From 062baa25661ed30af10e16fe9d147bb2300b15bd Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Mon, 27 Apr 2020 14:52:54 +0800 Subject: [PATCH] rockchip: dts: rock64: Fix XHCI usage If the VBUS regulator is always-on, XHCI will fail to detect USB 3.0 devices; USB 2.0 devices will work however. Make the VBUS regulator controllable and tie it to only the XHCI. This makes all three USB ports usable. Signed-off-by: Chen-Yu Tsai Reviewed-by: Kever Yang --- arch/arm/dts/rk3328-rock64-u-boot.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/dts/rk3328-rock64-u-boot.dtsi b/arch/arm/dts/rk3328-rock64-u-boot.dtsi index e5946d2..8318bf4 100644 --- a/arch/arm/dts/rk3328-rock64-u-boot.dtsi +++ b/arch/arm/dts/rk3328-rock64-u-boot.dtsi @@ -12,5 +12,16 @@ }; &usb_host0_xhci { + vbus-supply = <&vcc_host_5v>; status = "okay"; }; + +/* + * This makes XHCI responsible for toggling VBUS. This is needed to work + * around an issue where either XHCI only works with USB 2.0 or OTG doesn't + * work, depending on how VBUS is configured. Having USB 3.0 seems better. + */ +&vcc_host_5v { + /delete-property/ regulator-always-on; + /delete-property/ regulator-boot-on; +}; -- 2.7.4