On Tue, Mar 7, 2017 at 6:10 PM, Tom Rini trini@konsulko.com wrote:
On Wed, Mar 08, 2017 at 02:09:46AM +0900, Masahiro Yamada wrote:
2017-02-27 15:24 GMT+09:00 Masahiro Yamada yamada.masahiro@socionext.com:
DTC 1.4.2 or later checks DT unit-address without reg property and vice-versa, and generates lots of warnings. Fixing DT files will take for a while. Until then, let's turn off the check unless building with W=*.
Introduce a new helper dtc-option to check if the option is supported in order to suppress warnings on older versions.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com
This is one possible answer to Tom's: https://www.mail-archive.com/u-boot@lists.denx.de/msg240328.html
He fixed the problem on travis-ci by commit a0f3e3d, but it is still annoying during the regular development. Perhaps we may want to hide the warnings (at least hidden in Linux Kernel by default). Or, is it better to keep it noisy to motivate people to fix their DT files? I am not quite sure...
Now I am sending this as RFC patch in case people may want to start discussion.
BTW, this is a counter-part of the patch I sent to the Kbuild sub-system (https://patchwork.kernel.org/patch/9592747/) because I want the U-Boot build system with Linux as much as possible. Let's see if I will get possible opinions in the Kbuild review.
I sent a similar patch for Linux, but the response was negative in the Kbuild subsystem.
So, this patch will be our own, if applied.
I think we should be proactive here and take this patch. Newer dtc will be seen more widely I believe as various overlay related changes go in upstream. Do you have anything you would change in a v2 non-RFC?
For reference they updated the kernel included dtc to upstream commit 0931cea3ba20 in 4.11 for overlay support [1] so I similarly updated the Fedora dtc to the same revision for consistency so I think this is a pragmatic approach.
Peter
[1] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6f...