From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <jic23@kernel.org>, <linux@armlinux.org.uk>, <robh+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <linux-iio@vger.kernel.org>, <mark.rutland@arm.com>,
<mcoquelin.stm32@gmail.com>, <alexandre.torgue@st.com>,
<lars@metafoo.de>, <knaack.h@gmx.de>, <pmeerw@pmeerw.net>,
<fabrice.gasnier@st.com>, <benjamin.gaignard@linaro.org>,
<benjamin.gaignard@st.com>, <linus.walleij@linaro.org>
Subject: [RFC 3/4] dt-bindings: iio: add support for GPIO triggers
Date: Fri, 17 Feb 2017 17:03:48 +0100 [thread overview]
Message-ID: <1487347429-31761-4-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1487347429-31761-1-git-send-email-fabrice.gasnier@st.com>
Document Industrial I/O GPIO trigger support.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
.../bindings/iio/trigger/iio-trig-gpio.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/trigger/iio-trig-gpio.txt
diff --git a/Documentation/devicetree/bindings/iio/trigger/iio-trig-gpio.txt b/Documentation/devicetree/bindings/iio/trigger/iio-trig-gpio.txt
new file mode 100644
index 0000000..a8dbf5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/trigger/iio-trig-gpio.txt
@@ -0,0 +1,26 @@
+Industrial I/O - GPIO based trigger
+
+GPIOs may be used as IIO trigger provider, when trigger is connected to
+GPIO lines.
+
+Required properties:
+- compatible: Should be "iio-gpio-trigger"
+- gpios: Should specify one GPIO line used as trigger source.
+ See Documentation/devicetree/bindings/gpio/gpio.txt
+- #io-trigger-cells: Should be 0, as simple trigger provider.
+ See Documentation/devicetree/bindings/iio/iio-bindings.txt
+
+Optional properties:
+- label: String to specifiy trigger name.
+- gpio-trigger-rising-edge: A rising edge on GPIO will trigger.
+- gpio-trigger-falling-edge: A falling edge on GPIO will trigger.
+ Note: Both rising and falling edge may be used. In case none of
+ rising or falling edge is selected, rising edge is selected by
+ default.
+
+Example:
+ gpiotrig0: iio-gpio-trigger0 {
+ #io-trigger-cells = <0>;
+ compatible = "iio-gpio-trigger";
+ gpios = <&gpioa 11 0>;
+ }
--
1.9.1
next prev parent reply other threads:[~2017-02-17 16:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-17 16:03 [RFC 0/4] iio: trigger: Add OF support and GPIO based trigger Fabrice Gasnier
2017-02-17 16:03 ` [RFC 1/4] dt-bindings: iio: introduce trigger providers, consumers Fabrice Gasnier
2017-02-17 16:03 ` [RFC 2/4] iio: trigger: add OF support Fabrice Gasnier
2017-02-17 16:03 ` Fabrice Gasnier [this message]
2017-02-18 19:22 ` [RFC 3/4] dt-bindings: iio: add support for GPIO triggers Jonathan Cameron
2017-02-23 15:03 ` Linus Walleij
2017-02-23 15:45 ` Fabrice Gasnier
2017-02-17 16:03 ` [RFC 4/4] iio: trigger: add GPIO trigger Fabrice Gasnier
2017-02-17 16:16 ` Lars-Peter Clausen
2017-02-18 19:19 ` Jonathan Cameron
2017-02-20 16:24 ` Fabrice Gasnier
2017-02-25 16:21 ` Jonathan Cameron
2017-02-17 16:23 ` [RFC 0/4] iio: trigger: Add OF support and GPIO based trigger Daniel Baluta
2017-02-18 19:07 ` Jonathan Cameron
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