Re: 3.11-rc1: OMAP3630 boot crash

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On Mon, Jul 29, 2013 at 08:11:39AM +0000, Paul Walmsley wrote:
> On Thu, 25 Jul 2013, Aaro Koskinen wrote:
> 
> > On Tue, Jul 16, 2013 at 07:58:34PM +0300, Aaro Koskinen wrote:
> > > I get the following boot crash on N950/RM-680 (3630) with unpatched
> > > 3.11-rc1. The crash looks specific to 3630 (it happens during
> > > omap3630_init_late), also the same kernel binary works with N900/RX-51
> > > (3430). You can find the .config after the crash.
> > 
> > I put a debug print to _omap_hwmod_mux_handle_irq
> > (omap_hwmod_mux_scan_wakeups), and it seems when the crash happens the
> > pad name is always "uart3_rx_irrx.uart3_rx_irrx". I made another hack
> > and just "continue" if the pad name is this, and the crash is gone.
> > 
> > Any ideas?
> 
> Nothing comes to mind, but it's worth mentioning that this doesn't happen
> on the 37xx EVM here.  So it's probably RM-680-specific. 

Probably timing specific... I enabled CONFIG_DEBUG_FS and the crash
went away.

A.
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