[v2,1/5] dt-bindings: touchscreen: convert bu21013 bindings to json schema
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Message ID 20250913092707.1005616-1-dario.binacchi@amarulasolutions.com
State New
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  • [v2,1/5] dt-bindings: touchscreen: convert bu21013 bindings to json schema
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Commit Message

Dario Binacchi Sept. 13, 2025, 9:26 a.m. UTC 
Convert Rohm BU21013 I2C touchscreen controller device tree binding to
json-schema.

Additional changes:
- Replace <supply_name>-supply with avdd-supply to match example and
  existing DTS.
- Add reset-gpios in the example because it is required.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v2:
- Added in v2

 .../bindings/input/touchscreen/bu21013.txt    | 43 ---------
 .../bindings/input/touchscreen/bu21013.yaml   | 96 +++++++++++++++++++
 2 files changed, 96 insertions(+), 43 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/bu21013.yaml

Patch
diff mbox series 

diff --git a/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt b/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
deleted file mode 100644
index da4c9d8b99b1..000000000000
--- a/Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
+++ /dev/null
@@ -1,43 +0,0 @@ 
-* Rohm BU21013 Touch Screen
-
-Required properties:
- - compatible              : "rohm,bu21013_tp"
- - reg                     : I2C device address
- - reset-gpios             : GPIO pin enabling (selecting) chip (CS)
- - interrupt-parent        : the phandle for the gpio controller
- - interrupts              : (gpio) interrupt to which the chip is connected
-
-Optional properties:
- - touch-gpios             : GPIO pin registering a touch event
- - <supply_name>-supply    : Phandle to a regulator supply
- - touchscreen-size-x      : General touchscreen binding, see [1].
- - touchscreen-size-y      : General touchscreen binding, see [1].
- - touchscreen-inverted-x  : General touchscreen binding, see [1].
- - touchscreen-inverted-y  : General touchscreen binding, see [1].
- - touchscreen-swapped-x-y : General touchscreen binding, see [1].
-
-[1] All general touchscreen properties are described in
-    Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt.
-
-Deprecated properties:
- - rohm,touch-max-x        : Maximum outward permitted limit in the X axis
- - rohm,touch-max-y        : Maximum outward permitted limit in the Y axis
- - rohm,flip-x             : Flip touch coordinates on the X axis
- - rohm,flip-y             : Flip touch coordinates on the Y axis
-
-Example:
-
-	i2c@80110000 {
-		bu21013_tp@5c {
-			compatible = "rohm,bu21013_tp";
-			reg = <0x5c>;
-			interrupt-parent = <&gpio2>;
-			interrupts <&20 IRQ_TYPE_LEVEL_LOW>;
-			touch-gpio = <&gpio2 20 GPIO_ACTIVE_LOW>;
-			avdd-supply = <&ab8500_ldo_aux1_reg>;
-
-			touchscreen-size-x = <384>;
-			touchscreen-size-y = <704>;
-			touchscreen-inverted-y;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/input/touchscreen/bu21013.yaml b/Documentation/devicetree/bindings/input/touchscreen/bu21013.yaml
new file mode 100644
index 000000000000..aeb581fcaf29
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/bu21013.yaml
@@ -0,0 +1,96 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/bu21013.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rohm BU21013 touchscreen
+
+description:
+  Rohm BU21013 I2C driven touchscreen controller.
+
+maintainers:
+  - Dario Binacchi <dario.binacchi@amarulasolutions.com>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - rohm,bu21013_tp
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+    description: GPIO resetting the chip
+
+  touch-gpios:
+    maxItems: 1
+    description: GPIO registering a touch event.
+
+  avdd-supply:
+    description: Phandle to the regulator supplying the analog circuit.
+
+  rohm,touch-max-x:
+    deprecated: true
+    description: Maximum value on the X axis.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  rohm,touch-max-y:
+    deprecated: true
+    description: Maximum value on the Y axis.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  rohm,flip-x:
+    deprecated: true
+    description: Flip touch coordinates on the X axis
+    type: boolean
+
+  rohm,flip-y:
+    deprecated: true
+    description: Flip touch coordinates on the Y axis
+    type: boolean
+
+  touchscreen-inverted-x: true
+  touchscreen-inverted-y: true
+  touchscreen-size-x: true
+  touchscreen-size-y: true
+  touchscreen-swapped-x-y: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@5c {
+            compatible = "rohm,bu21013_tp";
+            reg = <0x5c>;
+
+            interrupt-parent = <&gpio2>;
+            interrupts = <0x20 IRQ_TYPE_LEVEL_LOW>;
+            reset-gpios = <&gpio2 19 GPIO_ACTIVE_LOW>;
+            touch-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
+            avdd-supply = <&ab8500_ldo_aux1_reg>;
+
+            touchscreen-size-x = <384>;
+            touchscreen-size-y = <704>;
+            touchscreen-inverted-y;
+        };
+    };