Subject: Re: [PATCH 2/4] ARM: dts: am437x: Move l4 child devices to probe them with ti-sysc

From: Tony Lindgren <[email-masked]>
Date: Tue, 4 Dec 2018 10:11:21 -0800

* Peter Ujfalusi <[email-masked]> [181204 12:22]:
> Hi Tony,
> 
> On 25/09/2018 3.05, Tony Lindgren wrote:
> > With l4 interconnect hierarchy and ti-sysc interconnect target module
> > data in place, we can simply move all the related child devices to
> > their proper location and enable probing using ti-sysc.
> > 
> > In general the first child device address range starts at range 0
> > from the ti-sysc interconnect target so the move involves adjusting
> > the child device reg properties for that.
> > 
> > In case of any regressions, problem devices can be reverted to probe
> > with legacy platform data as needed by moving them back and removing
> > the related interconnect target module node.
> > 
> > Note that we are not yet moving dss or wkup_m3, those will be moved
> > later after some related driver changes.
> 
> Exactly the same issue as with am335x after:
> ARM: dts: am335x: Move l4 child devices to probe them with ti-sysc
> 
> reverting this patch makes audio working:
> 
> Without revert the McASP FIFO would constantly underflow.
> 
> Memcpy test via dmatest works with EDMA

OK I should be able to debug it here with am437x-sk-evm then.

If it's not immediately obvious what's going on, let's just
do a revert here too and debug it more separately.

Regards,

Tony

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