linux-kernel - [PATCH v2 3/9] devicetree: bindings: Document qcom,saw2 node

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Message-Id: <1387845593-10050-4-git-send-email-sboyd@codeaurora.org>
Date:	Mon, 23 Dec 2013 16:39:47 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	David Brown <davidb@...eaurora.org>,
	Rohit Vaswani <rvaswani@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	Mark Rutland <mark.rutland@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Russell King <linux@....linux.org.uk>
Subject: [PATCH v2 3/9] devicetree: bindings: Document qcom,saw2 node

The saw2 binding describes the SPM/AVS wrapper hardware used to
control the regulator supplying voltage to the Krait CPUs.

Cc: <devicetree@...r.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
---
 .../devicetree/bindings/arm/msm/qcom,saw2.txt      | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt

diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt b/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
new file mode 100644
index 0000000..1505fb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
@@ -0,0 +1,35 @@
+SPM AVS Wrapper 2 (SAW2)
+
+The SAW2 is a wrapper around the Subsystem Power Manager (SPM) and the
+Adaptive Voltage Scaling (AVS) hardware. The SPM is a programmable
+micro-controller that transitions a piece of hardware (like a processor or
+subsystem) into and out of low power modes via a direct connection to
+the PMIC. It can also be wired up to interact with other processors in the
+system, notifying them when a low power state is entered or exited.
+
+PROPERTIES
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: shall contain "qcom,saw2". A more specific value should be
+		    one of:
+			 "qcom,saw2-v1"
+			 "qcom,saw2-v1.1"
+			 "qcom,saw2-v2"
+			 "qcom,saw2-v2.1"
+
+- reg:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: the first element specifies the base address and size of
+		    the register region. An optional second element specifies
+		    the base address and size of the alias register region.
+
+
+Example:
+
+	regulator@...9000 {
+		compatible = "qcom,saw2";
+		reg = <0x02099000 0x1000>, <0x02009000 0x1000>;
+	};
-- 
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