Memory nodes may have a "linux,usable-memory" property
overriding the reg property.
This patch adds the missing documentation.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
---
Documentation/devicetree/booting-without-of.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt
index 280d283304bb..92712c5604b0 100644
--- a/Documentation/devicetree/booting-without-of.txt
+++ b/Documentation/devicetree/booting-without-of.txt
@@ -981,6 +981,10 @@ compatibility.
removed later. The kernel can take this into consideration when
doing nonmovable allocations and when laying out memory zones.
+ - linux,usable-memory : This property overrides the reg property.
+ It can be used if the bootloader changes the reg property to
+ improper values.
+
e) The /chosen node
This node is a bit "special". Normally, that's where Open Firmware
--
2.11.0
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