I am trying to figure out how to reserve memory in device tree. (this is
based on an example by TI: Dts
<https://git.ti.com/apps/tida01555/blobs/master/dts/am335x-boneblack-pruadc.dts>
and
compile instructions section 3.1.2.4
<http://www.ti.com/lit/ug/tidudn4/tidudn4.pdf>)
Here is is my dts file:
/dts-v1/;
/ {
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
pruadc_reserved: pruadc_reserved@0x9ffc0000 {
reg = <0x9ffc0000 0x00010000>;
no-map;
status = "okay";
};
};
};
However, when I compile I get the following warnings:
src/arm/MEM.dtbo: Warning (ranges_format): /reserved-memory has empty
"ranges" property but its #address-cells (1) differs from / (2)
src/arm/MEM.dtbo: Warning (avoid_default_addr_size): Relying on default
#address-cells value for /reserved-memory
src/arm/MEM.dtbo: Warning (avoid_default_addr_size): Relying on default
#size-cells value for /reserved-memory
Other combinations of address-cells/size-cells give reg format warnings.
Any suggestions would be much appreciated.
Thanks
Gaurav
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