Hi, On Wed, Feb 25, 2015 at 01:11:22PM +0100, Yegor Yefremov wrote: > On 25.02.2015 12:11, Maxime Ripard wrote: > > On Tue, Feb 24, 2015 at 11:33:57AM -0600, Felipe Balbi wrote: > >> Hi, > >> > >> On Tue, Feb 24, 2015 at 05:50:50PM +0100, Maxime Ripard wrote: > >>> Hi Felipe, > >>> > >>> On Tue, Feb 24, 2015 at 08:54:01AM -0600, Felipe Balbi wrote: > >>>> Hi, > >>>> > >>>> On Tue, Feb 24, 2015 at 11:39:11AM +0100, Maxime Ripard wrote: > >>>>> On Thu, Feb 05, 2015 at 02:21:42PM +0100, Maxime Ripard wrote: > >>>>>> Hi, > >>>>>> > >>>>>> On Thu, Jan 22, 2015 at 08:37:45AM +0100, Yegor Yefremov wrote: > >>>>>>> I have the same experience with 3.15. The switching is working when > >>>>>>> CONFIG_USB_MUSB_DUAL_ROLE is set and dr_mode = "otg". But since 3.16 > >> > >> since 3.16 ? > > > > That's what Yegor said. I never saw it working with 3.15 either. > > I've used 3.15.1 and 3.15.2 with this set of patches: > https://github.com/visionsystemsgmbh/onrisc_br_bsp/tree/master/board/vscom/kernel-patches/linux-3.15 > > And it worked so far. The system: > http://www.visionsystems.de/produkte/baltos-ir-5221.html I've had more time to look into this (thanks Yegor for sponsoring a test/dev platform) what I noticed is that Connect IRQ takes seconds to fire up. Below a tiny log snippet after pluging USB OTG adapter cable that came with IR5521: | [ 1227.200514] musb-hdrc musb-hdrc.1.auto: usbintr (100) epintr(0) Cable connected. ID is grounded. 0x100 == DRVVBUS IRQ | [ 1227.206788] musb-hdrc musb-hdrc.1.auto: VBUS on (a_wait_vrise), devctl 19 MUSB starts to wait for VBUS to reach Session valid threshold | [ 1230.281159] musb-hdrc musb-hdrc.1.auto: usbintr (10) epintr(0) 3 seconds later connect interrupt happens. Looking at VBUS charge time with a scope, it's quite ok. VBUS charges in about 1.77ms. I'll dig further into this. -- balbi
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