Re: 3.18.1->3.19-rc2: In-band Error seen by MPU

[Sebastian Reichel <sre@kernel.org>]

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Hi,

On Tue, Jan 06, 2015 at 12:25:12PM +0100, Peter Kümmel wrote:
> Am 05.01.2015 um 16:43 schrieb Felipe Balbi:
> >Just booted AM335x with CONFIG_PREEMPT and haven't seen any problem.
> >Perhaps this is something related to another OMAP3-only driver?
> >Perhaps HSI/SSI ?
> 
> I see a ssi error directly before the IN-Band error:
> 
> [    0.339935] platform 48058000.ssi-controller: Cannot lookup hwmod 'ssi'
> [    0.346893] In-band Error seen by MPU  at address 0
> [    0.346923] ------------[ cut here ]------------

mh I guess your board's dts included omap36xx.dtsi or omap34xx.dtsi.
Since ssi controller is not available on DM3xxx/AM3xxx (AFAIK) it
should be disabled for those SoCs:

&ssi {
    status = "disabled";
};

From what I can see the following in-tree .dts files should be
fixed, too:

* am3517_mt_ventoux.dts
  Currently includes "omap34xx.dtsi" instead of "am3517.dtsi".

Apart from that the following boards seem to use omap36xx.dtsi
include, but are actually DM37xx, so they should disable the
ssi block:

* omap3-igep.dtsi
* omap3-lilly-a83x.dtsi
* omap3-overo-storm.dtsi

I will prepare a patch for that later.

-- Sebastian

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