Re: [PATCH V2] ARM: dts: am57xx-beagle-x15: Add GPIO controlled fan node
From: Tony Lindgren
Date: Wed Jan 07 2015 - 18:48:32 EST
* Nishanth Menon <nm@xxxxxx> [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@xxxxxx>
Applying into omap-for-v3.20/dt thanks.
Tony
> ---
>
> 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
>
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