Embedded Linux Development Using Yocto Project Cookbook - Second Edition

How it works...

The DTS file for the Wandboard variant is under arch/arm/boot/dts/imx6qp-wandboard-revd1.dts and looks as follows:

#include "imx6q-wandboard-revd1.dts"                                             
#include "imx6qp.dtsi"                                                           
                                                                                 
/ {                                                                              
        model = "Wandboard i.MX6QuadPlus rev.D1";                                
}; 

With imx6q-wandboard-revd1.dts being:

#include <dt-bindings/interrupt-controller/irq.h>                                
#include "imx6q.dtsi"                                                            
#include "imx6qdl-wandboard-revd1.dtsi"                                          
                                                                                 
/ {                                                                              
        model = "Wandboard i.MX6Quad rev.D1";                                    
        compatible = "fsl,imx6q-wandboard", "fsl,imx6q";                         
};    

What we see here is a device tree root node that has no parents. The rest of the nodes will have a parent. The structure of a node can be represented as follows:

node@0{ an-empty-property; a-string-property = "a string"; a-string-list-property = "first string", ...