[PATCH] mtd/ifc: Add support for IFC controller version 2.0

Li Yang leoli at freescale.com
Sat Feb 6 05:05:05 AEDT 2016


On Thu, Feb 4, 2016 at 7:17 PM, Scott Wood <oss at buserror.net> wrote:
> On Thu, 2016-02-04 at 17:07 -0600, Li Yang wrote:
>> On Wed, Feb 3, 2016 at 12:36 AM, Raghav Dogra <raghav at freescale.com> wrote:
>> > The new IFC controller version 2.0 has a different memory map page.
>> > Upto IFC 1.4 PAGE size is 4 KB and from IFC2.0 PAGE size is 64KB.
>> > This patch segregates the IFC global and runtime registers to appropriate
>> > PAGE sizes.
>>
>> If the global registers and the runtime registers are so independent
>> that they have to be on different page boundaries, it would make more
>> sense for them to be defined as separate reg regions in the device
>> tree at the very beginning.  Then we would only need to change the
>> device tree now and it would be future proof for any page size.
>
> That's great if you have a time machine.  Otherwise, NACK.

I didn't suggest that we need to change it now.  But we might need to
be more careful in the future when creating bindings for new hardware.

Regards,
Leo


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