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Date:   Tue, 12 Jan 2021 10:38:18 +0530
From:   Viresh Kumar <>
To:     Frank Rowand <>
Cc:     Pantelis Antoniou <>,
        Rob Herring <>,,,,
        Vincent Guittot <>,
        Bill Mills <>,,
        Masahiro Yamada <>
Subject: Re: [PATCH V3 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools

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.


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