This adds device tree bindings for the Cypress CY8CTMA140 touchscreen. Cc: devicetree@xxxxxxxxxxxxxxx Cc: Henrik Rydberg <rydberg@xxxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- ChangeLog v4->v5: - Fix the unit name in the I2C controller after the building bot complained that it cannot be at @00000000 and that it does not contain a reg. Just call it "i2c". ChangeLog v1->v4: - Drop the description of 'reg', it's surplus. - Set the I2C frequency to the span 100k to 400k instead of hardcoding 400k. - Collect Rob's review tag. --- .../input/touchscreen/cypress,cy8ctma140.yaml | 72 +++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma140.yaml diff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma140.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma140.yaml new file mode 100644 index 000000000000..8c73e5264312 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma140.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/cypress,cy8ctma140.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Cypress CY8CTMA140 series touchscreen controller bindings + +maintainers: + - Linus Walleij <linus.walleij@xxxxxxxxxx> + +allOf: + - $ref: touchscreen.yaml# + +properties: + compatible: + const: cypress,cy8ctma140 + + reg: + const: 0x20 + + clock-frequency: + description: I2C client clock frequency, defined for host + minimum: 100000 + maximum: 400000 + + interrupts: + maxItems: 1 + + vcpin-supply: + description: Analog power supply regulator on VCPIN pin + + vdd-supply: + description: Digital power supply regulator on VDD pin + + touchscreen-inverted-x: true + touchscreen-inverted-y: true + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-swapped-x-y: true + touchscreen-max-pressure: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - touchscreen-size-x + - touchscreen-size-y + - touchscreen-max-pressure + +examples: +- | + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + touchscreen@20 { + compatible = "cypress,cy8ctma140"; + reg = <0x20>; + touchscreen-size-x = <480>; + touchscreen-size-y = <800>; + touchscreen-max-pressure = <255>; + interrupt-parent = <&gpio6>; + interrupts = <26 IRQ_TYPE_EDGE_FALLING>; + vdd-supply = <&ab8500_ldo_aux2_reg>; + vcpin-supply = <&ab8500_ldo_aux2_reg>; + }; + }; + +... -- 2.21.1
