Re: 85xx software reset problems from paulus.git

Hi, Robert, Hi, Kumar!

robert lazarski schrieb:

Hi Kumar, I finally got time to get back to this:

On Nov 17, 2007 2:52 PM, Kumar Gala [off-list ref] wrote:

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On Nov 16, 2007, at 4:01 PM, robert lazarski wrote:

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Sorry for replying to myself, but thought I'd mention SRESET works
fine on 85xx 2.6.23 , ie, the board resets after kernel panic. It
doesn't work for me on 2.6.24rc2 .

What actual 85xx are you using?

- k

Custom 8548 board. I'm using the cds 85xx code for a reference and I
calling the same reset functions.

1. do you have the following in your dts:

                 global-utilities@e0000 {        //global utilities reg
                         compatible = "fsl,mpc8548-guts";
                         reg = <e0000 1000>;
                         fsl,has-rstcr;
                 };

Yes.

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2. in your platform code are you using fsl_rstcr_restart in
define_machine()

- k

Yes. The symptoms in 2.6.24RC2 are that during a kernel panic or when
calling 'reboot' in the shell, it just hangs. Using the same dts and
resets in 2.6.23.1 reboots fine. I don't have a cds reference, but
someone who does should be able to confirm whether the issue exists or
not by just attempting to reboot via bash.

ACK. Exactly the same over here (mpc8540ads compatible).
I added the global-utilities today as well, but reboot fails.

Why is the guts stuff missing i.e. in most of the shipped
mpc85xx*.dts? Does it depend on some hardware connections
external to the CPU?

Regards,
-- 
Clemens Koller
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