I did what you said, but no result. Does memory reserving need any kernel driver or configurations?
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/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/1ab6ac42-67bc-40de-8274-b334d354c8d9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
