device tree, unit adress

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Robert King

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Apr 13, 2017, 2:03:53 PM4/13/17
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Hi everyone,

i am having trouble at understanding device tree. i highlighted the some parts on the image (book of Derek Molloy). Does anyone know, where we can these values?

All these syntax is also a bit different, sometimes <...>, another time / ... /, then { ....}. Where all these comes from?
thanks a lot for your helps.

best regards

Screenshot from 2017-04-13 19-58-11.png

Robert Nelson

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Apr 13, 2017, 2:14:31 PM4/13/17
to Beagle Board, robert....@gmail.com
cpu0-supply = <&dcdc2_reg>;

aka, cpu0 is supplied by dcdc2 regulator:


reg = <0x80000000 0x10000000>; 

Memory starts at 0x80000000 is 0x10000000 long:


0x54 gpio address (look at datasheet)
0x188 gpio address (look at datasheet)

Regards,

--
Robert Nelson
https://rcn-ee.com/
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