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

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Message-Id: <201303261000.33615.arnd@arndb.de>
Date:	Tue, 26 Mar 2013 10:00:33 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Lee Jones <lee.jones@...aro.org>
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 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>;
	}



	Arnd
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