Hello,
Wolfgang Denk wrote:
Dear =?ISO-8859-1?Q?K=E1ri_Dav=ED=F0sson?=,
In message <4ad70927.3030...@marel.com> you wrote:
The kernel from the BSP on Freescale site is crashing on the CAN in my case
(might be a hardware bug).
I don;t think so. There are some problems in this code, for example
the clocks seem to be wrong. Not toi menthin that the whole code is
hoplessly old and without chance of ever being merged into mainline.
Indeed. I had to disable the follwing clock stuff to prevent crashing. I am
running on Rev 3 chip.
diff --git a/drivers/net/can/mscan/mpc52xx_can.c
b/drivers/net/can/mscan/mpc52xx_can.c
index e1d78b9..55def57 100644
--- a/drivers/net/can/mscan/mpc52xx_can.c
+++ b/drivers/net/can/mscan/mpc52xx_can.c
@@ -104,8 +104,8 @@ static int __devinit mpc52xx_can_probe(struct
platform_device *pdev)
port_clk = clk_get(NULL, clk_name);
/* update clock rate for mpc5121e rev2 chip */
- if (port_clk)
- pdata->clock_frq = clk_get_rate(port_clk);
+// if (port_clk)
+// pdata->clock_frq = clk_get_rate(port_clk);
/* enable clock for mscan module */
clk_enable(mscan_clk);
I could not find the source for the kernel in the BSP or on the freescale site.
Extracting just the sources from LTIB (without actually building all
of it) is indeed not exactly easy.
I had not looked at
http://git.denx.de/?p=linux-2.6-denx.git;a=shortlog;h=refs/heads/ltib-mpc5121ads-20090602
Be careful. There are several branches that are intended for reference
only, or reflect work in progress. These are usually not intended for
use real use in a project:
The "ltib-mpc5121ads-20090602" branch reflects the exact state of the
kernel contained in the LTIB with this name (dated July 2009, despite
the name; based at 2.6.24.6, i. e. 7+ kernel versions behind).
Yes this I found it odd that the mpc5121 work is so far behind.
We have two other mpc5200 based boards that I am running with 2.6.29.
They are running well.
The "mpc512x" branch contains a much smaller subset of drivers, but is
based on a more recent kernel tree (2.6.31-rc5) and is the base of our
(currently dozing) attempts to push this code into mainline.
I am now in the progress of cloning the linux-mpc512x git from denx and
building from it.
Hopefully that will help me.
Do not do this. This old repository was intended for co-operation
with John Rigby, when he was still working for Freescale. It is a
dead end and totally unsupported. Guess I should remove it. Indeed.
Removed now. Sorry for the confusion.
Already done it and I got it to compile but as you hint I am having other
problems.
Serial ports and ethernet works though :)
Best regards,
Wolfgang Denk
rg
kd
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