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Subject[PATCH 1/5] dt-bindings: input: Add the PinePhone keyboard binding
Date
Add devicetree support for the PinePhone keyboard case, which provides a
matrix keyboard interface and a proxied I2C bus.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---

.../input/pine64,pinephone-keyboard.yaml | 90 +++++++++++++++++++
1 file changed, 90 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/pine64,pinephone-keyboard.yaml

diff --git a/Documentation/devicetree/bindings/input/pine64,pinephone-keyboard.yaml b/Documentation/devicetree/bindings/input/pine64,pinephone-keyboard.yaml
new file mode 100644
index 000000000000..00f084b263f0
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/pine64,pinephone-keyboard.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/pine64,pinephone-keyboard.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Pine64 PinePhone keyboard device tree bindings
+
+maintainers:
+ - Samuel Holland <samuel@sholland.org>
+
+description:
+ A keyboard accessory is available for the Pine64 PinePhone and PinePhone Pro.
+ It connects via I2C, providing a raw scan matrix, a flashing interface, and a
+ subordinate I2C bus for communication with a battery charger IC.
+
+allOf:
+ - $ref: /schemas/input/matrix-keymap.yaml#
+
+properties:
+ compatible:
+ const: pine64,pinephone-keyboard
+
+ reg:
+ const: 0x15
+
+ interrupts:
+ maxItems: 1
+
+ linux,fn-keymap:
+ $ref: /schemas/input/matrix-keymap.yaml#/properties/linux,keymap
+ description: keymap used when the Fn key is pressed
+
+ wakeup-source: true
+
+ i2c-bus:
+ $ref: /schemas/i2c/i2c-controller.yaml#
+
+dependencies:
+ linux,fn-keymap: [ 'keypad,num-columns', 'keypad,num-rows' ]
+ linux,keymap: [ 'keypad,num-columns', 'keypad,num-rows' ]
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/input/input.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ keyboard@15 {
+ compatible = "pine64,pinephone-keyboard";
+ reg = <0x15>;
+ interrupt-parent = <&r_pio>;
+ interrupts = <0 12 IRQ_TYPE_EDGE_FALLING>; /* PL12 */
+ keypad,num-rows = <6>;
+ keypad,num-columns = <12>;
+ linux,fn-keymap = <MATRIX_KEY(0, 0, KEY_FN_ESC)
+ MATRIX_KEY(0, 1, KEY_F1)
+ MATRIX_KEY(0, 2, KEY_F2)
+ /* ... */
+ MATRIX_KEY(5, 2, KEY_FN)
+ MATRIX_KEY(5, 3, KEY_LEFTALT)
+ MATRIX_KEY(5, 5, KEY_RIGHTALT)>;
+ linux,keymap = <MATRIX_KEY(0, 0, KEY_ESC)
+ MATRIX_KEY(0, 1, KEY_1)
+ MATRIX_KEY(0, 2, KEY_2)
+ /* ... */
+ MATRIX_KEY(5, 2, KEY_FN)
+ MATRIX_KEY(5, 3, KEY_LEFTALT)
+ MATRIX_KEY(5, 5, KEY_RIGHTALT)>;
+
+ i2c-bus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ charger@75 {
+ reg = <0x75>;
+ };
+ };
+ };
+ };
--
2.33.1
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