Regarding dtc+cpp support

[Padma Venkat]

Hi Stephen,

I am trying to add a header file for samsung audio subsystem clk
definitions, which can be used in kernel and dt files.
I applied following patches posted by you in my working tree.


[1/7] kbuild: create an "include chroot" for DT bindings
[2/7] kbuild: fixdep: support concatenated dep files
[3/7] kbuild: cmd_dtc_cpp: extract deps from both gcc -E and dtc
[4/7] kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp
[5/7] ARM: dt: add header to define GPIO flags
[6/7] ARM: dt: add header to define IRQ flags
[7/7] ARM: dt: create a DT header for the GIC

I created a header file in
arch/arm/boot/dts/include/clk/samsung-audss-clk.h and I included this
header in driver and dtsi files

Please see the code snippet in dtsi below.

#include <dt-bindings/clk/samsung-audss-clk.h>
/include/ "skeleton.dtsi"
/include/ "exynos5250-pinctrl.dtsi

In driver it is compiling successfully but in dtsi files I am getting
the follwing compilation error.

Error: arch/arm/boot/dts/exynos5250.dtsi:21.1-9 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [arch/arm/boot/dts/exynos5250-arndale.dtb] Error 1
make[1]: *** Waiting for unfinished jobs....
  DTC     arch/arm/boot/dts/exynos5250-snow.dtb
Error: arch/arm/boot/dts/exynos5250.dtsi:21.1-9 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [arch/arm/boot/dts/exynos5250-smdk5250.dtb] Error 1
Error: arch/arm/boot/dts/exynos5250.dtsi:21.1-9 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [arch/arm/boot/dts/exynos5250-snow.dtb] Error 1
make: *** [dtbs] Error 2
make: *** Waiting for unfinished jobs....

where "#include <dt-bindings/clk/samsung-audss-clk.h>" is the 21st
line in the dtsi file.

Please let me know if any extra patches are required to solve this
compilation error?

Best Regards
Padma