On Fri, Mar 8, 2013 at 10:25 PM, Javier Martinez Canillas
<javier@xxxxxxxxxxxx> wrote:
> On Fri, Mar 8, 2013 at 10:41 PM, Jon Hunter <jon-hunter@xxxxxx> wrote:
>>
>> Yes you are correct. In general, I have been trying to stay some-what
>> consistent with what hwmod was doing as this was being auto-generated by
>> some hardware design specs and I believe they wanted to eventually get
>> to the point where DT files would be auto-generated too for OMAP.
>> Furthermore my understanding is that the smallest page that can be
>> mapped by the kernel for ARM is 4kB. So if you declare it as 0x2d0 or
>> 0x1000 it will map a 4kB page (I could be wrong here).
>>
>> I don't have any strong feelings here but will do what the consensus
>> prefers.
>>
>
> Yes, you are right here.
>
> I forget that ioremap() does a page-aligned mapping and since the
> minimum page size for ARM is 4KB as you said, there is no difference
> between using 0x2d0 and 0x1000. Sorry for the noise.
>
Certainly, I don't have strong feelings about this.
FWIW, mvebu maintainers imposes a "minimal" address space request
policy.
On the other side, it seems to me we shouldn't look at internal kernel
implementation (i.e. ioremap page-alignment) to make this decision.
Somehow, I feel this is almost a nitpick, so don't take this too seriously.
Regards,
--
Ezequiel
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