linux-kernel - [PATCH v4 5/5] rtc: isl1219: add device tree docu

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Message-ID: <20180710090710.9066-6-Denis.Osterland@diehl.com>
Date:   Tue, 10 Jul 2018 09:44:15 +0000
From:   Denis OSTERLAND <denis.osterland@...hl.com>
To:     "mark.rutland@....com" <mark.rutland@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
        "m.grzeschik@...gutronix.de" <m.grzeschik@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Denis OSTERLAND <denis.osterland@...hl.com>
Subject: [PATCH v4 5/5] rtc: isl1219: add device tree docu

From: Denis Osterland <Denis.Osterland@...hl.com>

The devicetree documentation for the ISL1219 device tree
binding is added with an short example. It is not a trivial
device, because it supports two interrupt souces.

Signed-off-by: Denis Osterland <Denis.Osterland@...hl.com>
---
 .../devicetree/bindings/rtc/isil,isl1219.txt  | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/isil,isl1219.txt

diff --git a/Documentation/devicetree/bindings/rtc/isil,isl1219.txt b/Documentation/devicetree/bindings/rtc/isil,isl1219.txt
new file mode 100644
index 000000000000..f26f1e9d4bde
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/isil,isl1219.txt
@@ -0,0 +1,29 @@
+Intersil ISL1219 I2C RTC/Alarm chip with event in
+
+ISL1219 has additional pins EVIN and #EVDET for tamper detection.
+
+Required properties supported by the device:
+
+ - "compatible": must be "isil,isl1219"
+ - "reg": I2C bus address of the device
+
+Optional properties:
+
+ - "interrupt-names": list which may contains "irq" and "evdet"
+ - "interrupt-parent", "interrupts", "interrupts-extended":
+   for passing the interrupt line of the SoC connected to #IRQ pin
+   and #EVDET pin of the RTC chip.
+ - "isil,ev-evienb": if present bit can be set to disable event input pull-up
+
+
+Example isl1219 node with #IRQ pin connected to SoC gpio1 pin12
+ and #EVDET pin connected to SoC gpio2 pin 24:
+
+	isl1219: rtc@68 {
+		compatible = "isil,isl1219";
+		reg = <0x68>;
+		interrupt-names = "irq", "evdet";
+		interrupts-extended = <&gpio1 12 IRQ_TYPE_EDGE_FALLING>,
+			<&gpio2 24 IRQ_TYPE_EDGE_FALLING>;
+	};
+
-- 
2.18.0



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