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| author | Michael Srba <Michael.Srba@seznam.cz> | 2020-10-05 00:37:18 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-10-05 02:08:08 +0300 |
| commit | 8f445ffa851e999308bbd4d133ea849936f95179 (patch) | |
| tree | 52b4d56da56d44e8d2a8076d4978ad034e882edb /Documentation/devicetree/bindings/input | |
| parent | 2c2b364fddd551f0da98953618e264c098dfa140 (diff) | |
| download | linux-8f445ffa851e999308bbd4d133ea849936f95179.tar.xz | |
dt-bindings: input/touchscreen: add bindings for zinitix
This patch adds dts bindings for the zinitix bt541 touchscreen.
Signed-off-by: Michael Srba <Michael.Srba@seznam.cz>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201001122949.16846-2-michael.srba@seznam.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/zinitix.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt b/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt new file mode 100644 index 000000000000..446efb9f5f55 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt @@ -0,0 +1,40 @@ +Device tree bindings for Zinitx BT541 touchscreen controller + +Required properties: + + - compatible : Should be "zinitix,bt541" + - reg : I2C address of the chip. Should be 0x20 + - interrupts : Interrupt to which the chip is connected + +Optional properties: + + - vdd-supply : Analog power supply regulator on VCCA pin + - vddo-supply : Digital power supply regulator on VDD pin + - zinitix,mode : Mode of reporting touch points. Some modes may not work + with a particular ts firmware for unknown reasons. Available + modes are 1 and 2. Mode 2 is the default and preferred. + +The touchscreen-* properties are documented in touchscreen.txt in this +directory. + +Example: + + i2c@00000000 { + /* ... */ + + bt541@20 { + compatible = "zinitix,bt541"; + reg = <0x20>; + interrupt-parent = <&msmgpio>; + interrupts = <13 IRQ_TYPE_EDGE_FALLING>; + pinctrl-names = "default"; + pinctrl-0 = <&tsp_default>; + vdd-supply = <®_vdd_tsp>; + vddo-supply = <&pm8916_l6>; + touchscreen-size-x = <540>; + touchscreen-size-y = <960>; + zinitix,mode = <2>; + }; + + /* ... */ + }; |