| Date | Sat, 19 Jan 2013 01:01:07 +0900 | From | Paul Mundt <> | Subject | Re: [PATCH v2 28/76] ARC: I/O and DMA Mappings |
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On Fri, Jan 18, 2013 at 03:55:43PM +0000, Arnd Bergmann wrote: > On Friday 18 January 2013, Vineet Gupta wrote: > > TBD: Do we need early ioremap support like openrisc > > > > Signed-off-by: Vineet Gupta <vgupta@synopsys.com> > > Can you explain why early ioremap is necessary for you? > > I wasn't aware that openrisc has it. In a lot of cases, > you can use fixmap as a replacement. > The two don't need to be mutually exclusive, either. sh implements early ioremap transparently via fixmaps for example:
arch/sh/mm/ioremap.c arch/sh/mm/ioremap_fixed.c
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