[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 2:25 PM, Grant Likely <grant.likely at secretlab.ca> wrote:
> 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.

Oops, ignore the XSLT bit. XSLT isn't schema and has no bearing on the
discussion of schema. Sorry for the noise.

g.