ARM: dts: Enable USB hub on Arndale

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@linaro.org>
Tested-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
index ca430206c3e81bb4e11b5d166912942dcd3a7c2a..3e4589bd451590edee00aa71520f1b532bef52ea 100644 (file)
--- a/arch/arm/boot/dts/exynos5250-arndale.dts
+++ b/arch/arm/boot/dts/exynos5250-arndale.dts
@@ -541,4 +541,18 @@
        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>;
+               };
+       };
 };