ARM: dts: omap3-beagle: Fix USB host on beagle boards (for 3.13)

Beagle (rev. C4) and Beagle-XM (all revs) need VAUX2 1.8V supply
for the USB PHY.

As the generic PHY driver can't handle more than one supply
at the moment, we configure this supply to be always on.
This will cause a very small power impact if the USB host subsystem
is not in use, about 76.86 micro-W + LDO power.

Older Beagle boards (prior to C4) don't have VAUX2 connected anywhere,
so there won't be any functional impact on those boards other than
some additional LDO power consumption.

Reported-by: Nishanth Menon <nm@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 31a632f7effbf239f298ff3619cdacdc5587356e..df33a50bc070b508fd8dacd8a3c72f645c18d3e0 100644 (file)
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -215,3 +215,10 @@
 &usbhsehci {
        phys = <0 &hsusb2_phy>;
 };
+
+&vaux2 {
+       regulator-name = "usb_1v8";
+       regulator-min-microvolt = <1800000>;
+       regulator-max-microvolt = <1800000>;
+       regulator-always-on;
+};

diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index fa532aaacc68943989241b92a6e31743e3e854fe..4e384fcc6ad51aca87e8373e83cfb4c8e5bfaf81 100644 (file)
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -178,3 +178,10 @@
        mode = <3>;
        power = <50>;
 };
+
+&vaux2 {
+       regulator-name = "vdd_ehci";
+       regulator-min-microvolt = <1800000>;
+       regulator-max-microvolt = <1800000>;
+       regulator-always-on;
+};