Quoting Vabhav Sharma (2018-10-14 19:58:15) > > > + > > > + pmu { > > > + compatible = "arm,cortex-a72-pmu"; > > > + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW>; > > > + }; > > > + > > > + psci { > > > + compatible = "arm,psci-0.2"; > > > + method = "smc"; > > > + }; > > > + > > > + memory@80000000 { > > > + // DRAM space - 1, size : 2 GB DRAM > > > + device_type = "memory"; > > > + reg = <0x00000000 0x80000000 0 0x80000000>; > > > + }; > > > + > > > + ddr1: memory-controller@1080000 { > > > + compatible = "fsl,qoriq-memory-controller"; > > > + reg = <0x0 0x1080000 0x0 0x1000>; > > > + interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>; > > > + little-endian; > > > + }; > > > + > > > + ddr2: memory-controller@1090000 { > > > + compatible = "fsl,qoriq-memory-controller"; > > > + reg = <0x0 0x1090000 0x0 0x1000>; > > > + interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>; > > > + little-endian; > > > + }; > > > + > > > + sysclk: sysclk { > > > > Name the node a bit generic like clock-xxx. > There is only one clock-unit, Bootloader(U-boot) require sysclk node during device tree fix-up as different platform support varied platform frequency as per reset configuration word used. > Referred other ARM based platform with one clock using name as x: x Please add a comment above this node with this information. Newcomers reading this DTS file won't have any idea why this node is specially named and a comment will help tremendously here.