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From: Tim Bird <tim.bird@sonymobile.com>
To: <arnd@arndb.de>, <gregkh@linuxfoundation.org>,
        <devicetree@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>
CC: <robh+dt@kernel.org>, <pawel.moll@arm.com>, <mark.rutland@arm.com>,
        <ijc+devicetree@hellion.org.uk>, <linux-kernel@vger.kernel.org>,
        <bjorn.andersson@sonymobile.com>, Tim Bird <tim.bird@sonymobile.com>
Subject: [PATCH 1/3] ARM: dts: qcom: Add binding for the qcom coincell charger
Date: Mon, 13 Jul 2015 16:39:30 -0700
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This binding is used to configure the driver for the coincell charger
found in Qualcomm PMICs.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
---
 .../bindings/power/qcom,coincell-charger.txt       | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/qcom,coincell-charger.txt

diff --git a/Documentation/devicetree/bindings/power/qcom,coincell-charger.txt b/Documentation/devicetree/bindings/power/qcom,coincell-charger.txt
new file mode 100644
index 0000000..bf39e2a
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/qcom,coincell-charger.txt
@@ -0,0 +1,44 @@
+Qualcomm Coincell Charger:
+
+The hardware block controls charging for a coincell or capacitor that is
+used to provide power backup for certain features of the power management
+IC (PMIC)
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: must be: "qcom,pm8941-coincell"
+
+- reg:
+	Usage: required
+	Value type: <u32>
+	Definition: base address of the coincell charger registers
+
+- qcom,rset-ohms:
+	Usage: required
+	Value type: <u32>
+	Definition: resistance (in ohms) for current-limiting resistor
+		must be one of: 800, 1200, 1700, 2100
+
+- qcom,vset-millivolts:
+	Usage: required
+	Value type: <u32>
+	Definition: voltage (in millivolts) to apply for charging
+		must be one of: 2500, 3000, 3100, 3200
+
+- qcom,charge-enable:
+	Usage: optional
+	Value type: <u32> or <none>
+	Definition: definining this property, with an optional non-zero
+		value, enables charging
+
+Examples:
+
+	qcom,coincell@2800 {
+		compatible = "qcom,pm8941-coincell";
+		reg = <0x2800>;
+
+		qcom,rset-ohms = <2100>;
+		qcom,vset-millivolts = <3000>;
+		qcom,charge-enable;
+	};
--
1.8.2.2

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