Le 28/02/2012 19:46, Simon Glass a écrit :
Hi Stephen,
On Tue, Feb 28, 2012 at 10:41 AM, Stephen Warren<swarren@xxxxxxxxxx> wrote:
Simon Glass wrote at Tuesday, February 28, 2012 11:37 AM:
On Tue, Feb 28, 2012 at 10:31 AM, Stephen Warren<swarren@xxxxxxxxxx> wrote:
Simon Glass wrote at Tuesday, February 28, 2012 10:38 AM:
...
I am going to add your binding, less the #clock-cells which U-Boot
currently can't support because it conflicts with the C preprocessor
(at some point I may look at a patch to use sed or some other means of
avoiding this).
Out of curiosity, why does the C preprocessor come into it? Is U-Boot's
build process running cpp on the .dts files or something? That's non-
standard, although perhaps it could be a useful standard...
Yes, but at the moment we only use it for '/include/ ARCH_CPU_DTS'.
Uggh. That's going to make the device tree files look different between
the kernel and U-Boot:-( With # disallowed in particular, it's going to
prevent U-Boot from /ever/ using the correct protocols for parsing the
device tree. This seems like an extremely bad idea.
Until we change it in U-Boot, you mean. We could move to sed or pre-
and post-process the file to remove and re-insert the #.
Rather, to convert # signs into something that the DTS cannot contain
and the compiler can withstand (and it should be printable ASCII, too).
is '##' a good candidate?
If so, a forward conversion would e.g. map '/include/' to '#include' and
any '#' to '##', and the reverse conversion would turn all '##' to '#'.
But something that simple is bound to be wrong in some way...
Amicalement,
--
Albert.
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