linux-kernel - [RFC PATCH 2/2] ARM: dts: am335x-icev2: Add rotary-encoder node

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Message-ID: <1463648641-6931-3-git-send-email-vigneshr@ti.com>
Date:	Thu, 19 May 2016 14:34:01 +0530
From:	Vignesh R <vigneshr@...com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Tony Lindgren <tony@...mide.com>
CC:	Jonathan Corbet <corbet@....net>, Johan Hovold <johan@...nel.org>,
	Sylvain Rochet <sylvain.rochet@...secur.com>,
	Vignesh R <vigneshr@...com>,
	Masanari Iida <standby24x7@...il.com>,
	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	S Twiss <stwiss.opensource@...semi.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Moritz Fischer <moritz.fischer@...us.com>,
	Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Timo Teras <timo.teras@....fi>,
	Guido Martinez <guido@...guardiasur.com.ar>,
	Clifton Barnes <clifton.a.barnes@...il.com>,
	Uwe Kleine-Konig <u.kleine-koenig@...gutronix.de>,
	<linux-input@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [RFC PATCH 2/2] ARM: dts: am335x-icev2: Add rotary-encoder node

AM335x ICE board has a rotary-encoder connected to PCA9536 I2C GPIO
expander. Add DT entry for the same.

Signed-off-by: Vignesh R <vigneshr@...com>
---

depends on patches to Add TI PCA9536 node posted to linux-gpio:
http://www.spinics.net/lists/arm-kernel/msg505194.html

 arch/arm/boot/dts/am335x-icev2.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-icev2.dts b/arch/arm/boot/dts/am335x-icev2.dts
index 7d8b8fefdf08..672dccbf203d 100644
--- a/arch/arm/boot/dts/am335x-icev2.dts
+++ b/arch/arm/boot/dts/am335x-icev2.dts
@@ -139,6 +139,17 @@
 			default-state = "off";
 		};
 	};
+
+	rotary-in0 {
+		compatible = "rotary-encoder";
+		gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>,
+			<&pca9536 2 GPIO_ACTIVE_HIGH>,
+			<&pca9536 1 GPIO_ACTIVE_HIGH>,
+			<&pca9536 0 GPIO_ACTIVE_HIGH>;
+		linux,axis = <0>; /* ABS_X */
+		rotary-encoder,steps = <10>;
+		rotary-encoder,absolute-encoder;
+	};
 };
 
 &am33xx_pinmux {
-- 
2.8.2