[Ksummit-2013-discuss] DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?]

[Grant Likely]

On Sat, Jul 27, 2013 at 2:01 PM, jonsmirl at gmail.com <jonsmirl at gmail.com> wrote:
> On Sat, Jul 27, 2013 at 3:45 PM, Grant Likely <grant.likely at secretlab.ca> wrote:
>> On Sat, Jul 27, 2013 at 4:59 AM, Arend van Spriel <arend at broadcom.com> wrote:
>>> Let's see how many people go and scream if I say this: Too bad .dts files
>>> are not done using XML format as DT bindings could be described using XML
>>> Schema.
>>
>> Draft an example and show us how it would look!  :-)  There is
>> absolutely nothing preventing us from expressing a DT in XML format,
>> or even using XSLT to define DT schema while still using our current
>> .dts syntax. It would be trivial to do lossless translation between
>> .dts syntax and xml.
>>
>> The problem that I have with XML and XSLT is that it is very verbose
>> and not entirely friendly to mere-mortals. However, I'm more than
>> willing to be proved wrong on this point.
>
> I considered this approach a while ago and discarded it. It would work
> but it is just too much of a Frankenstein monster.
>
> Much cleaner to modify dtc to take a schema as part of the compilation
> process. The schema language itself has no requirement to look like
> DTS syntax. Whoever wrote dtc probably has a favorite language that
> would be good for writing schemas in.

Making it part of dtc is a required feature as far as I'm concerned.
Using XML/XSLT and dtc-integration are not mutually exclusive, but I
digress.

g.