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authorHans de Goede <hdegoede@redhat.com>2014-05-14 11:22:09 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-05-14 16:40:06 -0700
commitf09f98d3240b7ed2dd84ef6d84ff86df9d61e0f5 (patch)
tree868ecf353dd23426271b88dc39a16c29f1d4d2a2 /Documentation/devicetree/bindings/input
parent6decea7c5438e2955f64e2513ec9a2fac7602a7d (diff)
Input: sun4i-ts - add support for temperature sensor
The sun4i resisitive touchscreen controller also comes with a built-in temperature sensor. This commit adds support for it. This commit also introduces a new "ts-attached" device-tree property, when this is not set, the input part of the driver won't register. This way the internal temperature sensor can be used to measure the SoC temperature independent of there actually being a touchscreen attached to the controller. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
-rw-r--r--Documentation/devicetree/bindings/input/touchscreen/sun4i.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt
index 881aea713fc3..aef57791f40b 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt
@@ -6,10 +6,15 @@ Required properties:
- reg: mmio address range of the chip
- interrupts: interrupt to which the chip is connected
+Optional properties:
+ - allwinner,ts-attached: boolean indicating that an actual touchscreen is
+ attached to the controller
+
Example:
rtp: rtp@01c25000 {
compatible = "allwinner,sun4i-a10-ts";
reg = <0x01c25000 0x100>;
interrupts = <29>;
+ allwinner,ts-attached;
};

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