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Message-ID: <550A4382.4030209@gmail.com>
Date: Wed, 18 Mar 2015 20:33:22 -0700
From: Frank Rowand <frowand.list@...il.com>
To: frowand.list@...il.com, Rob Herring <robh+dt@...nel.org>,
Grant Likely <grant.likely@...aro.org>,
Russell King <linux@....linux.org.uk>,
Michal Marek <mmarek@...e.cz>
CC: Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Leif Lindholm <leif.lindholm@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Pawel Moll <pawel.moll@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
linux-kbuild@...r.kernel.org,
Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: [patch 2/7] dt: dtb version: document chosen/dtb-info node binding
From: Frank Rowand <frank.rowand@...ymobile.com>
Add /chosen/dtb-node binding.
Signed-off-by: Frank Rowand <frank.rowand@...ymobile.com>
---
Documentation/devicetree/bindings/chosen.txt | 37 +++++++++++
Index: b/Documentation/devicetree/bindings/chosen.txt
===================================================================
--- a/Documentation/devicetree/bindings/chosen.txt
+++ b/Documentation/devicetree/bindings/chosen.txt
@@ -46,6 +46,43 @@ on PowerPC "stdout" if "stdout-path" is
should only use the "stdout-path" property.
+dtb-info node
+----------------
+
+Information that describes where the device tree blob (DTB) came from and the
+environment it was created in.
+
+This node is normally created by including arch/arm/boot/dts/skeleton.dtsi,
+which includes include/dt-bindings/version.dtsi.
+
+Properties:
+
+version
+ The version of the DTB. This is analagous to the linux kernel version.
+
+ This is a format free field intended for human consumption. User space
+ programs should not have any expections about this property.
+
+ The DTB number in this property is incremented each time a make that
+ creates one or more DTBs is invoked. If the make creates multiple
+ DTBs then this number is only incremented once.
+
+ The DTB number is stored in file .version_dtb.
+
+version-linux
+ The version of the linux kernel most recently built in the source
+ control system that contains the source used to build the DTB.
+
+ The linux kernel version number is not incremented for a make that
+ creates a DTB.
+
+dtb-path
+ The build directory relative path of the DTB.
+
+dts-path
+ The absolute path of the .dts file compiled to create the DTB.
+
+
Properties documented in other bindings
---------------------------------------
#address-cells video/simple-framebuffer-sunxi.txt
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