linux-kernel - Re: [PATCH v2] of/address: Add of_iomap

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Message-ID: <20110804131015.GA6596@huya.qualcomm.com>
Date:	Thu, 4 Aug 2011 06:10:15 -0700
From:	David Brown <davidb@...eaurora.org>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	David Brown <davidb@...eaurora.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	devicetree-discuss@...ts.ozlabs.org, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: Re: [PATCH v2] of/address: Add of_iomap_nocache

On Thu, Aug 04, 2011 at 07:44:07AM -0500, Kumar Gala wrote:
> 
> On Aug 4, 2011, at 5:36 AM, David Brown wrote:
> 
> > Add uncached mappings from devicetree nodes similar to regular io
> > mappings.
> > 
> > SPARC is coherent, so there this call is the same as regular of_iomap.
> > 
> > +extern void __iomem *of_iomap_nocache(struct device_node *device, int index);
> 
> What about adding an of_iomap_prot() to match ioremap_prot().

It can be done, but I actually have a use for nocache.  We can
probably add the prot version when first needed.

David

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