linux-kernel - Re: [PATCH v2 2/8] arm64: dts: qcom: apq8016-sbc: add usb support

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Message-ID: <20160222055124.GG21240@tuxbot>
Date:	Sun, 21 Feb 2016 21:51:24 -0800
From:	Bjorn Andersson <bjorn.andersson@...aro.org>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Andy Gross <andy.gross@...aro.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 2/8] arm64: dts: qcom: apq8016-sbc: add usb support

On Wed 10 Feb 03:36 PST 2016, Srinivas Kandagatla wrote:

> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/apq8016-sbc-soc-pins.dtsi | 15 ++++++++++
>  arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi          | 35 ++++++++++++++++++++++
>  2 files changed, 50 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc-soc-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc-soc-pins.dtsi
> index cbeee0b..4a79dd9 100644
> --- a/arch/arm64/boot/dts/qcom/apq8016-sbc-soc-pins.dtsi
> +++ b/arch/arm64/boot/dts/qcom/apq8016-sbc-soc-pins.dtsi
> @@ -10,4 +10,19 @@
>  			output-low;
>  		};
>  	};
> +
> +	usb_id_default: usb_id_default {

Labels are built with _, node names with -.

> +		pinmux {
> +			function = "gpio";
> +			pins = "gpio121";
> +		};

You don't need a separate node to specify function...

> +
> +		pinconf {
> +			pins = "gpio121";
> +			function = "gpio";

...but if you really want it, then you shouldn't specify the function
here.

> +			drive-strength = <8>;
> +			input-enable;
> +			bias-pull-up;
> +		};
> +	};
>  };
> diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
[..]
> +
> +	usb_id: usb-id {
> +		interrupt-parent = <&msmgpio>;

interrupt-parent is part of specifying an interrupt. You're not doing
that here, so no need to specify a parent.

> +		compatible = "linux,extcon-usb-gpio";
> +		id-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usb_id_default>;
>  	};
>  };

Apart from these two nits

Acked-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn