From 1db3b92cb24cf738a7edbe13ee2f21905adf0c6b Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Thu, 23 Mar 2017 17:27:29 +0100 Subject: ARM64: dts: meson-gxbb: Add USB Hub GPIO hog The ODroid-C2 on-board USB Hub needs to to have it's reset signal set to high level in order to be enumerated by the USB Host Controller. But this management must be part of the currently in-development Generic Power Sequence patch that will allow a USB Controller driver to start and stop a power sequence associated to the USB Bus. In the meantime, a simple USB Hog will work to enable the USB Hub. Signed-off-by: Neil Armstrong Reviewed-by: Linus Walleij Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'arch/arm64/boot') diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts index 76cc970cc4aa..a8f1f8a00b51 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts @@ -235,6 +235,21 @@ pinctrl-names = "default"; }; +&gpio_ao { + /* + * WARNING: The USB Hub on the Odroid-C2 needs a reset signal + * to be turned high in order to be detected by the USB Controller + * This signal should be handled by a USB specific power sequence + * in order to reset the Hub when USB bus is powered down. + */ + usb-hub { + gpio-hog; + gpios = ; + output-high; + line-name = "usb-hub-reset"; + }; +}; + &usb0_phy { status = "okay"; phy-supply = <&usb_otg_pwr>; -- cgit v1.2.3