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

From: Nishanth Menon
Date: Fri Dec 05 2014 - 12:49:27 EST


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>
---

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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