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[PATCH v2 1/3] ARM: dts: qcom: Add binding for the qcom coincell charger

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  [PATCH v2 1/3] ARM: dts: qcom: Add binding for the qcom coincell charger Tim Bird <tim.bird@sonymobile.com> - 2015-07-15 01:30 +0200
    [PATCH v2 3/3] ARM: dts: qcom: Add dts changes for qcom coincell charger Tim Bird <tim.bird@sonymobile.com> - 2015-07-15 01:30 +0200

#1184131 — [PATCH v2 1/3] ARM: dts: qcom: Add binding for the qcom coincell charger

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>
---

Changes in v2:
 - remove 'qcom,' from example node name
 - Added reference to parent node pm8941@0 and binding doc for it

 .../bindings/power/qcom,coincell-charger.txt       | 50 ++++++++++++++++++++++
 1 file changed, 50 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..f0316c0
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/qcom,coincell-charger.txt
@@ -0,0 +1,50 @@
+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
+
+This charger is a sub-node of one of the 8941 PMIC blocks, and is specified
+as a child node in DTS of that node.  See ../mfd/qcom,spmi-pmic.txt and
+../mfd/qcom-pm8xxx.txt
+
+Examples:
+
+	pm8941@0 {
+		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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#1184135 — [PATCH v2 3/3] ARM: dts: qcom: Add dts changes for qcom coincell charger

Add framework for the coincell charger DT block in pm8941 file, and
actual values for honami battery in the honami dts file.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
---

Changes in v2:
 - change coincell node name to remove 'qcom,' prefix

 arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts | 11 +++++++++++
 arch/arm/boot/dts/qcom-pm8941.dtsi                    |  6 ++++++
 2 files changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
index bd35b06..3705f34 100644
--- a/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
+++ b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts
@@ -17,3 +17,14 @@
 		status = "ok";
 	};
 };
+
+&spmi_bus {
+	pm8941@0 {
+		coincell@2800 {
+			status = "ok";
+			qcom,rset-ohms = <2100>;
+			qcom,vset-millivolts = <3000>;
+			qcom,charge-enable;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/qcom-pm8941.dtsi b/arch/arm/boot/dts/qcom-pm8941.dtsi
index aa774e6..968f104 100644
--- a/arch/arm/boot/dts/qcom-pm8941.dtsi
+++ b/arch/arm/boot/dts/qcom-pm8941.dtsi
@@ -125,6 +125,12 @@
 			interrupts = <0x0 0x36 0x0 IRQ_TYPE_EDGE_RISING>;
 			qcom,external-resistor-micro-ohms = <10000>;
 		};
+
+		coincell@2800 {
+			compatible = "qcom,pm8941-coincell";
+			reg = <0x2800>;
+			status = "disabled";
+		};
 	};
 
 	usid1: pm8941@1 {
-- 
1.8.2.2

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