linux-kernel - [PATCH] Documentation: devicetree: "linux,usable-memory" property

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Message-Id: <20161223161747.9986-1-xypron.glpk@gmx.de>
Date:   Fri, 23 Dec 2016 17:17:47 +0100
From:   Heinrich Schuchardt <xypron.glpk@....de>
To:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <xypron.glpk@....de>
Subject: [PATCH] Documentation: devicetree: "linux,usable-memory" property

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@....de>
---
 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