[PATCH v3 32/71] ARC: [DeviceTree] Basic support

[James Hogan]

Hi Vineet,

>> arm64 also adds dtbs and $(dtb-y) to targets (at least in linux-next). I
>> think this makes sure that they don't get rebuilt unless they've
>> actually changed. I've also copied this for metag.
> 
> Did you verify that it makes a difference - at least at my end it's not - the
> default dtb is getting rebuilt everytime. I need to debug this some more.

Yeh, for me it prevents the following build lines appearing every time:
DTC     arch/metag/boot/dts/tz1090_01sp.dtb

but it still does these every time:
DTB    arch/metag/boot/dts/tz1090_01sp.dtb.S
AS      arch/metag/boot/dts/tz1090_01sp.dtb.o

Adding dtbs o targets actually didn't seem to be necessary with $(dtb-y)
added.

Cheers
James