linux-kernel - [PATCH 1/2] dt-bindings: rtc: Add bindings for Cadence RTC

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Message-ID: <20190108122242.12411-2-jank@cadence.com>
Date:   Tue, 8 Jan 2019 12:22:41 +0000
From:   Jan Kotas <jank@...ence.com>
To:     <a.zummo@...ertech.it>, <alexandre.belloni@...tlin.com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>
CC:     <linux-rtc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Jan Kotas <jank@...ence.com>
Subject: [PATCH 1/2] dt-bindings: rtc: Add bindings for Cadence RTC

This patch adds a DT binding documentation for
Cadence RTC controller.

Signed-off-by: Jan Kotas <jank@...ence.com>
---
 Documentation/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 000000000..40713bbbe
--- /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 of 100Hz clock, depending on IP configuration
+	See ../clocks/clock-bindings.txt for details.
+
+Example:
+        rtc0: rtc@...80000 {
+        	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>;
+        };
-- 
2.15.0