Re: [PATCH V4] ARM: dts: am57xx-beagle-x15: Add GPIO controlled fan node

[Felipe Balbi <balbi@ti.com>]

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On Mon, Jan 05, 2015 at 10:32:29AM -0600, Nishanth Menon wrote:
> 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@ti.com>

have already reviewed this one previously:

Reviewed-by: Felipe Balbi <balbi@ti.com>

> ---
> V4: Change format of the speed-map used.
> V3: https://patchwork.kernel.org/patch/5562121/
> V2: https://patchwork.kernel.org/patch/5445111/
> V1: https://patchwork.kernel.org/patch/5444911/
> 
> 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 v3.19-rc1
> 
>  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 6c2e8e4..c5d4cea 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: 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 {
> @@ -394,6 +402,12 @@
>  			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
> 
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-- 
balbi

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