[PATCH v2 1/1] dt-bindings: input: convert lpc32xx-key.txt to yaml format
Frank Li
Frank.Li at nxp.com
Mon Jun 30 09:32:31 PDT 2025
Convert lpc32xx-key.txt to yaml format.
Additional changes:
- set maximum of key-row(column) to 4.
- add ref to matrix-keymap.yaml.
Reviewed-by: Vladimir Zapolskiy <vz at mleia.com>
Signed-off-by: Frank Li <Frank.Li at nxp.com>
---
change in v2
- add ref to matrix-keymap.yaml.
- remove properties, which already defined in matrix-keymap.yaml.
- Add Vladimir Zapolskiy review tag
---
.../devicetree/bindings/input/lpc32xx-key.txt | 34 -----------
.../bindings/input/nxp,lpc3220-key.yaml | 61 +++++++++++++++++++
2 files changed, 61 insertions(+), 34 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/lpc32xx-key.txt
create mode 100644 Documentation/devicetree/bindings/input/nxp,lpc3220-key.yaml
diff --git a/Documentation/devicetree/bindings/input/lpc32xx-key.txt b/Documentation/devicetree/bindings/input/lpc32xx-key.txt
deleted file mode 100644
index 2b075a080d303..0000000000000
--- a/Documentation/devicetree/bindings/input/lpc32xx-key.txt
+++ /dev/null
@@ -1,34 +0,0 @@
-NXP LPC32xx Key Scan Interface
-
-This binding is based on the matrix-keymap binding with the following
-changes:
-
-Required Properties:
-- compatible: Should be "nxp,lpc3220-key"
-- reg: Physical base address of the controller and length of memory mapped
- region.
-- interrupts: The interrupt number to the cpu.
-- clocks: phandle to clock controller plus clock-specifier pair
-- nxp,debounce-delay-ms: Debounce delay in ms
-- nxp,scan-delay-ms: Repeated scan period in ms
-- linux,keymap: the key-code to be reported when the key is pressed
- and released, see also
- Documentation/devicetree/bindings/input/matrix-keymap.txt
-
-Note: keypad,num-rows and keypad,num-columns are required, and must be equal
-since LPC32xx only supports square matrices
-
-Example:
-
- key at 40050000 {
- compatible = "nxp,lpc3220-key";
- reg = <0x40050000 0x1000>;
- clocks = <&clk LPC32XX_CLK_KEY>;
- interrupt-parent = <&sic1>;
- interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
- keypad,num-rows = <1>;
- keypad,num-columns = <1>;
- nxp,debounce-delay-ms = <3>;
- nxp,scan-delay-ms = <34>;
- linux,keymap = <0x00000002>;
- };
diff --git a/Documentation/devicetree/bindings/input/nxp,lpc3220-key.yaml b/Documentation/devicetree/bindings/input/nxp,lpc3220-key.yaml
new file mode 100644
index 0000000000000..9e0d977bdf5cd
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/nxp,lpc3220-key.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/nxp,lpc3220-key.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC32xx Key Scan Interface
+
+maintainers:
+ - Frank Li <Frank.Li at nxp.com>
+
+properties:
+ compatible:
+ const: nxp,lpc3220-key
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ nxp,debounce-delay-ms:
+ description: Debounce delay in ms
+
+ nxp,scan-delay-ms:
+ description: Repeated scan period in ms
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - nxp,debounce-delay-ms
+ - nxp,scan-delay-ms
+ - linux,keymap
+
+allOf:
+ - $ref: matrix-keymap.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/clock/lpc32xx-clock.h>
+
+ key at 40050000 {
+ compatible = "nxp,lpc3220-key";
+ reg = <0x40050000 0x1000>;
+ clocks = <&clk LPC32XX_CLK_KEY>;
+ interrupt-parent = <&sic1>;
+ interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
+ keypad,num-rows = <1>;
+ keypad,num-columns = <1>;
+ nxp,debounce-delay-ms = <3>;
+ nxp,scan-delay-ms = <34>;
+ linux,keymap = <0x00000002>;
+ };
--
2.34.1
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