dt: binding documentation for bq2415x charger

Add devicetree binding documentation for bq2415x charger.

Signed-off-by: Sebastian Reichel <sre@debian.org>
Acked-by: Pavel Machek <pavel@ucw.cz>

1 files changed, 47 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/power/bq2415x.txt b/Documentation/devicetree/bindings/power/bq2415x.txt
new file mode 100644
index 000000000000..d0327f0b59ad
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/bq2415x.txt
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+Binding for TI bq2415x Li-Ion Charger
+
+Required properties:
+- compatible: Should contain one of the following:
+ * "ti,bq24150"
+ * "ti,bq24150"
+ * "ti,bq24150a"
+ * "ti,bq24151"
+ * "ti,bq24151a"
+ * "ti,bq24152"
+ * "ti,bq24153"
+ * "ti,bq24153a"
+ * "ti,bq24155"
+ * "ti,bq24156"
+ * "ti,bq24156a"
+ * "ti,bq24158"
+- reg:                     integer, i2c address of the device.
+- ti,current-limit:        integer, initial maximum current charger can pull
+                           from power supply in mA.
+- ti,weak-battery-voltage: integer, weak battery voltage threshold in mV.
+                           The chip will use slow precharge if battery voltage
+                           is below this value.
+- ti,battery-regulation-voltage: integer, maximum charging voltage in mV.
+- ti,charge-current:       integer, maximum charging current in mA.
+- ti,termination-current:  integer, charge will be terminated when current in
+                           constant-voltage phase drops below this value (in mA).
+- ti,resistor-sense:       integer, value of sensing resistor in milliohm.
+
+Optional properties:
+- ti,usb-charger-detection: phandle to usb charger detection device.
+                            (required for auto mode)
+
+Example from Nokia N900:
+
+bq24150a {
+        compatible = "ti,bq24150a";
+        reg = <0x6b>;
+
+        ti,current-limit = <100>;
+        ti,weak-battery-voltage = <3400>;
+        ti,battery-regulation-voltage = <4200>;
+        ti,charge-current = <650>;
+        ti,termination-current = <100>;
+        ti,resistor-sense = <68>;
+
+        ti,usb-charger-detection = <&isp1704>;
+};