linux-kernel - Re: [PATCH 0/3] ARM: OMAP3: Fix McBSP2/3 hwmod setup for sidetone

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Date:	Tue, 22 Mar 2016 10:53:19 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Paul Walmsley <paul@...an.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jarkko Nikula <jarkko.nikula@...mer.com>,
	Tero Kristo <t-kristo@...com>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<alsa-devel@...a-project.org>
Subject: Re: [PATCH 0/3] ARM: OMAP3: Fix McBSP2/3 hwmod setup for sidetone

Tony,

On 03/21/16 22:21, Tony Lindgren wrote:
> Hi,
> 
> * Peter Ujfalusi <peter.ujfalusi@...com> [160321 01:39]:
>>
>> This is also interesting:
>> McBSP2 sidetone is in region 39 and 40 (module and L4 interconnect) which is
>> unique in case of OMAP34xx and OMAP35xx, but it is overlapping with GPIO6 on
>> OMAP36xx. Not sure what are the implications.
> 
> Hmm GPIO6 is in a different L4 segment though? Maybe
> you did not account for the segments?
> 
> 0x49000000 + 0x20000 + 0x2000/0x4000/0x6000 for McBSP
> 0x49000000 + 0x50000 + 0x8000 for GPIO6
> 
> Or maybe I don't understand at which physical address the
> overlap is? :)

The addresses are not overlapping, but the Region Numbers for GPIO6 and McBSP2
sidetone in Table 9-114 "Region Allocation for
L4-Per Interconnect". But only in case of OMAP36xx

-- 
Péter