State Framework and dtb

Sascha Hauer s.hauer at pengutronix.de
Fri Mar 31 00:23:38 PDT 2017


On Fri, Mar 31, 2017 at 10:18:05AM +0300, Çağlar Kilimci wrote:
> 2017-03-31 10:02 GMT+03:00 Sascha Hauer <s.hauer at pengutronix.de>:
> > On Fri, Mar 31, 2017 at 09:54:56AM +0300, Çağlar Kilimci wrote:
> >> Hello,
> >>
> >> > I should have never implemented this freeing of the stored device tree.
> >> > There are too many pointers in the code to nodes of this tree. Please
> >> > do not use this free/load device tree feature for state.
> >>
> >> Sure, I usually avoid using it. Here I use to test it if it is able to
> >> read the dtb or not? Apparently, it "can" read and parse it but at the
> >> boot stage, it does not care.
> >>
> >> > So you edited
> >> > the devicetree in the barebox source code, built a new binary with it
> >> > and started it. Now when you enter "of_dump /state at 0" you should
> >> > see the state node you created. Is that what happens?
> >>
> >> No, not at all. I could not any sign of state (or state at 0).
> >> barebox at Phytec phyCORE AM335x:/ of_dump /state at 0
> >> Cannot find nodepath /state at 0
> >> of_dump: No such file or directory
> >
> > Ok, here's your problem. I assume you edited
> > arch/arm/dts/am335x-phytec-phycore-som.dts, right? Could you send the
> > diff to that file (or to the one you edited)? There must be something
> > wrong here.
> 
> Actually, I was using arch/arm/boot/dts/am335x-phycore-som.dtsi in the
> linux-ti kernel and the diff is:

Ok, when you're changing the Linux dts then barebox of course doesn't
know about this.

> 
> Let me edit "arch/arm/dts/am335x-phytec-phycore-som.dts" and try it.

Yes, please. That sounds better.

Sascha

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