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author | David Gibson <david@gibson.dropbear.id.au> | 2009-11-26 15:37:13 +1100 |
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committer | Gerald Van Baren <gvb@unssw.com> | 2011-07-14 21:03:53 -0400 |
commit | 05a22ba096fb996bb69ab020a8d08aafac2c28ba (patch) | |
tree | 8f4019af405604abed59b5e05df4be05f166637d /include/libfdt.h | |
parent | 68d4230c3ccce96a72c5b99e48399bf1796fe3c6 (diff) |
Support ePAPR compliant phandle properties
Currently, the Linux kernel, libfdt and dtc, when using flattened
device trees encode a node's phandle into a property named
"linux,phandle". The ePAPR specification, however - aiming as it is
to not be a Linux specific spec - requires that phandles be encoded in
a property named simply "phandle".
This patch adds support for this newer approach to dtc and libfdt.
Specifically:
- fdt_get_phandle() will now return the correct phandle if it
is supplied in either of these properties
- fdt_node_offset_by_phandle() will correctly find a node with
the given phandle encoded in either property.
- By default, when auto-generating phandles, dtc will encode
it into both properties for maximum compatibility. A new -H
option allows either only old-style or only new-style
properties to be generated.
- If phandle properties are explicitly supplied in the dts
file, dtc will not auto-generate ones in the alternate format.
- If both properties are supplied, dtc will check that they
have the same value.
- Some existing testcases are updated to use a mix of old and
new-style phandles, partially testing the changes.
- A new phandle_format test further tests the libfdt support,
and the -H option.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This was extracted from the DTC commit:
d75b33af676d0beac8398651a7f09037555a550b Mon Sep 17 00:00:00 2001
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
Diffstat (limited to 'include/libfdt.h')
0 files changed, 0 insertions, 0 deletions