Re: [PATCH v13 1/3] dt-bindings: Add keypad devicetree documentation

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Mon, Jun 01, 2020 at 10:25:47AM +0800, Fengping Yu wrote:
> From: "fengping.yu" <fengping.yu@xxxxxxxxxxxx>
> 
> Add Mediatek matrix keypad dt-bindings doc as yaml schema.
> 
> Signed-off-by: fengping.yu <fengping.yu@xxxxxxxxxxxx>
> Reviewed-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>

> Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

I didn't review this.

> ---
>  .../devicetree/bindings/input/mtk-kpd.yaml    | 95 +++++++++++++++++++
>  1 file changed, 95 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/mtk-kpd.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.yaml b/Documentation/devicetree/bindings/input/mtk-kpd.yaml
> new file mode 100644
> index 000000000000..586cd196dd00
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/mtk-kpd.yaml
> @@ -0,0 +1,95 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +version: 1
> +
> +$id: http://devicetree.org/schemas/input/mtk-keypad.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek's Keypad Controller device tree bindings
> +
> +maintainer:
> +  - Fengping Yu <fengping.yu@xxxxxxxxxxxx>
> +
> +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"
> +      - const: "mediatek,mt6873-keypad"
> +
> +  clock-names:
> +    description: Names of the clocks listed in clocks property in the same order
> +    maxItems: 1
> +
> +  clocks:
> +    description: Must contain one entry, for the module clock
> +    refs: devicetree/bindings/clocks/clock-bindings.txt for details.
> +
> +  interrupts:
> +    description: A single interrupt specifier
> +    maxItems: 1
> +
> +  linux,keymap:
> +    description: The keymap for keys as described in the binding document
> +    refs: devicetree/bindings/input/matrix-keymap.txt
> +    minItems: 1
> +    maxItems: 16
> +
> +  pinctrl-0:
> +    description: Specify pin control groups used for this controller
> +    refs: devicetree/bindings/pinctrl/pinctrl-bindings.txt
> +
> +  pinctrl-names:
> +    description: Names for optional pin modes
> +    maxItems: 1
> +
> +  reg:
> +    description: The base address of the Keypad register bank
> +    maxItems: 1
> +
> +  wakeup-source:
> +    description: use any event on keypad as wakeup event
> +    type: boolean
> +
> +  keypad,num-columns:
> +    description: 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
> +
> +  keypad,num-rows:
> +    description: 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
> +
> +  mediatek,debounce-us:
> +    description: Debounce interval in microseconds
> +    maximum: 256000
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - linux,keymap
> +  - pinctrl
> +  - clocks
> +  - clock-names
> +
> +examples:
> +  - |
> +
> +  keypad: kp@10010000 {
> +    compatible = "mediatek,mt6779-keypad";
> +    reg = <0 0x10010000 0 0x1000>;
> +    linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_VOLUMEDOWN) >;
> +    interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
> +    clocks = <&clk26m>;
> +    clock-names = "kpd";
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&kpd_gpios_def_cfg>;
> +  };
> -- 
> 2.18.0

-- 
With Best Regards,
Andy Shevchenko