linux-kernel - [DEBUG 01/10] dt-bindings: Add doc for ibm,hotplug-aperture

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Message-Id: <1477284149-2976-2-git-send-email-khandual@linux.vnet.ibm.com>
Date:   Mon, 24 Oct 2016 10:12:20 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     mhocko@...e.com, js1304@...il.com, vbabka@...e.cz, mgorman@...e.de,
        minchan@...nel.org, akpm@...ux-foundation.org,
        aneesh.kumar@...ux.vnet.ibm.com, bsingharora@...il.com
Subject: [DEBUG 01/10] dt-bindings: Add doc for ibm,hotplug-aperture

From: Reza Arbab <arbab@...ux.vnet.ibm.com>

Signed-off-by: Reza Arbab <arbab@...ux.vnet.ibm.com>
Signed-off-by: Anshuman Khandual <khandual@...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..04dde03
--- /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>;
+	};
-- 
2.1.0