On 18 August 2014 01:16, Thierry Reding <[email protected]> wrote: > From: Thierry Reding <[email protected]> > > The fdt_for_each_subnode() iterator macro provided by this patch can be > used to iterate over a device tree node's subnodes. At each iteration a > loop variable will be set to the next subnode. > > Signed-off-by: Thierry Reding <[email protected]>
Acked-by: Simon Glass <[email protected]> Will this go upstream to dtc at some point? > --- > include/libfdt.h | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/include/libfdt.h b/include/libfdt.h > index 4d7fb2681669..0330d7a29a58 100644 > --- a/include/libfdt.h > +++ b/include/libfdt.h > @@ -163,6 +163,26 @@ int fdt_first_subnode(const void *fdt, int offset); > */ > int fdt_next_subnode(const void *fdt, int offset); > > +/** > + * fdt_for_each_subnode - iterate over all subnodes of a parent > + * > + * This is actually a wrapper around a for loop and would be used like so: > + * > + * fdt_for_each_subnode(fdt, node, parent) { > + * ... > + * use node > + * ... > + * } > + * > + * @fdt: FDT blob > + * @node: child node > + * @parent: parent node It might be worth mentioning the type of each of these since it is not in the macro. > + */ > +#define fdt_for_each_subnode(fdt, node, parent) \ > + for (node = fdt_first_subnode(fdt, parent); \ > + node >= 0; \ > + node = fdt_next_subnode(fdt, node)) > + > /**********************************************************************/ > /* General functions */ > /**********************************************************************/ > -- > 2.0.4 > Regards, Simon _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
