[PATCH] ARM: dts: Enable USB hub on Arndale

[Tushar Behera]

On 14 August 2013 15:28, Mark Brown <broonie at kernel.org> wrote:
> From: Mark Brown <broonie at linaro.org>
>
> The Arndale has a SMSC USB3503 connected in hardware only mode like a PHY,
> support it using the usb-nop-xceiv binding.
>
> Note that due to a regrettable decision to use a regulator to represent
> the reset signal this uses a fixed voltage regulator to do that, there
> is a plan to use the reset controller binding once that is merged so it
> does not seem worthwhile to fix the usb-nop-xceiv driver at this point.
>
> Signed-off-by: Mark Brown <broonie at linaro.org>
> ---
>
> This doesn't 100% work right now since we don't yet have a solution to
> ensure that this gets started after the USB controller but those
> modifications are small (or can be done at runtime with module loading).
>
>  arch/arm/boot/dts/exynos5250-arndale.dts | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
> index 96d528d..e477e23 100644
> --- a/arch/arm/boot/dts/exynos5250-arndale.dts
> +++ b/arch/arm/boot/dts/exynos5250-arndale.dts
> @@ -539,4 +539,22 @@
>         rtc {
>                 status = "okay";
>         };
> +
> +       usb_hub_bus {
> +               compatible = "simple-bus";
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               // SMSC USB3503 connected in hardware only mode as a PHY
> +               usb_hub: usb_hub {
> +                       compatible = "smsc,usb3503a";
> +
> +                       reset-gpios = <&gpx3 5 1>;
> +                       connect-gpios = <&gpd1 7 1>;
> +               };
> +       };
> +


> +       usb at 12110000 {
> +               usb-phy = <&usb2_phy>;
> +       };

ehci-s5p driver doesn't use 'usb-phy' property to find the PHY driver,
hence this is not required.

Without this change,
Tested-by: Tushar Behera <tushar.behera at linaro.org>

-- 
Tushar Behera