Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Thu, 23 Apr 2020 07:26:20 +0200
From:   Marco Felsch <m.felsch@pengutronix.de>
To:     Fengping yu <fengping.yu@mediatek.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Yingjoe Chen <yingjoe.chen@mediatek.com>,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        wsd_upstream@mediatek.com, linux-input@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 1/3] dt-bindings: add matrix keypad documentation
Message-ID: <20200423052619.5qi7n7q6ytmrchio@pengutronix.de>
References: <20200423011958.30521-1-fengping.yu@mediatek.com>
 <20200423011958.30521-2-fengping.yu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200423011958.30521-2-fengping.yu@mediatek.com>
User-Agent: NeoMutt/20170113 (1.7.2)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi Fengping,

On 20-04-23 09:19, Fengping yu wrote:
> From: "fengping.yu" <fengping.yu@mediatek.com>
> 
> Signed-off-by: fengping.yu <fengping.yu@mediatek.com>
> ---
>  .../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

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |