On Odroid U3 (Exynos4412-based) board if USB was initialized by
bootloader (in U-Boot "usb start" before tftpboot), the HUB after
successful probing was not visible in the system ("lsusb"). Connected
devices were not visible neither.The USB3503 takes optional regulator so provide one - buck8 on Odroid U3. Additionally switch the control of buck8 to GPIO mode. It is faster than I2C/register mode and it is the easiest way to disable it (regulator state is a logical OR state of GPIO and register value). Signed-off-by: Krzysztof Kozlowski <[email protected]> --- arch/arm/boot/dts/exynos4412-odroidu3.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts index d73aa6c58fe3..5308a955ede4 100644 --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts @@ -74,6 +74,7 @@ regulator-name = "BUCK8_P3V3"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; + maxim,ena-gpios = <&gpa1 1 GPIO_ACTIVE_HIGH>; }; /* VDDQ for MSHC (eMMC card) */ @@ -98,6 +99,7 @@ clock-names = "refclk"; clocks = <&pmu_system_controller 0>; refclk-frequency = <24000000>; + vdd33-supply = <&buck8_reg>; }; &ehci { -- 1.9.1
