Re: [PATCH V3 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools

Viresh Kumar
2021-01-12T05:09:07Z

On 11-01-21, 18:44, Frank Rowand wrote:
> On 1/7/21 12:25 AM, Viresh Kumar wrote:
> > We will start building overlays for platforms soon in the kernel and
> > would need these tools going forward. Lets start building them.
> >
> > The fdtoverlay program applies (or merges) one ore more overlay dtb
> > blobs to a base dtb blob. The kernel build system would later use
> > fdtoverlay to generate the overlaid blobs based on platform specific
> > configurations.
> >
> > The fdtdump program prints a readable version of a flat device-tree
> > file. This is a very useful tool to analyze the details of the overlay's
> > dtb and the final dtb produced by fdtoverlay after applying the
> > overlay's dtb to a base dtb.
>
> You can calso dump an FDT with:
>
> dtc -O dts XXX.dtb
>
> Is this sufficient for the desired functionality, or is there something
> additional in fdtdump that is needed?

Not for my usecase at least.

> If nothing additional needed, and there is no other justification for adding
> another program, I would prefer to leave fdtdump out.

Okay, then I will also remove the stale version of fdtdump which is
already there in kernel since a long time.

--
viresh