Re: [PATCH v2] dtc: create tool to diff device trees

[Frank Rowand <frowand.list@gmail.com>]

Hi Rob,

On 1/7/2016 11:03 AM, Frank Rowand wrote:
> From: Frank Rowand <frank.rowand@sonymobile.com>
> 
> Create script to diff device trees.
> 
> The device tree can be in any of the forms recognized by the dtc compiler:
>   - source
>   - binary blob
>   - file system tree (from /proc/devicetree)
> 
> If the device tree is a source file, then it is pre-processed in the
> same way as it would be when built in the linux kernel source tree
> before diffing.
> 
> Signed-off-by: Frank Rowand <frank.rowand@sonymobile.com>
> ---
> 
> Tools to develop and debug device tree are somewhat inadequate.  This is a
> small step in improving the situation.
> 
> Rationale for and examples of using the script are provided in slides
> 1 - 78 of the elce 2015 presentation "Solving Device Tree Issues",
> which can be found at:
> 
>    http://elinux.org/images/0/04/Dt_debugging_elce_2015_151006_0421.pdf
> 
> (The script was named dtdiff instead of dtx_diff in the presentation.)
> 
> Changes in v2:
>   - Remove dt-bindings from list of includes in cpp_flags
>   - Remove arch_dtc_flags, which were generated from the arch specific
>     dts makefile
>   - Reformat to 8 character tabs
>   - compile_to_dts(): added back missing return for binary blob
> 
> 
>  scripts/dtc/dtx_diff |  343 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 343 insertions(+)

< snip >

Did v2 resolve your issues, or would you like some additional changes?

Thanks,

Frank