This adds the devicetree bindings documentation for the LTC3651 battery charger.
Signed-off-by: Mike Looijmans <mike.looijm...@topic.nl>
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.../bindings/power/supply/ltc3651-charger.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644
Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
new file mode 100644
index 0000000..a7dd80f
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
@@ -0,0 +1,26 @@
+ltc3651-charger
+
+Required properties:
+ - compatible: "lltc,ltc3651-charger"
+ - acpr-gpios: Connect to ACPR output. See remark below.
+
+Optional properties:
+ - fault-gpios: Connect to FAULT output. See remark below.
+ - chrg-gpios: Connect to CHRG output. See remark below.
+
+The ltc3651 outputs are open-drain type and active low. The driver assumes the
+GPIO reports "active" when the output is asserted, so if the pins have been
+connected directly, the GPIO flags should be set to active low also.
+
+The driver will attempt to aquire interrupts for all GPIOs. If the system is
+not capabale of providing that, the driver cannot report changes and userspace
+will need to periodically read the sysfs attributes to detect changes.
+
+Example:
+
+ charger: battery-charger {
+ compatible = "lltc,ltc3651-charger";
+ acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>;
+ fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>;
+ chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>;
+ };
--
1.9.1
