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authorDouglas Anderson <dianders@chromium.org>2021-01-15 20:06:39 +0300
committerBenjamin Tissoires <benjamin.tissoires@redhat.com>2021-01-18 18:56:22 +0300
commitf9a056e002a2eaab1b3e86f9855047a06c89ec14 (patch)
tree443bb703edf6fa1bc2f1c1f5bd5ca28a93f218a2
parent1fe16cfd311b19769d7a6d28304fef5618b49a0c (diff)
downloadlinux-f9a056e002a2eaab1b3e86f9855047a06c89ec14.tar.xz
dt-bindings: input: HID: i2c-hid: Introduce bindings for the Goodix GT7375P
This adds new bindings for the Goodix GT7375P touchscreen. While this touchscreen's communications are based on the generic "i2c-over-hid" protocol, it needs special power sequencing and thus gets its own compatible and bindings. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
-rw-r--r--Documentation/devicetree/bindings/input/goodix,gt7375p.yaml65
1 files changed, 65 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
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+++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/goodix,gt7375p.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Goodix GT7375P touchscreen
+
+maintainers:
+ - Douglas Anderson <dianders@chromium.org>
+
+description:
+ Supports the Goodix GT7375P touchscreen.
+ This touchscreen uses the i2c-hid protocol but has some non-standard
+ power sequencing required.
+
+properties:
+ compatible:
+ items:
+ - const: goodix,gt7375p
+
+ reg:
+ enum:
+ - 0x5d
+ - 0x14
+
+ interrupts:
+ maxItems: 1
+
+ reset-gpios:
+ true
+
+ vdd-supply:
+ description: The 3.3V supply to the touchscreen.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - reset-gpios
+ - vdd-supply
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,rpmh.h>
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ap_ts: touchscreen@5d {
+ compatible = "goodix,gt7375p";
+ reg = <0x5d>;
+
+ interrupt-parent = <&tlmm>;
+ interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
+
+ reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
+ vdd-supply = <&pp3300_ts>;
+ };
+ };