From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Subject: Re: [PATCH v3 2/3] dt-bindings: i2c: designware: add optional
 pinctrl for bus recovery
Date: Mon, 17 Sep 2018 11:33:25 +0800
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        <20180917112830.2a3c9be9@xhacker.debian>
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To: Jarkko Nikula <jarkko.nikula@linux.intel.com>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Mika Westerberg <mika.westerberg@linux.intel.com>, Wolfram Sang <wsa@the-dreams.de>, Mark Rutland <mark.rutland@arm.com>, Rob Herring <robh+dt@kernel.org>
Cc: linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
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+ DT maintainers

On Mon, 17 Sep 2018 11:28:30 +0800
Jisheng Zhang <Jisheng.Zhang@synaptics.com> wrote:

> Document the pinctrl property for bus recovery.
> 
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
> ---
>  Documentation/devicetree/bindings/i2c/i2c-designware.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> index 1d6a6a8061ba..c1544d1f7b55 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
> @@ -24,6 +24,9 @@ Optional properties :
>  
>   - sda-gpios: specify the gpio of the SDA line for gpio recovery
>  
> + - pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c
> +   bus recovery, call it "gpio" state
> +
>  Examples :
>  
>  	i2c@f0000 {
> @@ -46,6 +49,9 @@ Examples :
>  		i2c-sda-hold-time-ns = <300>;
>  		i2c-sda-falling-time-ns = <300>;
>  		i2c-scl-falling-time-ns = <300>;
> +		pinctrl-names = "default", "gpio";
> +		pinctrl-0 = <&pinctrl_i2c1>;
> +		pinctrl-1 = <&pinctrl_i2c1_gpio>;
>  		scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
>  		sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
>  	};