Dynamic Loading and unnloading of Device tree(dtb)

[Frank Rowand]

On 07/25/16 04:17, Raul Piper wrote:
> Hi,
> Where can I find the example for the  dynamic Loading of the device
> tree and its corresponding device driver.
> How can I build the dts with or without the kernel source.
> 
> I am getting this error whenever I am trying to build the below sample
> dts file using the dtc compiler.
> 
> dtc -O dtb -o leds-ns2.dtb leds-ns2.dts
> 
> 
> Error: leds-ns2.dts:1.1-2 syntax error

That is an error at line 1, columns 1-2. dtc does not understand cpp
directives, you need to process leds-ns2.dts with cpp. The Linux
build infrastructure does this for .dtb targets in makefiles.

> FATAL ERROR: Unable to parse input tree
> 
> Below is the content  of the leds-ns2.dts
> 
> #include <dt-bindings/leds/leds-ns2.h>
> 
>  ns2-leds {
>           compatible = "lacie,ns2-leds";
> 
>           blue-sata {
>                   label = "ns2:blue:sata";
>                   slow-gpio = <&gpio0 29 0>;
>                   cmd-gpio = <&gpio0 30 0>;
>                   modes-map = <NS_V2_LED_OFF  0 1
>                                NS_V2_LED_ON   1 0
>                                NS_V2_LED_ON   0 0
>                                NS_V2_LED_SATA 1 1>;
>           };
>   };
> 
> Thanks,
> R
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