From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Sun, 11 May 2014 09:40:28 +0800 Subject: i.MX6 USB OTG support is broken on linux-next In-Reply-To: <4285b0d55d2545b99c4ba6b703e65a12@BL2PR03MB226.namprd03.prod.outlook.com> References: <20140509130046.GP2794@dragon> <20140510111003.GA1593@shlinux1.ap.freescale.net> <20140510131815.GT2794@dragon> <4285b0d55d2545b99c4ba6b703e65a12@BL2PR03MB226.namprd03.prod.outlook.com> Message-ID: <20140511014027.GV2794@dragon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sun, May 11, 2014 at 08:40:25AM +0800, Chen Peter-B29397 wrote: > As I explained before: > "OTG devices and Embedded Hosts both have Targeted Host functionality, > and each Targeted Host has its TPL (Targeted Peripheral List), only the > devices are at TPL are supported by Targeted Host." > > So when the board is OTG & EH (CONFIG_USB_OTG is set), it should > have TPL according to spec. In fact, even the CONFIG_USB_OTG_WHITELIST > is not set, the non-TPL devices have not worked well, eg, it will > not be enumerated again after it has disconnected from host 10 seconds > later due to vbus has turned off by host. So all in all, it sounds to me that in my case, USB_OTG_FSM shouldn't be set, neither in defconfig nor manually in menuconfig, right? What about USB_OTG? Can I set it in defconfig or manually in menuconfig? Shawn