linux-kernel - Re: Subject: L2x0 OF properties do not include interrupt #

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Message-ID: <20110810151256.GN10121@e102144-lin.cambridge.arm.com>
Date:	Wed, 10 Aug 2011 16:12:56 +0100
From:	Will Deacon <will.deacon@....com>
To:	Rob Herring <rob.herring@...xeda.com>
Cc:	Arnd Bergmann <arnd@...db.de>, Mark Rutland <Mark.Rutland@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"weizeng.he@....com" <weizeng.he@....com>,
	"workgroup.linux@....com" <workgroup.linux@....com>,
	"'Barry Song'" <21cnbao@...il.com>,
	"'Grant Likely'" <grant.likely@...retlab.ca>,
	"'Olof Johansson'" <olof@...om.net>
Subject: Re: Subject: L2x0 OF properties do not include interrupt #

On Wed, Aug 10, 2011 at 03:31:54PM +0100, Rob Herring wrote:
> Here's all the interrupts on the PL310:
> 
> DECERRINTR Decode error received on master ports from L3
> SLVERRINTR Slave error received on master ports from L3
> ERRRDINTR Error on L2 data RAM read
> ERRRTINTR Error on L2 tag RAM read
> ERRWDINTR Error on L2 data RAM write
> ERRWTINTR Error on L2 tag RAM write
> PARRDINTR Parity error on L2 data RAM read
> PARRTINTR Parity error on L2 tag RAM read
> ECNTRINTR Event Counter Overflow/Increment
> L2CCINTR L2CC Combined Interrupt Output
> 
> It's likely that you would want to split these to different drivers.
> EDAC for parity/bus errors and hw-events for event counters, for example.

I completely agree with you here. In reality, I expect we'll be lucky if
even the combined interrupt is wired up so maybe the individual property
names should only be added on an as-needed basis? For the time being we can
happily get by with something like combined-interrupt = <...>.

Or would you rather specify everything up front?

Will
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