parallels@ubuntu-linux-20-04-desktop:~$ dtc -I dtb -O dts /home/parallels/bcm2710-rpi-3-b-plus.dtb -o OPi.dts
OPi.dts: Warning (unit_address_vs_reg): /soc: node has a reg or ranges property, but no unit name
OPi.dts: Warning (unit_address_vs_reg): /soc/axiperf: node has a reg or ranges property, but no unit name
OPi.dts: Warning (unit_address_vs_reg): /soc/gpiomem: node has a reg or ranges property, but no unit name
OPi.dts: Warning (simple_bus_reg): /soc/i2c0mux: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/gpu: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/axiperf: simple-bus unit address format error, expected "7e009800"
OPi.dts: Warning (simple_bus_reg): /soc/firmware/clocks: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/firmware/expgpio: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/power: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/gpiomem: simple-bus unit address format error, expected "7e200000"
OPi.dts: Warning (simple_bus_reg): /soc/fb: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/vcsm: missing or empty reg/ranges property
OPi.dts: Warning (simple_bus_reg): /soc/sound: missing or empty reg/ranges property
OPi.dts: Warning (unique_unit_address): /soc/mmc@7e300000: duplicate unit-address (also used in node /soc/mmcnr@7e300000)
OPi.dts: Warning (unique_unit_address): /soc/firmwarekms@7e600000: duplicate unit-address (also used in node /soc/smi@7e600000)
OPi.dts: Warning (clocks_property): /__symbols__:clocks: property size (21) is invalid, expected multiple of 4
OPi.dts: Warning (gpios_property): /aliases:gpio: property size (19) is invalid, expected multiple of 4
OPi.dts: Warning (gpios_property): /__symbols__:gpio: property size (19) is invalid, expected multiple of 4