Re: DT GPMC SRAM and NOR flash support ?

[Mark Jackson <mpfj-list@mimc.co.uk>]

On 01/02/13 19:39, Mark Jackson wrote:
> On 01/02/13 17:12, Jon Hunter wrote:
>> Hi Mark,
>>
>> On 02/01/2013 10:56 AM, Mark Jackson wrote:
>>> There's plenty of DT support going in for NAND flash, but is there any work going on to support NOR
>>> flash ?
>>
>> What board and device are you working that is using NOR? I have a
>> OMAP2420 H4 with NOR that I have been doing a bit of maintenance for but
>> I don't spend much time on it. Eventually it will have to be done but it
>> is always good to know if there is a pressing need.
> 
> We have a custom AM335x CPU board (arriving on my desk within the next few weeks) that has both NAND
> and NOR Flash.
> 
>>> And how about SRAM chips or other memory mapped devices ?
>>
>> Not sure about SRAM (trying to think if I have a board with SRAM even),
>> but definitely, boards using the GPMC to interface to ethernet chips
>> need to be added.
> 
> The board also contains an FRAM chip (which is just treated as SRAM).
> 
> If you'd anything in the pipeline, I'm glad to help in any testing. I've created a custom cape board
> for the BeagleBone which contains the NOR flash and FRAM chips, so I'm not waiting for the new
> hardware to arrive.

I've experimented with trying to add a mtd-physmap device, but no joy.

I'm guessing that the current mtd-physmap code is (in some way) currently incompatible with the GPMC
device ?

Mark J.