issue with compiling device tree overlay

Question

Hello i am currently working with the beaglebone black and i am trying to compile a device tree overlay which is used to allocate memory, however i am getting several warnings from the device tree compiler that preventing the compiler from producing a working dtbo file. My kernel version is 4.19.94-ti-r42 and i am running the Debian 10 buster distro. The dts file is shown below:

/dts-v1/;
/plugin/;

/* Reserve 256kB DDR memory for the ping/pong buffers */
/{
    __overlay__ {
        reserved-memory {
                #address-cells = <1>;
                #size-cells = <1>;
                ranges;

                pruadc_reserved: pruadc_reserved@0x9ffc0000 {
                        reg = <0x9ffc0000 0x00040000>;
                        no-map;
                        status = "okay";
                };
            };
        };

};

I then compile the dts file with command below:

dtc -W no-unit_address_vs_reg -O dtb -o shared_ddr.dtbo -b 0 -@ shared_ddr.dts

After compiling a dtbo file is produced but several warnings are shown, the dtbo file is not functional. The warnings are shown below:

shared_ddr.dtbo: Warning (ranges_format): /__overlay__/reserved-memory:ranges: empty "ranges" property but its #address-cells (1) differs from /__overlay__ (2)
shared_ddr.dtbo: Warning (avoid_default_addr_size): /__overlay__/reserved-memory: Relying on default #address-cells value
shared_ddr.dtbo: Warning (avoid_default_addr_size): /__overlay__/reserved-memory: Relying on default #size-cells value
shared_ddr.dtbo: Warning (avoid_unnecessary_addr_size): Failed prerequisite 'avoid_default_addr_size'
shared_ddr.dtbo: Warning (unique_unit_address): Failed prerequisite 'avoid_default_addr_size'

Any help with fixing these warnings will be greatly appreciated, thank you. If any other info is needed let me know.