linux-kernel - [PATCH v2] ARM: dts: am437x-gp-evm: Add wakeup interrupt source for pixcir_i2c

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Message-ID: <1444830865-30899-1-git-send-email-vigneshr@ti.com>
Date:	Wed, 14 Oct 2015 19:24:25 +0530
From:	Vignesh R <vigneshr@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Roger Quadros <rogerq@...com>, Dave Gerlach <d-gerlach@...com>,
	Benoit Cousson <bcousson@...libre.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	<linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Vignesh R <vigneshr@...com>
Subject: [PATCH v2] ARM: dts: am437x-gp-evm: Add wakeup interrupt source for pixcir_i2c_ts

On am437x-gp-evm, pixcir_i2c_ts can wakeup the system from low power
state via pinctrl and IO daisy chain using generic wakeirq framework.
With commit 3fffd1283927 ("i2c: allow specifying separate wakeup
interrupt in device tree") i2c core allows optional wakeirq to be
specified via device tree. Add wakeup irq entry to enable pixcir_i2c_ts
to wake the system from low power state.

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

Since v1:
 - correct interrupt flag.
 - add comment wrt wakeup interrupt.

 arch/arm/boot/dts/am437x-gp-evm.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 22038f21f228..9c324b5f09ac 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -581,8 +581,17 @@
 
 		attb-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
 
+		/*
+		 * 0x264 represents the offset of padconf register of
+		 * gpio3_22 from am43xx_pinmux base.
+		 */
+		interrupts-extended = <&gpio3 22 IRQ_TYPE_NONE>,
+				      <&am43xx_pinmux 0x264>;
+		interrupt-names = "tsc", "wakeup";
+
 		touchscreen-size-x = <1024>;
 		touchscreen-size-y = <600>;
+		wakeup-source;
 	};
 
 	ov2659@30 {
-- 
2.6.1

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