This is missing at present and the fdtget tool is no-longer trivial. Add
a little bit of information.
This might be useful for distributions which want to provide a man page.
Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
---
Changes in v2:
- Document fdtget as it is now, rather than with the phandle decoding feature
Documentation/manual.txt | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/Documentation/manual.txt b/Documentation/manual.txt
index 72403ac..af8d315 100644
--- a/Documentation/manual.txt
+++ b/Documentation/manual.txt
@@ -693,3 +693,34 @@ Where options are:
-i, --input Input base DT blob
-o, --output Output DT blob
-v, --verbose Verbose message output
+
+4 ) fdtget -- Read properties from device tree
+
+This command can be used to obtain individual values from the device tree in a
+nicely formatted way. You can specify multiple nodes to display (when using -p)
+or multiple node/property pairs (when not using -p). For the latter, each
+property is displayed on its own line, with a space between each cell within
+the property.
+
+The syntax of the fdtget command is:
+
+ fdtget <options> <dt file> [<node> <property>]...
+ fdtget -p <options> <dt file> [<node> ]...
+
+where options are:
+
+ <type> s=string, i=int, u=unsigned, x=hex
+ Optional modifier prefix:
+ hh or b=byte, h=2 byte, l=4 byte (default)
+
+ Options: -[t:pld:hV]
+ -t, --type <arg> Type of data
+ -p, --properties List properties for each node
+ -l, --list List subnodes for each node
+ -d, --default <arg> Default value to display when the property is missing
+ -h, --help Print this help and exit
+ -V, --version Print version and exit
+
+If -t is not provided, fdtget will try to figure out the type, trying to detect
+strings, string lists and the size of each value in the property. This is
+similar to how fdtdump works, and uses the same heuristics.
--
2.17.1.1185.g55be947832-goog
--
To unsubscribe from this list: send the line "unsubscribe devicetree-compiler" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
