards?
From my survey
-linux-open-source@linux.davincidsp.com
Subject: RE: SD card performance results
Hi Chase,
Thanks for your response.
I am not able to find patch 45.
Can you pls share with me or provide me the link?
I am using 2 GB SanDisk SD card and 4 GB SDHC card of class 4 and 6.
I am getting same
Jitendra,
You should be able to find this in the driver data sheet. However, on
the DM6446 there are updated patches in patchset 45 that will
significantly increase the SD performance. I saw write throughput up to
around 7.625MB/sec depending on the SD card being used.
Sincerely,
Chase
Hi Chase,
Thanks for your response.
I am not able to find patch 45.
Can you pls share with me or provide me the link?
I am using 2 GB SanDisk SD card and 4 GB SDHC card of class 4 and 6.
I am getting same performance results in all above cards.
Can you share with us different flavors
Hi All,
I am working on SD card for 6446.
Anybody have benchmark results for sd card write/read speeds.
Regards,
Jitendra
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Ivan,
Was this code ever tidied up or posted upstream?
Best Regards,
Andrew
On Fri, 2007-08-31 at 06:09 +0300, Ivan Tonchev wrote:
OK Guys,
Here's the SD card support from u-boot. I received permission from TI
(thanks Roger!) to release this code under the Common Public Licence.
I
On Sunday 27 April 2008 17:09, Chris Stillson wrote:
2) on partition 3, do a mkfs.ext2.
I know not to use a logging fs on an sd card, but I would be
interested in other ideas. jaffs perhaps? Ext2 does work.
Here is a good link that will make you tear your hair out :)
http://ask.slashdot.org
I am trying to create a bootable SD card. Do the following steps make sense?
1) using (fdisk, cfdisk, ???) create 3 partitions on the card:
p1)a partition for the UBL (uboot)
p2)a partition for uImage
p3)a partition for the filesystem
2) on partition 3, do a mkfs.ext2.
I know
I am trying to create a bootable SD card. Do the following steps make sense?
1) using (fdisk, cfdisk, ???) create 3 partitions on the card:
p1)a partition for the UBL (uboot)
p2)a partition for uImage
p3)a partition for the filesystem
2) on partition 3, do a mkfs.ext2.
I know
On Friday 25 April 2008 10:55, Chris Stillson wrote:
I am trying to create a bootable SD card. Do the following steps make
sense?
I guess I'm not following you.
From the T.I. documentation:
‘00’ indicates ARM boots from ROM (NAND Flash).
‘01’ indicates that ARM boots from EMIFA (NOR Flash
On Fri, Apr 25, 2008 at 9:37 AM, Lloyd Sargent [EMAIL PROTECTED] wrote:
On Friday 25 April 2008 10:55, Chris Stillson wrote:
I am trying to create a bootable SD card. Do the following steps make
sense?
I guess I'm not following you.
From the T.I. documentation:
'00' indicates ARM boots
On Thursday 24 April 2008 00:11, Peter Sommerfeld wrote:
I should look at porting the git kernel to DM355. Using 2.6.10 drivers
feels old-fashioned at times. If it's been ported to DM6446, and the
MV kernels have the DM6446/DM355 register differences coded, than I
guess it shouldn't be huge
Hi,
I've been doing some testing with SD card writes on the DM355 devkit.
The performance is dismal.
I am using a kernel retrieved from TI's site on Apr 20/08. I built the
kernel with the only change to the config being the inclusion of the
resizer driver.
On Windows Vista, my 150x 2GB SD card
This sounds familiar .
On Wed, 2008-04-23 at 14:52 -0400, Peter Sommerfeld wrote:
Hi,
I've been doing some testing with SD card writes on the DM355 devkit.
The performance is dismal.
I am using a kernel retrieved from TI's site on Apr 20/08. I built the
kernel with the only change
I am using a kernel retrieved from TI's site on Apr 20/08. I built the
kernel with the only change to the config being the inclusion of the
resizer driver.
On Windows Vista, my 150x 2GB SD card gets a write speed of 4 GB/s
over a 128 MB file.
It's hard to believe those numbers are correct
Peter,
The issue you mentioned w.r.t SD card performance will be resolved with a new
patch. The patch is still under testing and you can contact your local TI
Engineer for the date when it will be available for customers.
Another approach could be that you could take patch45 from
.
On Windows Vista, my 150x 2GB SD card gets a write speed of 4 GB/s
over a 128 MB file.
It's hard to believe those numbers are correct. You're probably hitting the
disk cache at 4GB/s with your 128MB file (and then not even that fast -
there are probably gross rounding errors because the actual
Hi Swami,
Great, I eagerly await the patch.
I will have a look at patch45. Thanks for this valuable info!
-- Pete
On Wed, Apr 23, 2008 at 11:16 PM, Subbrathnam, Swaminathan
[EMAIL PROTECTED] wrote:
Peter,
The issue you mentioned w.r.t SD card performance will be resolved with a
new
I have a ext2 formated 2 GB SD card and want to mount it on the
DaVinci DM355 board.
Using the general form:
# cd /
# mkdir 2gbsd
# mount device /2gbsd
What device do I replace device with?
I noticed when browsing the /dev directory that there is no /dev/sda1 listed.
Thanks for the help
/dev/mmcblk0
c
On Tue, Apr 22, 2008 at 1:20 PM, Bill Zimmerly [EMAIL PROTECTED] wrote:
I have a ext2 formated 2 GB SD card and want to mount it on the
DaVinci DM355 board.
Using the general form:
# cd /
# mkdir 2gbsd
# mount device /2gbsd
What device do I replace device
Thanks Chris! :)
- Bill
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on my system, mmc - is the SDcard. So you
would need to:
# mount -o ext2 /dev/mmcblk0p1 /2gbsd
Bill Zimmerly wrote:
I have a ext2 formated 2 GB SD card and want to mount it on the
DaVinci DM355 board.
Using the general form:
# cd /
# mkdir 2gbsd
# mount device /2gbsd
What device do I replace
254 08011776 mmcblk0
254 18007680 mmcblk0p1
mtd devices are the NAND flash on my system, mmc - is the SDcard. So you
would need to:
# mount -o ext2 /dev/mmcblk0p1 /2gbsd
Bill Zimmerly wrote:
I have a ext2 formated 2 GB SD card and want to mount it on the
DaVinci DM355
Hello,
Could any one send me a SD driver for MVL linux 2.6.10, davinci
dm6441/dm6446 platform ？
I have tried serval patchs for it, but all did not work correctly.By
debuging the code , I found that the SEND_SCR COMMAND returns all zeroes value.
One week past, I
Hello,
I've been working with the sd/mmc interface lately and have found that
occasionally if I have an sd card in during the boot process I get the
following error:
mmc0: error 4 whilst initialising SD card
It seems to then wait a little while and then try again - and the second
time it seems
,
Thom
--
*From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] *On Behalf Of *Olivier Singla
*Sent:* Saturday, September 01, 2007 7:54 AM
*To:* davinci-linux-open-source@linux.davincidsp.com
*Subject:* SD card access very slow (77 KB/sec)
Hi
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