linux-kernel - Re: [PATCH RESEND 1/4] ARM: dts: Add power and lid GPIO keys pinctrl for exynos5250-snow

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Date:	Wed, 14 Jan 2015 16:37:49 +0100
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Kukjin Kim <kgene@...nel.org>
CC:	Kukjin Kim <kgene.kim@...sung.com>,
	linux-samsung-soc@...r.kernel.org,
	Doug Anderson <dianders@...omium.org>,
	linux-kernel@...r.kernel.org, Kevin Hilman <khilman@...aro.org>,
	Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RESEND 1/4] ARM: dts: Add power and lid GPIO keys pinctrl
 for exynos5250-snow

Hello Kukjin,

On 01/14/2015 04:17 PM, Kukjin Kim wrote:
>>  
>>  &pinctrl_0 {
>> +	power_key_irq: power-key-irq {
>> +		samsung,pins = "gpx1-3";
>> +		samsung,pin-function = <0xf>;
> 
> I think, this setting should be same with exynos5250-spring but different.
> 
> from: arch/arm/boot/dts/exynos5250-spring.dts
> 491         power_key_irq: power-key-irq {
> 492                 samsung,pins = "gpx1-3";
> 493                 samsung,pin-function = <0>;
> 494                 samsung,pin-pud = <0>;
> 495                 samsung,pin-drv = <0>;
> 496         };
> 
> Hmm...0xf should be correct so need to fix the spring DT?
> 

Yes, the same problem has exynos5250-snow.dts. This is less relevant now
after commit f6a8249f9e55 ("pinctrl: exynos: Lock GPIOs as interrupts
when used as EINTs") that moved the pinmux reconfiguration to
.irq_{request,release}_resources() preventing the pads to be reconfigured
as regulator input/output.

But still for correctness we should audit spring / snow and change to 0xf.

Best regards,
Javier

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