I think 64MB limitation of ioremap() is due to the kernel's page size.
When compiling kernel, it has an option to choose the memory page size
which is default 64MB. To use memory greater than 64MB, there is two
methods. One is to make the kernel's page size larger as Phil Nitschke
said. Another is
Hi,
I am trying to setup i2c driver for saa7121 on my mpc855 based board
normally the address for saa7121 is 0x88, but when I enable i2c bus
scan, the driver detect it's address is 0x34, so I just stick to 0x34.
Anyway, I can write to saa7121via i2c bus successfully, but I can't enable
color
Why do you need atomic operations in user land? IPC will be sufficient
to deal with race conditions between processes.
Best Regards,
Leo
-Original Message-
From: linuxppc-embedded-bounces+leoli=freescale.com at ozlabs.org
[mailto:linuxppc-embedded-bounces+leoli=freescale.com at
-Original Message-
From: linuxppc-embedded-bounces+leoli=freescale.com at ozlabs.org
[mailto:linuxppc-embedded-bounces+leoli=freescale.com at ozlabs.org] On
Behalf Of
Xu, Li (GE, Research)
Sent: Thursday, August 24, 2006 4:02 PM
To: linuxppc-embedded at ozlabs.org
Subject: I2C
Hello,
I'm new to Linux PowerPC platform, and I'm wondering what ARCH we should
use to build the kernel. There seems to be 'ppc' and 'powerpc'. What's
the difference between the two ?
Thank you !
Benjamin
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On Thu, 2006-08-24 at 05:38 -0700, Parav Pandit wrote:
ppc = 32bit.
powerpc= 64bit.
Correct me if I am wrong.
Yes, you're wrong. Some 32 bit boards are also under arch/powerpc now.
I am not sure why community didn't adopt the name ppc and ppc64 just
like ia-32 and ia64.
They did
,
Parav Pandit
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Le jeudi 24 ao?t 2006 ? 07:49 -0500, Josh Boyer a ?crit :
On Thu, 2006-08-24 at 05:38 -0700, Parav Pandit wrote:
ppc = 32bit.
powerpc= 64bit.
Correct me if I am wrong.
Yes, you're wrong. Some 32 bit boards are also under arch/powerpc now.
I am not sure why community didn't adopt
...
URL:
http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20060824/54a92665/attachment.htm
On Thu, 2006-08-24 at 14:58 +0200, Benjamin Delagoutte wrote:
I'm currently working on a PPC 405 based developement card. Does it mean
I have to work using the arch/ppc tree ?
For now, yes. Set ARCH=ppc when you compile the kernel.
What about the includes ? Do I have to use only
On Thu, Aug 24, 2006 at 02:58:15PM +0200, Benjamin Delagoutte wrote:
Le jeudi 24 ao?t 2006 ? 07:49 -0500, Josh Boyer a ?crit :
On Thu, 2006-08-24 at 05:38 -0700, Parav Pandit wrote:
ppc = 32bit.
powerpc= 64bit.
Correct me if I am wrong.
Yes, you're wrong. Some 32 bit boards are
On Thu, Aug 24, 2006 at 08:07:20AM -0500, Josh Boyer wrote:
On Thu, 2006-08-24 at 14:58 +0200, Benjamin Delagoutte wrote:
What about the includes ? Do I have to use only include/asm-ppc or are
include/asm-powerpc necessary as well ?
I believe there are some hacks in the makefiles to pull
On Thu, Aug 24, 2006 at 10:54:23AM +0800, alva wrote:
I think 64MB limitation of ioremap() is due to the kernel's page size.
When compiling kernel, it has an option to choose the memory page size
which is default 64MB. To use memory greater than 64MB, there is two
methods. One is to make the
On Wed, Aug 23, 2006 at 07:30:37PM +0930, Phil Nitschke wrote:
On Tue, 2006-08-22 at 09:22 -0500, Matt Porter wrote:
On Tue, Aug 22, 2006 at 05:11:09PM +0930, Phil Nitschke wrote:
Hi all,
I have 2 GB memory on a 7448 processor, and want to reserve a huge chunk
of it at boot-time,
I noticed that MontaVista now has their Pro 4.0 version (2.6 Kernel)
available for the Xilinx ML40x series of boards. I would assume that
means driver support for at least most of the hardware on the boards.
Is this code that should be freely available? How would one get a copy
of these
-embedded at ozlabs.org
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Thanks Kumar,
As always, you're several steps ahead of me.
On Wed, 2006-08-23 at 18:04 -0500, Kumar Gala wrote:
I know I posted a patch for cf-ide.c to lkml some time ago, this was
to do a CF in true ide mode using the 83xx localbus.
