linux-kernel - Re: [PATCH/RFT v2 17/17] ARM: dts: da850: add usb device node

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Message-ID: <59ca6a1f-6db9-eed2-8e8a-77657c7febac@lechnology.com>
Date:   Mon, 24 Oct 2016 19:48:08 -0500
From:   David Lechner <david@...hnology.com>
To:     ahaslam@...libre.com, gregkh@...uxfoundation.org, johan@...nel.org,
        robh+dt@...nel.org, nsekhar@...com, stern@...land.harvard.edu,
        khilman@...libre.com, sshtylyov@...mvista.com,
        manjunath.goudar@...aro.org, broonie@...nel.org,
        abailon@...libre.com
Cc:     linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH/RFT v2 17/17] ARM: dts: da850: add usb device node

On 10/24/2016 11:46 AM, ahaslam@...libre.com wrote:
> From: Axel Haslam <ahaslam@...libre.com>
>
> This adds the usb (ohci) device node for the da850 soc.
> Also it enables it for the lcdk board
>
> Signed-off-by: Axel Haslam <ahaslam@...libre.com>
> ---
>  arch/arm/boot/dts/da850-lcdk.dts | 8 ++++++++
>  arch/arm/boot/dts/da850.dtsi     | 8 ++++++++
>  2 files changed, 16 insertions(+)
>
> diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
> index 7b8ab21..fa91339 100644
> --- a/arch/arm/boot/dts/da850-lcdk.dts
> +++ b/arch/arm/boot/dts/da850-lcdk.dts
> @@ -86,6 +86,14 @@
>  	};
>  };
>
> +&usb_phy {
> +	status = "okay";
> +};
> +
> +&usb {
> +	status = "okay";

Don't you need to specify a regulator here using the vbus-supply property?

> +};
> +
>  &serial2 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&serial2_rxtx_pins>;
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index 33fcdce..ec2cec3 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -381,6 +381,14 @@
>  			#phy-cells = <1>;
>  			status = "disabled";
>  		};
> +		usb: usb@...5000 {

Don't need the leading 0 on usb@...000

The alias (usb:) might need to be more specific since there is a second 
usb device that will be added later for musb. (The comments in the 
previous review only referred to the "usb" in "usb@", not the alias.)

> +			compatible = "ti,da830-ohci";
> +			reg = <0x225000 0x1000>;
> +			interrupts = <59>;
> +			phys = <&usb_phy 1>;
> +			phy-names = "usb-phy";
> +			status = "disabled";
> +		};
>  		gpio: gpio@...000 {
>  			compatible = "ti,dm6441-gpio";
>  			gpio-controller;
>