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[v19,1/3] dt-bindings: input: Add bindings for Mediatek matrix keypad

Message ID 20220126153519.3637496-2-mkorpershoek@baylibre.com
State New
Headers show
Series Add matrix keypad driver support for Mediatek SoCs | expand

Commit Message

Mattijs Korpershoek Jan. 26, 2022, 3:35 p.m. UTC 
From: "fengping.yu" <fengping.yu@mediatek.com>

This patch add devicetree bindings for Mediatek matrix keypad driver.

Signed-off-by: fengping.yu <fengping.yu@mediatek.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
---
 .../input/mediatek,mt6779-keypad.yaml         | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
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Patch

diff --git a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
new file mode 100644
index 000000000000..2c76029224a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
@@ -0,0 +1,80 @@ 
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/mediatek,mt6779-keypad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek's Keypad Controller device tree bindings
+
+maintainers:
+  - Fengping Yu <fengping.yu@mediatek.com>
+
+allOf:
+  - $ref: "/schemas/input/matrix-keymap.yaml#"
+
+description: |
+  Mediatek's Keypad controller is used to interface a SoC with a matrix-type
+  keypad device. The keypad controller supports multiple row and column lines.
+  A key can be placed at each intersection of a unique row and a unique column.
+  The keypad controller can sense a key-press and key-release and report the
+  event using a interrupt to the cpu.
+
+properties:
+  compatible:
+    oneOf:
+      - const: mediatek,mt6779-keypad
+      - items:
+          - enum:
+            - mediatek,mt6873-keypad
+          - const: mediatek,mt6779-keypad
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    description: Names of the clocks listed in clocks property in the same order
+    items:
+       - const: kpd
+
+  wakeup-source:
+    description: use any event on keypad as wakeup event
+    type: boolean
+
+  mediatek,debounce-us:
+    description: |
+      Debounce interval in microseconds, if not specified, the default
+      value is 16000
+    maximum: 256000
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/input/input.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        kp@10010000 {
+          compatible = "mediatek,mt6779-keypad";
+          reg = <0 0x10010000 0 0x1000>;
+          interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
+          clocks = <&clk26m>;
+          clock-names = "kpd";
+        };
+    };