Frank,
due to my understanding of the GPL (and i have already invested some time
in understanding the various flavours of open source licences), you should
contact Montavista, and ask them for the sources.
This board adaption is derivative work of the GPL Kernel, so the result of
this work also
I too had high hopes when I heard an LSP for the ML40x was imminent, I
nabbed it and was disappointed to find that their drivers still only
support relatively old versions of the Xilinx IP. It would seem that
they are still creating the design they ported to with EDK/ISE v7.2
rather than the
Linuxppc-embedded at ozlabs.org
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Note that Xilinx plans to update the MV drivers to support the latest IP
in EDK 8.2.2 (due out around October), and these drivers would be part
of the BSP generation process of Platform Studio. Sorry, the timing of
the MV ML40x work and our EDK 8.1.x release was such that MV had no
choice but to
/linuxppc-embedded
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Hello,
A 'newbie-to-platform-devices' question:
In a patch that Kumar just sent for a compact flash device, the resource
data (I/O addresses, IRQ # etc.) are retrieved from the platform system.
I guess I can either modify the device tree in U-boot by adding
additional nodes, or instantiate a
/linuxppc-embedded
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On Thu, 24 Aug 2006 13:53:17 -0400
Ben Warren bwarren at qstreams.com wrote:
Hello,
A 'newbie-to-platform-devices' question:
In a patch that Kumar just sent for a compact flash device, the resource
data (I/O addresses, IRQ # etc.) are retrieved from the platform system.
I guess I can
On Aug 24, 2006, at 9:44 AM, Ben Warren wrote:
Thanks Kumar,
As always, you're several steps ahead of me.
On Wed, 2006-08-23 at 18:04 -0500, Kumar Gala wrote:
I know I posted a patch for cf-ide.c to lkml some time ago, this was
to do a CF in true ide mode using the 83xx localbus.
Kumar,
On Thu, 2006-08-24 at 13:25 -0500, Kumar Gala wrote:
The only code in u-boot was the UPM setup code, I'm happy to send
that to you.
If it's no trouble, that would be great. My HW guy is calculating the
settings, but this stuff can be frustrating to debug. BTW - was the
system bus
Thanks Vitaly,
On Thu, 2006-08-24 at 22:06 +0400, Vitaly Bordug wrote:
I'd suggest to make a look at LDD concerning linux device model...
Thanks. I'll read it again. My little brain absorbs this stuff very
slowly.
For platform device, there's no need to cope with u-boot at all. You'll
The ml403 reference design has several evaluation cores: opb_uart16550,
opb_iic and opb_ethernet. They seem to time-out after about eight hours.
Frank
Wade Maxfield wrote:
Good question. How long before lockup? The only core that should be
licensed is the ethernet, and I know it was
[top-posting fixed :-) ]
On Thu, 24 Aug 2006, Wade Maxfield wrote:
On 8/24/06, Peter Ryser peter.ryser at xilinx.com wrote:
Wade,
are you sure that you did not build your hardware with evaluation cores of
the licenses? If you are using the evaluation licenses the hardware (FPGA
Hi,
I've create an i2c client and my questions is how to access it from userspace.
This client is sitttng on adapter that I was able to access via /dev
interface. After the client were successfuly loaded and detected,
ioctl(fd,I2C_SLAVE,...) and read/write functions didn't work and error
/linuxppc-embedded/attachments/20060824/98b158bc/attachment.htm
On my previous project, a 2.4 kernel on PPC, I frequently used
ip=w.x.y.z on the kernel command line to specify a static IP address for
my target board (when booting with a flash- or RAM-based root filesystem).
Similarly, when using an NFS-mounted root fs, I would use
ip=w.x.y.z:a.b.c.d,
Hi,
I've create an i2c client and my questions is how to access it from userspace.
This client is sitttng on adapter that I was able to access via /dev
interface. After the client were successfuly loaded and detected,
ioctl(fd,I2C_SLAVE,...) and read/write functions didn't work and error
Hi,
I'm developing a PPC440GX based board that uses U-Boot to boot a
multi-file boot image composed of the kernel and a very large ( 96MB
uncompressed) initrd file. The board has 512MB of RAM of which the
upper 16MB is reserved for dedicated hardware. The 16MB block is
reserved via mem=496M and
--- Ladislav Klenovi? lk99336 at pobox.sk wrote:
Hi,
I've create an i2c client and my questions is how to access it
from userspace. This client is sitttng on adapter that I was
able to access via /dev interface. After the client were
successfuly loaded and detected,
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