Kernel 3.4 on Dreamplug: no serial console

Florian Fainelli florian at
Mon Jun 4 04:29:57 EDT 2012


On Sunday 03 June 2012 14:40:49 Jason Cooper wrote:
> On Sun, Jun 03, 2012 at 05:12:18PM +0000, Arnd Bergmann wrote:
> > I'd also accept a patch to make ARCH_KIRKWOOD_DT select OF_SERIAL if 
> > prefer that, but I think just changing the defconfig is better.
> I'd prefer the defconfig as there are situations where users/oems deploy
> a kernel without support for serial console.  In order to do that with
> your patch, or similar approaches, they would have to change the code.
> With defconfig, they don't.

Should not you rather select OF_SERIAL and add a status propery to the uart 
node in device tree, so that it is up to dtb provider to determine whether 
this device node should be enabled or not? You would avoid all kind of 
defconfig issue.

> FYI: there is a running problem with kirkwood_defconfig that I haven't
> had time to look into.  I've been doing 'make oldconfig' and thus never
> encountered the problem.
> The problem involves CONFIG_ARM_PATCH_PHYS_VIRT and causes the system
> not to boot.  I'm not sure if this is dreamplug specific, kirkwood, or
> all orion.  I've only heard reports regarding dreamplug, but that
> doesn't mean it's limited to that board.
> I'd like to have the defconfig working by the time the DT conversion is
> complete, but I'm currently giving DT conversion higher priority.  So,
> if anyone wants to take a crack at solving it, please do.  Otherwise, I
> plan on taking a look at it after the driver bindings are done.
> thx,
> Jason.
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