On Thu, Apr 13, 2017 at 1:03 PM, Robert King <[email protected]>
wrote:
> 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.
>
cpu0-supply = <&dcdc2_reg>;
aka, cpu0 is supplied by dcdc2 regulator:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/tps65217.dtsi#n38
reg = <0x80000000 0x10000000>;
Memory starts at 0x80000000 is 0x10000000 long:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt?id=refs/tags/v4.11-rc6
0x54 gpio address (look at datasheet)
0x188 gpio address (look at datasheet)
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
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