diff options
| author | Jaechul Lee <jcsing.lee@samsung.com> | 2017-01-18 14:35:42 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-01-18 14:50:23 -0800 |
| commit | 72d1f2346ded5b1743d7938f4522550b4da9c82d (patch) | |
| tree | 8dd8b8ed91df9dda4783166472f192d9416351ec /Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt | |
| parent | aa6f9222218273cc54ec8d3c91ad8207eef21f99 (diff) | |
Input: tm2-touchkey - add touchkey driver support for TM2
This patch adds support for the TM2 touch key and led functionality.
The driver interfaces with userspace through an input device and reports
KEY_PHONE and KEY_BACK event types. LED brightness can be controlled by
"/sys/class/leds/tm2-touchkey/brightness".
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jaechul Lee <jcsing.lee@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt b/Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt new file mode 100644 index 000000000000..635f62c756ee --- /dev/null +++ b/Documentation/devicetree/bindings/input/cypress,tm2-touchkey.txt @@ -0,0 +1,27 @@ +Samsung tm2-touchkey + +Required properties: +- compatible: must be "cypress,tm2-touchkey" +- reg: I2C address of the chip. +- interrupt-parent: a phandle for the interrupt controller (see interrupt + binding[0]). +- interrupts: interrupt to which the chip is connected (see interrupt + binding[0]). +- vcc-supply : internal regulator output. 1.8V +- vdd-supply : power supply for IC 3.3V + +[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + +Example: + &i2c0 { + /* ... */ + + touchkey@20 { + compatible = "cypress,tm2-touchkey"; + reg = <0x20>; + interrupt-parent = <&gpa3>; + interrupts = <2 IRQ_TYPE_EDGE_FALLING>; + vcc-supply=<&ldo32_reg>; + vdd-supply=<&ldo33_reg>; + }; + }; |