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-rw-r--r--Documentation/powerpc/booting-without-of.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index ee551c6ea23..217e51768b8 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -719,6 +719,11 @@ address which can extend beyond that limit.
- model : this is your board name/model
- #address-cells : address representation for "root" devices
- #size-cells: the size representation for "root" devices
+ - device_type : This property shouldn't be necessary. However, if
+ you decide to create a device_type for your root node, make sure it
+ is _not_ "chrp" unless your platform is a pSeries or PAPR compliant
+ one for 64-bit, or a CHRP-type machine for 32-bit as this will
+ matched by the kernel this way.
Additionally, some recommended properties are: