From 1e47704e15f0907d2d8482ec939e3cb500bae558 Mon Sep 17 00:00:00 2001 From: Jan Kotas Date: Tue, 22 Jan 2019 10:42:15 +0000 Subject: [PATCH] dt-bindings: rtc: Add bindings for Cadence RTC This patch adds a DT binding documentation for Cadence RTC controller. Signed-off-by: Jan Kotas Signed-off-by: Alexandre Belloni --- .../devicetree/bindings/rtc/cdns,rtc.txt | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/cdns,rtc.txt diff --git a/Documentation/devicetree/bindings/rtc/cdns,rtc.txt b/Documentation/devicetree/bindings/rtc/cdns,rtc.txt new file mode 100644 index 000000000000..14a04487b432 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/cdns,rtc.txt @@ -0,0 +1,25 @@ +Cadence Real Time Clock + +The Cadence RTC controller with date, time and alarm capabilities. +The alarm may wake the system from low-power state. + +Required properties: +- compatible: Should be "cdns,rtc-r109v3" +- reg: Specifies base physical address and size of the register area. +- interrupts: A single interrupt specifier. +- clocks: Must contain two entries: + - pclk: APB registers clock + - ref_clk: reference 1Hz or 100Hz clock, depending on IP configuration + See ../clocks/clock-bindings.txt for details. + +Example: + rtc0: rtc@fd080000 { + compatible = "cdns,rtc-r109v3"; + reg = <0xfd080000 0x1000>; + + clock-names = "pclk", "ref_clk"; + clocks = <&sysclock>, <&refclock>; + + interrupt-parent = <&gic>; + interrupts = <0 6 IRQ_TYPE_LEVEL_HIGH>; + };