Subject: [PATCH 1/3] ARM: imx6qdl-sabreauto.dtsi: add max7310 support

From: [email-masked] (Shawn Guo)
Date: Wed, 11 Mar 2015 09:46:09 +0800

On Mon, Mar 09, 2015 at 05:28:06PM +0800, Peter Chen wrote:
> max7310 is an i2c interface gpio expander
> 
> Signed-off-by: Peter Chen <[email-masked]>
> ---
>  arch/arm/boot/dts/imx6qdl-sabreauto.dtsi | 43 ++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
> index 009abd6..51acfec 100644
> --- a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
> @@ -28,6 +28,13 @@
>  		};
>  	};
>  
> +	max7310_reset: max7310-reset {
> +		compatible = "gpio-reset";

The mainline kernel doesn't seem to have a gpio-reset driver/binding
yet.

Shawn

> +		reset-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
> +		reset-delay-us = <1>;
> +		#reset-cells = <0>;
> +	};
> +
>  	sound-spdif {
>  		compatible = "fsl,imx-audio-spdif",
>  			   "fsl,imx-sabreauto-spdif";
> @@ -182,6 +189,35 @@
>  	};
>  };
>  
> +&i2c3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_i2c3>;
> +	pinctrl-assert-gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
> +	status = "okay";
> +
> +	max7310_a: gpio at 30 {
> +		compatible = "maxim,max7310";
> +		reg = <0x30>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +		resets = <&max7310_reset>;
> +	};
> +
> +	max7310_b: gpio at 32 {
> +		compatible = "maxim,max7310";
> +		reg = <0x32>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +	};
> +
> +	max7310_c: gpio at 34 {
> +		compatible = "maxim,max7310";
> +		reg = <0x34>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +	};
> +};
> +
>  &iomuxc {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_hog>;
> @@ -265,6 +301,13 @@
>  			>;
>  		};
>  
> +		pinctrl_i2c3: i2c3grp {
> +			fsl,pins = <
> +				MX6QDL_PAD_GPIO_3__I2C3_SCL  0x4001b8b1
> +				MX6QDL_PAD_EIM_D18__I2C3_SDA 0x4001b8b1
> +			>;
> +		};
> +
>  		pinctrl_pwm3: pwm1grp {
>  			fsl,pins = <
>  				MX6QDL_PAD_SD4_DAT1__PWM3_OUT		0x1b0b1
> -- 
> 1.9.1
>