dtc warnings

Rob Herring robh at kernel.org
Fri Apr 1 06:25:10 PDT 2016

On Fri, Apr 1, 2016 at 2:49 AM, Tomi Valkeinen <tomi.valkeinen at gmail.com> wrote:
> Hi Rob,
> On 01/04/16 04:40, Rob Herring wrote:
>> You may have noticed that linux-next had gotten noisy with dtc
>> warnings lately. I dropped the change for a bit, but added it back
>> today except now it is disabled unless building with "W=1".
>> There's ~25K (2500 unique) warnings generated from the ARM dts files.
>> Here's the ranking of warnings by dtb. OMAP is the clear winner (based
>> on the similar counts, probably lots of duplicates). Please help
>> remind contributors to test with W=1 and start to fix these.
>> At least for memory nodes, I plan to whitelist allowing no
>> unit-address. There could be others, but none that I've seen so far.
> What's the correct way to fix nodes for display platform devices? For
> example, omap4-panda-common.dtsi has two connector nodes:
> dvi0: connector at 0 {
>         compatible = "dvi-connector";
>         label = "dvi";
>         ...
> };
> hdmi0: connector at 1 {
>         compatible = "hdmi-connector";
>         label = "hdmi";
>         ...
> };
> Should I add the reg property, or should I rename the nodes to, say,
> connector_dvi and connector_hdmi, or connector1 and connector2?

I think adding reg only makes sense if it maps to something addressable by s/w.

So in this case: dvi-connector and hdmi-connector

If we have 2 of the same type, we'll probably have to append a number.


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