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Date: Mon, 8 Aug 2016 13:27:20 -0500
From: Reza Arbab <arbab@...ux.vnet.ibm.com>
To: Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>,
Jonathan Corbet <corbet@....net>,
Bharata B Rao <bharata@...ux.vnet.ibm.com>,
Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
devicetree@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-doc@...r.kernel.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] dt-bindings: add doc for ibm,hotplug-aperture
Signed-off-by: Reza Arbab <arbab@...ux.vnet.ibm.com>
---
.../bindings/powerpc/opal/hotplug-aperture.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/powerpc/opal/hotplug-aperture.txt
diff --git a/Documentation/devicetree/bindings/powerpc/opal/hotplug-aperture.txt b/Documentation/devicetree/bindings/powerpc/opal/hotplug-aperture.txt
new file mode 100644
index 0000000..b8dffaa
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/opal/hotplug-aperture.txt
@@ -0,0 +1,26 @@
+Designated hotplug memory
+-------------------------
+
+This binding describes a region of hotplug memory which is not present at boot,
+allowing its eventual NUMA associativity to be prespecified.
+
+Required properties:
+
+- compatible
+ "ibm,hotplug-aperture"
+
+- reg
+ base address and size of the region (standard definition)
+
+- ibm,associativity
+ NUMA associativity (standard definition)
+
+Example:
+
+A 2 GiB aperture at 0x100000000, to be part of nid 3 when hotplugged:
+
+ hotplug-memory@...000000 {
+ compatible = "ibm,hotplug-aperture";
+ reg = <0x0 0x100000000 0x0 0x80000000>;
+ ibm,associativity = <0x4 0x0 0x0 0x0 0x3>;
+ };
--
1.8.3.1
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