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| author | Pantelis Antoniou <pantelis.antoniou@konsulko.com> | 2016-12-07 12:48:21 +0800 |
|---|---|---|
| committer | SzuWei Lin <szuweilin@google.com> | 2017-02-17 11:30:51 +0800 |
| commit | 8876e278cfa7180d7929b32ce35442dbdc99c039 (patch) | |
| tree | aba44a3e15cdd2472343978e8b9123855c6216e6 /Documentation | |
| parent | 507cd9883ab5be53c88459fe5b3ea61384381712 (diff) | |
| download | dtc-8876e278cfa7180d7929b32ce35442dbdc99c039.tar.gz | |
overlay: Documentation for the overlay sugar syntax
There exists a syntactic sugar version of overlays which
make them simpler to write for the trivial case of a single target.
Document it in the device tree object internals.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Downloaded from https://marc.info/?l=devicetree&m=148111492925863&w=4
Change-Id: Iac4cb844f655516022926e7c18e7de3ae384e5e8
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/dt-object-internal.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/dt-object-internal.txt b/Documentation/dt-object-internal.txt index 51d68ab..624aa43 100644 --- a/Documentation/dt-object-internal.txt +++ b/Documentation/dt-object-internal.txt @@ -308,3 +308,20 @@ the run time loader must apply an offset to each phandle in every dynamic DT object loaded. The __local_fixups__ node records the offset relative to the start of every local reference within that property so that the loader can apply the offset. + +There is an alternative syntax to the expanded form for overlays with phandle +targets which makes the format similar to the one using in .dtsi include files. + +So for the &ocp target example above one can simply write: + +/dts-v1/; +/plugin/; +&ocp { + /* bar peripheral */ + bar { + compatible = "corp,bar"; + ... /* various properties and child nodes */ + } +}; + +The resulting dtb object is identical. |