[PATCH 2/2] ARM: dts: am335x-icev2: Add nodes for gpio-decoder

From	Vignesh R <vigneshr@ti.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/2] ARM: dts: am335x-icev2: Add nodes for gpio-decoder
Date	2016-08-12 07:00 +0200
Message-ID	<s5cJz-5sg-1@gated-at.bofh.it> (permalink)
References	<s5cJz-5sg-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

AM335x ICE board has a rotary-switch connected to PCA9536 I2C GPIO
expander. The position of the rotary-switch is reflected by status of
GPIO lines. Add gpio-decoder node to read these GPIO line status via
gpio-decoder driver and report it as an input event to the system.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 arch/arm/boot/dts/am335x-icev2.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-icev2.dts b/arch/arm/boot/dts/am335x-icev2.dts
index 7d8b8fefdf08..f2de594343f2 100644
--- a/arch/arm/boot/dts/am335x-icev2.dts
+++ b/arch/arm/boot/dts/am335x-icev2.dts
@@ -139,6 +139,15 @@
 			default-state = "off";
 		};
 	};
+	gpio-decoder0 {
+		compatible = "gpio-decoder";
+		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 */
+		gpio-decoder,max-value = <9>;
+	};
 };
 
 &am33xx_pinmux {
-- 
2.9.2

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 2/2] ARM: dts: am335x-icev2: Add nodes for gpio-decoder Vignesh R <vigneshr@ti.com> - 2016-08-12 07:00 +0200
  Re: [PATCH 2/2] ARM: dts: am335x-icev2: Add nodes for gpio-decoder Rob Herring <robh@kernel.org> - 2016-08-12 21:10 +0200

csiph-web