linux-kernel - Re: [PATCH v2 2/2] arm64: dts: exynos: add OF graph between USB-PHY and MUIC

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Date:   Wed, 20 Jun 2018 20:28:44 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Andrzej Hajda <a.hajda@...sung.com>
Cc:     "open list:DESIGNWARE USB3 DRD IP DRIVER" <linux-usb@...r.kernel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Inki Dae <inki.dae@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v2 2/2] arm64: dts: exynos: add OF graph between USB-PHY
 and MUIC

On Tue, May 15, 2018 at 02:12:39PM +0200, Andrzej Hajda wrote:
> OF graph describes USB data lanes between USB-PHY and respective MUIC.
> Since graph is present and DWC driver can use it to get extcon, obsolete
> extcon property can be removed.
> 
> Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
> ---
>  .../dts/exynos/exynos5433-tm2-common.dtsi     | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)

dtc W=1 now complains with:
===
Warning (graph_child_address):
/soc/hsi2c@...90000/max77843@...max77843-muic/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
===

Do you plan to add more ports soon?

Best regards,
Krzysztof

> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> index 03453b822093..042e5894a138 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> @@ -868,6 +868,18 @@
>  					};
>  				};
>  			};
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					muic_to_usb: endpoint {
> +						remote-endpoint = <&usb_to_muic>;
> +					};
> +				};
> +			};
>  		};
>  
>  		regulators {
> @@ -1287,12 +1299,17 @@
>  
>  &usbdrd_dwc3 {
>  	dr_mode = "otg";
> -	extcon = <&muic>;
>  };
>  
>  &usbdrd30_phy {
>  	vbus-supply = <&safeout1_reg>;
>  	status = "okay";
> +
> +	port {
> +		usb_to_muic: endpoint {
> +			remote-endpoint = <&muic_to_usb>;
> +		};
> +	};
>  };
>  
>  &xxti {
> -- 
> 2.17.0
>