[PATCH V5 0/4] ARM: Kirkwood: Add support for DNS-320 and DNS-325 using devicetree

[Jamie Lentin]

On Wed, 18 Apr 2012 15:04:40 +0100, Jason Cooper <jason at lakedaemon.net>  
wrote:

> On Wed, Apr 18, 2012 at 03:24:45PM +0200, Andrew Lunn wrote:
>> > > dies at "Gating clock of unused units", presumably as CGC_RUNIT  
>> isn't set.
>> > > Is this something known or is it worth further investigation?
>> >
>> > That could potentially mess up a future bisect.  However, it would  
>> only
>> > crop up for dnskw boards.  I'll let Grant weigh in on this since he's
>> > the one who asked that the nand init be removed.
>>
>> Turning off RUNIT is bad. Both the NAND and SPI controllers use this
>> clock. You can only safely turn it off if none of these are active.

So would u-boot using the NAND count as the controller being active in  
this case?

> If we hear no objections, call kirkwood_nand_init() with no partition
> entries, then put the partition entries in the commandline in the dts.
> This is what Arnaud Patard is doing with the Iomega iConnect:
>
> mtdparts=orion_nand:0xc0000 at 0x0(uboot),0x20000 at 0xa0000(env),0x300000 at 0x100000(zImage),0x300000 at 0x540000(initrd)...
>
> Then, in the last patch remove the mtdparts from the commandline in the
> dts and add the partition entries appropriately.

Certainly can do, although I'm not entirely convinced it addresses Grant's  
comment. Another option would be to change the patch order and add DNS-320  
support after all NAND support patches are merged, although that would go  
against the initial advice of how to layout the patchset. Will do whatever  
is considered best though.

>
> thx,
>
> Jason.


-- 
Jamie Lentin