Hi Fengping,
On 20-04-23 09:19, Fengping yu wrote:
> From: "fengping.yu" <fengping.yu@xxxxxxxxxxxx>
>
> Signed-off-by: fengping.yu <fengping.yu@xxxxxxxxxxxx>
> ---
> .../devicetree/bindings/input/mtk-kpd.txt | 61 +++++++++++++++++++
Pls don't add new binding docs as .txt instead you should use the new
yaml schema.
Regards,
Marco
> 1 file changed, 61 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/mtk-kpd.txt
>
> diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.txt b/Documentation/devicetree/bindings/input/mtk-kpd.txt
> new file mode 100644
> index 000000000000..8b154a5e2f7d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/mtk-kpd.txt
> @@ -0,0 +1,61 @@
> +* Mediatek's Keypad Controller device tree binding
> +
> +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.
> +
> +Required properties:
> +- compatible should contain:
> + * "mediatek,kp" for common keypad
> + * "mediatek,mt6779-keypad" for specific keypad chip
> +
> +- reg: The base address of the Keypad register bank.
> +
> +- interrupts: A single interrupt specifier.
> +
> +- mediatek,debounce-us: Debounce interval in microseconds, maximum value
> + is 256000 microseconds.
> +
> +- keypad,num-rows: Number of row lines connected to the keypad controller, it is
> + not equal to PCB rows number, instead you should add required value for each IC.
> +
> +- keypad,num-columns: Number of column lines connected to the keypad controller,
> + it is not equal to PCB columns number, instead you should add required value
> + for each IC.
> +
> +- linux,keymap: The keymap for keys as described in the binding document
> + devicetree/bindings/input/matrix-keymap.txt.
> +
> +- pinctrl: Should specify pin control groups used for this controller.
> + See ../pinctrl/pinctrl-bindings.txt for details.
> +
> +- clocks: Must contain one entry, for the module clock.
> + See ../clocks/clock-bindings.txt for details.
> +
> +- clock-names: Names of the clocks listed in clocks property in the same order.
> +
> +Optional Properties:
> +- wakeup-source: use any event on keypad as wakeup event.
> +
> +Example:
> +
> + keypad: kp@10010000 {
> + compatible = "mediatek,kp";
> + reg = <0 0x10010000 0 0x1000>;
> + wakeup-source;
> + interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
> + clocks = <&clk26m>;
> + clock-names = "kpd";
> + };
> +
> + &keypad {
> + mediatek,debounce-us = <32000>;
> + keypad,num-rows = <8>;
> + keypad,num-columns = <9>;
> + linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_VOLUMEDOWN) >;
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&kpd_gpios_def_cfg>;
> + };
> --
> 2.18.0
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