[PATCH v4 4/4] ARM: dts: da850: Add the usb otg device node

[David Lechner]

On 11/03/2016 10:59 AM, Alexandre Bailon wrote:
> This adds the device tree node for the usb otg
> controller present in the da850 family of SoC's.
> This also enables the otg usb controller for the lcdk board.
>
> Signed-off-by: Alexandre Bailon <abailon at baylibre.com>
> ---
>  arch/arm/boot/dts/da850-lcdk.dts |  8 ++++++++
>  arch/arm/boot/dts/da850.dtsi     | 15 +++++++++++++++
>  2 files changed, 23 insertions(+)
>
> diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
> index 7b8ab21..9f5040c 100644
> --- a/arch/arm/boot/dts/da850-lcdk.dts
> +++ b/arch/arm/boot/dts/da850-lcdk.dts
> @@ -158,6 +158,14 @@
>  	rx-num-evt = <32>;
>  };
>
> +&usb_phy {
> +	status = "okay";
> +	};
> +
> +&usb0 {
> +	status = "okay";
> +};
> +
>  &aemif {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&nand_pins>;
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index f79e1b9..322a31a 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -372,6 +372,21 @@
>  					>;
>  			status = "disabled";
>  		};
> +		usb_phy: usb-phy {
> +			compatible = "ti,da830-usb-phy";
> +			#phy-cells = <1>;
> +			status = "disabled";
> +		};

The usb_phy node is already in the device tree as a child of the cfgchip 
syscon node[1]. It needs to be removed from this patch, otherwise we 
will end up with duplicate usb_phy nodes.

[1]: 
https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/commit/?h=v4.10/dt&id=1b499f255589204466d8f8ab26e6b577d7b5c88f

> +		usb0: usb at 200000 {
> +			compatible = "ti,da830-musb";
> +			reg = <0x200000 0x10000>;
> +			interrupts = <58>;
> +			interrupt-names = "mc";
> +			dr_mode = "otg";

Isn't this the default value? Could we omit the dr_mode property here?

> +			phys = <&usb_phy 0>;
> +			phy-names = "usb-phy";
> +			status = "disabled";
> +		};
>  		gpio: gpio at 226000 {
>  			compatible = "ti,dm6441-gpio";
>  			gpio-controller;
>