linux-kernel - Re: [PATCH 2/3] mfd: db8500-prcmu: Fetch the PRCMU TCDM base address from Device Tree

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Message-ID: <20130326101944.GA15177@gmail.com>
Date:	Tue, 26 Mar 2013 10:19:44 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linus.walleij@...ricsson.com
Subject: Re: [PATCH 2/3] mfd: db8500-prcmu: Fetch the PRCMU TCDM base address
 from Device Tree

On Tue, 26 Mar 2013, Arnd Bergmann wrote:

> On Tuesday 26 March 2013, Lee Jones wrote:
> > Bit for information for you. 
> > 
> > I have confirmed that the address locations are the same for
> > all SoCs are the same. However, the size of the TCDM changes from 4k
> > on the db8500 to 12k on the db8540.
> > 
> > Is there a way we can increase the size for the db8540 without
> > creating an entire new DTS file? Seems overkill.
> 
> You can always override a property by setting it again, like
> 
> 	soc {
> 		prcmu: db8500-prcmu@...d0000 {
> 			reg = <0xabcd0000 0x1000>;
> 		};
> 	};
> 
> ...
> 
> 
> 	&prcmu {
> 		reg = <0xabcd0000 0x3000>;
> 	}

Perfect, thanks.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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