Add binding documentation for ILITEK touch devices. Signed-off-by: Joe Hung <joe_hung@xxxxxxxxxx> --- Changes in v4: - Change IRQ flag to level interrupt - Add support for common touchscreen-related properties - Modify reset gpio to active low - Modify irq type to LEVEL_LOW - Add compatible for Lego series ICs Changes in v3: - Add include header in examples, and pass the dt binding check Changes in v2: - Convert to DT schema format - Using interrupts instead of irq-gpios .../input/touchscreen/ilitek_ts_i2c.yaml | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml diff --git a/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml b/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml new file mode 100644 index 000000000000..7fe7ee8a8b20 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/ilitek_ts_i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ilitek I2C Touchscreen Controller + +maintainers: + - Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> + +allOf: + - $ref: touchscreen.yaml# + +properties: + compatible: + enum: + - ilitek,ili2130 + - ilitek,ili2131 + - ilitek,ili2132 + - ilitek,ili2316 + - ilitek,ili2322 + - ilitek,ili2323 + - ilitek,ili2326 + - ilitek,ili2520 + - ilitek,ili2521 + reg: + const: 0x41 + interrupts: + maxItems: 1 + reset-gpios: + maxItems: 1 + + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-inverted-x: true + touchscreen-inverted-y: true + touchscreen-swapped-x-y: true + + wakeup-source: + type: boolean + description: touchscreen can be used as a wakeup source. + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - reset-gpios + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/gpio/gpio.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + touchscreen@41 { + compatible = "ilitek,ili2520"; + reg = <0x41>; + interrupt-parent = <&gpio1>; + interrupts = <7 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>; + + touchscreen-inverted-y; + }; + }; -- 2.25.1
