Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / rtc / rtc-palmas.txt

diff --git a/kernel/Documentation/devicetree/bindings/rtc/rtc-palmas.txt b/kernel/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
new file mode 100644 (file)
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+++ b/kernel/Documentation/devicetree/bindings/rtc/rtc-palmas.txt
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+Palmas RTC controller bindings
+
+Required properties:
+- compatible:
+  - "ti,palmas-rtc" for palma series of the RTC controller
+- interrupt-parent: Parent interrupt device, must be handle of palmas node.
+- interrupts: Interrupt number of RTC submodule on device.
+
+Optional properties:
+
+- ti,backup-battery-chargeable: The Palmas series device like TPS65913 or
+       TPS80036 supports the backup battery for powering the RTC when main
+       battery is removed or in very low power state. The backup battery
+       can be chargeable or non-chargeable. This flag will tells whether
+       battery is chargeable or not. If charging battery then driver can
+       enable the charging.
+- ti,backup-battery-charge-high-current: Enable high current charging in
+       backup battery. Device supports the < 100mA and > 100mA charging.
+       The high current will be > 100mA. Absence of this property will
+       charge battery to lower current i.e. < 100mA.
+
+Example:
+       palmas: tps65913@58 {
+               ...
+               palmas_rtc: rtc {
+                       compatible = "ti,palmas-rtc";
+                       interrupt-parent = <&palmas>;
+                       interrupts = <8 0>;
+                       ti,backup-battery-chargeable;
+                       ti,backup-battery-charge-high-current;
+               };
+               ...
+       };