From mboxrd@z Thu Jan 1 00:00:00 1970 From: fabio.estevam@freescale.com (Fabio Estevam) Date: Mon, 15 Dec 2014 13:33:59 -0200 Subject: [PATCH] ARM: dts: imx51-babbage: Fix hang on USB probe Message-ID: <1418657639-19589-1-git-send-email-fabio.estevam@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Currently the following hang is observed during USB probe: [ 1.243660] usbcore: registered new interface driver usb-storage [ 1.261619] ci_hdrc ci_hdrc.1: doesn't support gadget [ 1.266730] ci_hdrc ci_hdrc.1: EHCI Host Controller [ 1.272058] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1 [ 1.290639] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00 [ 1.301162] hub 1-0:1.0: USB hub found [ 1.305248] hub 1-0:1.0: 1 port detected (hangs here...) Pass the 'regulator-always-on' to make sure that the USB PHY and USB hub are properly powered. Cc: # 3.16 Signed-off-by: Fabio Estevam --- arch/arm/boot/dts/imx51-babbage.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts index 56569ce..65d3d97 100644 --- a/arch/arm/boot/dts/imx51-babbage.dts +++ b/arch/arm/boot/dts/imx51-babbage.dts @@ -137,6 +137,7 @@ regulator-max-microvolt = <5000000>; gpio = <&gpio2 5 GPIO_ACTIVE_HIGH>; enable-active-high; + regulator-always-on; }; reg_usbotg_vbus: regulator at 1 { @@ -149,6 +150,7 @@ regulator-max-microvolt = <5000000>; gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>; enable-active-high; + regulator-always-on; }; }; -- 1.9.1