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</o:shapelayout></xml><![endif]--></head><body lang=KO link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I’ve found how to do it.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>For you should add CONFIG_ARCH_VEXPRESS and ran ‘make V=1 ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- dtbs |& tee logx’<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Dtbs for ARCH_VEXPRESS are generated in the dts directory. Then you can see the command to make the dtb (in the logx file). <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Below is the command. Lots of options for the dtc.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>mkdir -p arch/arm64/boot/dts/arm/ ; gcc -E -Wp,-MD,arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.d.pre.tmp -nostdinc -I./scripts/dtc/include-prefixes -undef -D__DTS__ -x assembler-with-cpp -o arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.dts.tmp arch/arm64/boot/dts/arm/fvp-base-revc.dts ; ./scripts/dtc/dtc -O dtb -o arch/arm64/boot/dts/arm/fvp-base-revc.dtb -b 0 -iarch/arm64/boot/dts/arm/ -i./scripts/dtc/include-prefixes -Wno-unit_address_vs_reg -Wno-unit_address_format -Wno-avoid_unnecessary_addr_size -Wno-alias_paths -Wno-graph_child_address -Wno-simple_bus_reg -Wno-unique_unit_address -Wno-pci_device_reg -d arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.d.dtc.tmp arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.dts.tmp ; cat arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.d.pre.tmp arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.d.dtc.tmp > arch/arm64/boot/dts/arm/.fvp-base-revc.dtb.d<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Chan Kim<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal align=left style='text-align:left;text-autospace:ideograph-numeric ideograph-other;word-break:keep-all'><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Chan Kim <ckim@etri.re.kr> <br><b>Sent:</b> Wednesday, October 27, 2021 6:45 PM<br><b>To:</b> kernelnewbies@kernelnewbies.org<br><b>Subject:</b> DTC compile error (simple-bus unit address format error for #address-cells = <2> case)<o:p></o:p></span></p></div></div><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Hello all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Below is a part of arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi in linux kernel. This file is included by arch/arm64/boot/dts/arm/fvp-base-revc.dts. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>/ {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> smb@8000000 {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> motherboard {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> arm,v2m-memory-map = "rs1";<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> compatible = "arm,vexpress,v2m-p1", "simple-bus";<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #address-cells = <2>; /* SMB chipselect number and offset */<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #size-cells = <1>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #interrupt-cells = <1>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> ranges;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> flash@0,00000000 {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> compatible = "arm,vexpress-flash", "cfi-flash";<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> reg = <0 0x00000000 0x04000000>,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <4 0x00000000 0x04000000>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> bank-width = <4>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> };<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> ethernet@2,02000000 {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> compatible = "smsc,lan91c111";<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> reg = <2 0x02000000 0x10000>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> interrupts = <15>;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> };<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>When I compile the fvp-base-revc.dts file <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(following this method to handle pre-processing : <a href="https://stackoverflow.com/questions/50658326/device-tree-compiler-not-recognizes-c-syntax-for-include-files">https://stackoverflow.com/questions/50658326/device-tree-compiler-not-recognizes-c-syntax-for-include-files</a>), it gives me error below.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi:20.21-25.6: Warning (simple_bus_reg): /smb@8000000/motherboard/flash@0,00000000: simple-bus unit address format error, expected "0"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi:27.24-31.6: Warning (simple_bus_reg): /smb@8000000/motherboard/ethernet@2,02000000: simple-bus unit address format error, expected "202000000"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The dtc is complaining about the address format `flash@0,00000000` or `ethernet@2,02000000`. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>But because the #address-cells = <2>, the node address should be given by chip select number and the offset (inside the chip select). <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>How can I prevent this error? DTC version is 1.5.0.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Any help will be appreciated.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Chan Kim<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></div></body></html>