linux-kernel - Re: [PATCH V2] ARM: dts: am57xx-beagle-x15: Add GPIO controlled fan node

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Message-ID: <20150107235815.GA17239@kahuna>
Date:	Wed, 7 Jan 2015 17:58:16 -0600
From:	Nishanth Menon <nm@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Benoît Cousson <bcousson@...libre.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<balbi@...com>
Subject: Re: [PATCH V2] ARM: dts: am57xx-beagle-x15: Add GPIO controlled fan
 node

On 15:44-20150107, Tony Lindgren wrote:
> * Nishanth Menon <nm@...com> [141205 09:51]:
> > TPS gpio now controls a 5v 500mA TL5209 regulator which may be supply
> > a fan (such as AFB02505HHB) over J1 connector for various purposes.
> > Provide device tree node to enable the same.
> > 
> > Signed-off-by: Nishanth Menon <nm@...com>
> 
> Applying into omap-for-v3.20/dt thanks.
> 
> Tony
Could you pick up the very latest rev:
https://patchwork.kernel.org/patch/5569521/ ?


> 
> > ---
> > 
> > V2: review comment updates
> > 	review comments update
> > 		- Sanitized outlook-ified name back to normal ;) 
> > 		- removed unnecessary pinctrl-names property.
> > V1: https://patchwork.kernel.org/patch/5444911/
> > 
> > 
> > Depends on the following:
> > https://patchwork.kernel.org/patch/5439201/
> > https://patchwork.kernel.org/patch/5439191/
> > 
> > enable and disable can be controlled by (post the RPM, it finds
> > closest match - even a 1 will do)
> > 
> > echo '13000' > /sys/class/hwmon/hwmon0/fan1_target
> > and
> > echo '0' > /sys/class/hwmon/hwmon0/fan1_target
> > 
> > Test log: http://slexy.org/view/s2T0ajh46z
> > 
> > requires CONFIG_GPIO_PALMAS and CONFIG_SENSORS_GPIO_FAN to be operational
> > Applies on 
> > https://git.kernel.org/cgit/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v3.19/dt-v2
> > 
> >  arch/arm/boot/dts/am57xx-beagle-x15.dts |   14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
> > index 49edbda..4e55e94 100644
> > --- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
> > +++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
> > @@ -80,6 +80,14 @@
> >  			default-state = "off";
> >  		};
> >  	};
> > +
> > +	gpio_fan {
> > +		/* Based on 5v 500mA AFB02505HHB */
> > +		compatible = "gpio-fan";
> > +		gpios =  <&tps659038_gpio 1 GPIO_ACTIVE_HIGH>;
> > +		gpio-fan,speed-map = <0    0
> > +				      13000 1>;
> > +	};
> >  };
> >  
> >  &dra7_pmx_core {
> > @@ -314,6 +322,12 @@
> >  			wakeup-source;
> >  			ti,palmas-long-press-seconds = <12>;
> >  		};
> > +
> > +		tps659038_gpio: tps659038_gpio {
> > +			compatible = "ti,palmas-gpio";
> > +			gpio-controller;
> > +			#gpio-cells = <2>;
> > +		};
> >  	};
> >  
> >  	tmp102: tmp102@48 {
> > -- 
> > 1.7.9.5
> > 

-- 
Regards,
Nishanth Menon
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