linux-kernel - Re: [PATCH v2 17/18] arm: dts: owl-s500-roseapplepi: Add I2C pinctrl configuration

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Date:   Sat, 28 Nov 2020 13:11:08 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Cristian Ciocaltea <cristian.ciocaltea@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Andreas Färber <afaerber@...e.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 17/18] arm: dts: owl-s500-roseapplepi: Add I2C pinctrl
 configuration

On Fri, Nov 20, 2020 at 01:56:11AM +0200, Cristian Ciocaltea wrote:
> Add pinctrl definitions for the I2C controllers used in RoseapplePi SBC.
> For the moment enable only I2C0, which is used by the ATC2603C PMIC.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...il.com>

Earlier we used to add "_default" suffix for the pin groups to
differentiate between active and sleep states. But I guess we can just
keep the suffix away until we hit usecase.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Thanks,
Mani

> ---
>  arch/arm/boot/dts/owl-s500-roseapplepi.dts | 44 ++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/owl-s500-roseapplepi.dts b/arch/arm/boot/dts/owl-s500-roseapplepi.dts
> index fe9ae3619422..ff91561ca99c 100644
> --- a/arch/arm/boot/dts/owl-s500-roseapplepi.dts
> +++ b/arch/arm/boot/dts/owl-s500-roseapplepi.dts
> @@ -37,7 +37,51 @@ sd_vcc: sd-vcc {
>  	};
>  };
>  
> +&i2c0 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c0_pins>;
> +};
> +
> +&i2c1 {
> +	status = "disabled";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c1_pins>;
> +};
> +
> +&i2c2 {
> +	status = "disabled";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c2_pins>;
> +};
> +
>  &pinctrl {
> +	i2c0_pins: i2c0-pins {
> +		pinmux {
> +			groups = "i2c0_mfp";
> +			function = "i2c0";
> +		};
> +
> +		pinconf {
> +			pins = "i2c0_sclk", "i2c0_sdata";
> +			bias-pull-up;
> +		};
> +	};
> +
> +	i2c1_pins: i2c1-pins {
> +		pinconf {
> +			pins = "i2c1_sclk", "i2c1_sdata";
> +			bias-pull-up;
> +		};
> +	};
> +
> +	i2c2_pins: i2c2-pins {
> +		pinconf {
> +			pins = "i2c2_sclk", "i2c2_sdata";
> +			bias-pull-up;
> +		};
> +	};
> +
>  	mmc0_pins: mmc0-pins {
>  		pinmux {
>  			groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
> -- 
> 2.29.2
>