linux-kernel - Re: [PATCH 1/2 v2] device-tree: nexus7-flo: Remove power gpio key entry and use pmic8xxx-pwrkey

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Date:	Fri, 15 Apr 2016 11:57:12 -0500
From:	Rob Herring <robh+dt@...nel.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd.bergmann@...aro.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Andy Gross <agross@...eaurora.org>,
	Vinay Simha BN <simhavcs@...il.com>,
	Bjorn Andersson <bjorn.andersson@...aro.org>,
	Stephen Boyd <stephen.boyd@...aro.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/2 v2] device-tree: nexus7-flo: Remove power gpio key
 entry and use pmic8xxx-pwrkey

On Thu, Apr 14, 2016 at 4:07 PM, John Stultz <john.stultz@...aro.org> wrote:
> Since the pmic8xxx-pwrkey driver is already supported in the
> qcom-apq8064.dtsi, and the pmic8xxx-pwrkey supports logic to
> configure proper device shutdown when ps_hold goes low, it is
> better to use that driver then a generic gpio button.
>
> Thus this patch remove the gpio power key entry here, so we
> don't get double input events from having two drivers enabled.
>
> The one gotcha with the pmic8xxx-pwrkey is it has a fairly
> long debounce delay, which we shorten here to make the button
> behave as expected.
>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Arnd Bergmann <arnd.bergmann@...aro.org>
> Cc: Pawel Moll <pawel.moll@....com>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
> Cc: Kumar Gala <galak@...eaurora.org>
> Cc: Andy Gross <agross@...eaurora.org>
> Cc: Vinay Simha BN <simhavcs@...il.com>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Stephen Boyd <stephen.boyd@...aro.org>
> Cc: linux-arm-msm@...r.kernel.org
> Cc: devicetree@...r.kernel.org
> Signed-off-by: John Stultz <john.stultz@...aro.org>
> ---
> v2:
>  - Add wakeup-source entry as suggested by
>    Sudeep Holla <sudeep.holla@....com>
>
>  arch/arm/boot/dts/qcom-apq8064-asus-nexus7-flo.dts | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)

Acked-by: Rob Herring <robh@...nel.org>