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authorMike Looijmans <mike.looijmans@topic.nl>2017-05-09 07:36:30 +0200
committerSebastian Reichel <sre@kernel.org>2017-05-15 15:12:38 +0200
commit9d556bb4ad51b2fa3ba30cda93b419b71c98ce33 (patch)
tree7192e5bc9b6e65ed112e0dc1e5c42076655385d7 /Documentation/devicetree/bindings/power
parentpower: supply: cpcap-charger: Fix charger voltages based on ADC values (diff)
downloadlinux-9d556bb4ad51b2fa3ba30cda93b419b71c98ce33.tar.xz
linux-9d556bb4ad51b2fa3ba30cda93b419b71c98ce33.zip
dt-bindings: power: supply: New bindings for ltc3651-charger
This adds the devicetree bindings documentation for the LTC3651 battery charger. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'Documentation/devicetree/bindings/power')
-rw-r--r--Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt27
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diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
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+++ b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
@@ -0,0 +1,27 @@
+ltc3651-charger
+
+Required properties:
+ - compatible: "lltc,ltc3651-charger"
+ - lltc,acpr-gpios: Connect to ACPR output. See remark below.
+
+Optional properties:
+ - lltc,fault-gpios: Connect to FAULT output. See remark below.
+ - lltc,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 to detect changes in
+line state. If the system is not capabale of providing interrupts, 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";
+ lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>;
+ lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>;
+ lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>;
+ };