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| author | Langyan Ye <yelangyan@huaqin.corp-partner.google.com> | 2026-01-08 09:35:23 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2026-02-26 19:02:35 +0300 |
| commit | b0ef098d5fc1d2f75f4fcc6ca7ad41f29210c4d0 (patch) | |
| tree | 6b5f5d44fc459bba4136cf48745d9e366d76f5d1 | |
| parent | 21a60fcd24bae2ecdb96351463618647e1edf871 (diff) | |
| download | linux-b0ef098d5fc1d2f75f4fcc6ca7ad41f29210c4d0.tar.xz | |
dt-bindings: input: Add Parade TC3408 touchscreen controller
The tc3408 touch screen chip same as Elan eKTH6915 controller
has a reset gpio. The difference is that they have different
post_power_delay_ms.
Signed-off-by: Langyan Ye <yelangyan@huaqin.corp-partner.google.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260108063524.742464-2-yelangyan@huaqin.corp-partner.google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | Documentation/devicetree/bindings/input/parade,tc3408.yaml | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/parade,tc3408.yaml b/Documentation/devicetree/bindings/input/parade,tc3408.yaml new file mode 100644 index 000000000000..30ffefb96c68 --- /dev/null +++ b/Documentation/devicetree/bindings/input/parade,tc3408.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/parade,tc3408.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Parade TC3408 touchscreen controller + +maintainers: + - Langyan Ye <yelangyan@huaqin.corp-partner.google.com> + +description: | + Parade TC3408 is a touchscreen controller supporting the I2C-HID protocol. + It requires a reset GPIO and two power supplies (3.3V and 1.8V). + +allOf: + - $ref: /schemas/input/touchscreen/touchscreen.yaml# + +properties: + compatible: + const: parade,tc3408 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + vcc33-supply: + description: The 3.3V supply to the touchscreen. + + vccio-supply: + description: The 1.8V supply to the touchscreen. + +required: + - compatible + - reg + - interrupts + - reset-gpios + - vcc33-supply + - vccio-supply + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen: touchscreen@24 { + compatible = "parade,tc3408"; + reg = <0x24>; + + interrupt-parent = <&pio>; + interrupts = <15 IRQ_TYPE_LEVEL_LOW>; + + reset-gpios = <&pio 126 GPIO_ACTIVE_LOW>; + vcc33-supply = <&pp3300_tchscr_x>; + vccio-supply = <&pp1800_tchscr_report_disable>; + }; + }; |