Re: [PATCH] scripts/dtc: dt_to_config - report kernel config options for a devicetree

From: Gaurav Minocha
Date: Thu May 05 2016 - 12:25:28 EST

On Sat, Apr 30, 2016 at 1:38 PM, Rob Herring <robh+dt@xxxxxxxxxx> wrote:
> On Fri, Apr 29, 2016 at 1:39 AM, Gaurav Minocha
> <gaurav.minocha.os@xxxxxxxxx> wrote:
>> On Thu, Apr 28, 2016 at 3:32 PM, Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>>> On Thu, Apr 28, 2016 at 4:46 PM, Frank Rowand <frowand.list@xxxxxxxxx> wrote:
>>>> From: Frank Rowand <frank.rowand@xxxxxxxxxxx>
>>>> Determining which kernel config options need to be enabled for a
>>>> given devicetree can be a painful process. Create a new tool to
>>>> find the drivers that may match a devicetree node compatible,
>>>> find the kernel config options that enable the driver, and
>>>> optionally report whether the kernel config option is enabled.
>>> I would find this more useful to output a config fragment with all the
>>> options enabled. The hard part there is enabling the options a given
>>> option is dependent on which I don't think kbuild takes care of.
>> Do you mean to generate something like .config? If yes, then IMO it would
>> not be a correct configuration file.
> No, only a config fragment which is just some subset of config
> options. Then you could have a generic defconfig plus the fragment for
> a platform to get a working setup.

Okay, that seems like a useful option, that should be part of the tool itself.
Will discuss with Frank once he is back. Thanks!

> Rob