Hi Andreas, > + soc { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0x98000000 0x0 0x98000000 0x68000000>; > + > + rbus: r-bus@98000000 { > + compatible = "simple-bus"; > + reg = <0x98000000 0x100000>; > + #address-cells = <1>; > + #size-cells = <1>; > + ranges = <0x0 0x98000000 0x100000>; The r-bus size of RTD1395 is 0x200000. Regards, James