From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frank Rowand Subject: Re: [PATCH v2] dtc: create tool to diff device trees Date: Fri, 15 Jan 2016 15:14:17 -0800 Message-ID: <56997D49.6000203@gmail.com> References: <568EB672.6060300@gmail.com> Reply-To: frowand.list@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <568EB672.6060300@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring Cc: Grant Likely , david@gibson.dropbear.id.au, "devicetree@vger.kernel.org" , Linux Kernel list List-Id: devicetree@vger.kernel.org Hi Rob, On 1/7/2016 11:03 AM, Frank Rowand wrote: > From: Frank Rowand > > 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 > --- > > 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