2024-04-17 07:42:25

by Allen_Lin

Subject: [PATCH v4 1/4] dt-bindings: input: Add Himax HX83102J touchscreen

Add the HX83102j touchscreen device tree bindings documents.
HX83102j is a Himax TDDI touchscreen controller.
It's power sequence should be bound with a lcm driver, thus it
needs to be a panel follower. Others are the same as normal SPI
touchscreen controller.

Reviewed-by: Rob Herring <[email protected]>

Signed-off-by: Allen_Lin <[email protected]>
---
.../input/touchscreen/himax,hx83102j.yaml | 93 +++++++++++++++++++
MAINTAINERS | 6 ++
2 files changed, 99 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml b/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
new file mode 100644
index 000000000000..d16fba2ef5f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/himax,hx83102j.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Himax hx83102j touchscreen
+
+maintainers:
+ - Allen Lin <[email protected]>
+
+description:
+ This Himax hx83102j touchscreen uses the spi protocol.
+
+allOf:
+ - $ref: /schemas/input/touchscreen/touchscreen.yaml#
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ const: himax,hx83102j
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+ vccd-supply:
+ description: A phandle for the regulator supplying IO power.
+
+ vsn-supply:
+ description: Negative supply regulator.
+
+ vsp-supply:
+ description: Positive supply regulator.
+
+ ddreset-gpios:
+ description: A phandle of gpio for display reset controlled by the LCD driver.
+ This is the master reset, if this reset is triggered, the TP reset will
+ also be triggered.
+
+ spi-cpha: true
+
+ spi-cpol: true
+
+ spi-max-frequency: true
+
+ panel: true
+
+ firmware-name:
+ description: Specify the file name for firmware loading.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - reset-gpios
+ - panel
+ - vccd-supply
+ - vsn-supply
+ - vsp-supply
+ - ddreset-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ap_ts: touchscreen@0 {
+ compatible = "himax,hx83102j";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&touch_int0 &touch_reset>;
+ reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+ spi-cpha;
+ spi-cpol;
+ interrupt-parent = <&gpio1>;
+ interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+ panel = <&panel>;
+ vccd-supply = <&regulator>;
+ vsn-supply = <&regulator>;
+ vsp-supply = <&regulator>;
+ ddreset-gpios = <&gpio1>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 43b39956694a..bb7b363cb2ed 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9669,6 +9669,12 @@ L: [email protected]
S: Maintained
F: drivers/misc/hisi_hikey_usb.c

+HIMAX HID TOUCHSCREEN
+M: Allen Lin <[email protected]>
+L: [email protected]
+S: Maintained
+F: Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
+
HIMAX HX83112B TOUCHSCREEN SUPPORT
M: Job Noorman <[email protected]>
L: [email protected]
--
2.34.1