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

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Date:	Wed, 14 Oct 2015 11:46:19 +0300
From:	Roger Quadros <rogerq@...com>
To:	Vignesh R <vigneshr@...com>, Tony Lindgren <tony@...mide.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	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>, "Gerlach, Dave" <d-gerlach@...com>
Subject: Re: [PATCH] ARM: dts: am437x-gp-evm: Add wakeup interrupt source for
 pixcir_i2c_ts

+Dave

On 14/10/15 08:52, Vignesh R wrote:
> On am437x-gp-evm, pixcir_i2c_ts can wakeup the system from lower 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>
> ---
>  arch/arm/boot/dts/am437x-gp-evm.dts | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
> index 22038f21f228..69e93af7df0d 100644
> --- a/arch/arm/boot/dts/am437x-gp-evm.dts
> +++ b/arch/arm/boot/dts/am437x-gp-evm.dts
> @@ -581,8 +581,13 @@
>  
>  		attb-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
>  
> +		interrupts-extended = <&gpio3 22 GPIO_ACTIVE_HIGH>,
> +				      <&am43xx_pinmux 0x264>;

How does this work?

interrupts-extended property must have
1) interrupt parent
2) interrupt number
3) interrupt flags

Your change doesn't seem to comply with those requirements.

> +		interrupt-names = "tsc", "wakeup";
> +
>  		touchscreen-size-x = <1024>;
>  		touchscreen-size-y = <600>;
> +		wakeup-source;
>  	};
>  
>  	ov2659@30 {
> 

cheers,
-roger
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