OK, I'm sorry. I'd made a mistake. Your suggestion solved the problem. Now
I have a gap in System RAM.
This is the device tree source that i have used and is OK:
/dts-v1/;
/plugin/;
/* Reserve 256kB DDR memory for the ping/pong buffers */
/ {
fragment@0 {
target-path = "/";
__overlay__ {
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
pruadc_reserved: pruadc_reserved@0x90010000 {
reg = <0x90010000 0x00040000>;
no-map;
status = "okay";
};
};
};
};
};
Thank you very much.
On Friday, December 7, 2018 at 8:53:22 PM UTC+3:30, RobertCNelson wrote:
>
> On Fri, Dec 7, 2018 at 10:49 AM <[email protected] <javascript:>>
> wrote:
> >
> > Hello.
> > I compiled the following code as the device tree source.
> >
> > /dts-v1/;
> > /plugin/;
> > /* Reserve 256kB DDR memory for the ping/pong buffers */
> > / {
> > fragment@0 {
> > target = <&ocp>;
> swap ocp for this:
>
> target-path = "/";
>
> > __overlay__ {
> > reserved-memory {
> > #address-cells = <1>;
> > #size-cells = <1>;
> > ranges;
> >
> > pruadc_reserved: pruadc_reserved@0x90000000 {
> > reg = <0x90000000 0x00040000>;
> > no-map;
> > status = "okay";
> > };
> > };
> > };
> > };
> > };
> >
> >
> > But after booting, there is no trace of the reserved memory in the
> /proc/iomem file (there is no gap in "System RAM"). I also tested a large
> number of different sources, but none of them came up with a result.
> > Can you share here the device tree source that you have used?
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
--
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