Hi Peter, 2014-02-18 1:57 GMT+01:00 Peter Chen <peter.chen@xxxxxxxxxxxxx>: > On Mon, Feb 17, 2014 at 08:23:38AM +0100, Christian Gmeiner wrote: >> Hi Peter >> >> 2014-02-17 2:22 GMT+01:00 Peter Chen <peter.chen@xxxxxxxxxxxxx>: >> > On Fri, Feb 14, 2014 at 01:59:56PM +0100, Christian Gmeiner wrote: >> >> Hi Peter. >> >> >> >> I am currently trying to get HSIC working on an imx6d based board. >> >> >> >> Some time ago I asked if somebody has some patches etc. and got this: >> >> http://www.spinics.net/lists/arm-kernel/msg303281.html >> >> >> >> I needed some other changes to get it booting without any oops. >> >> But I have some questions: >> >> >> >> * usbhc2/3 can only do HSCI. And I do not need any PHY for it. That >> >> means I need to change ci_hdrc_imx.c in order to work without a PHY. >> >> >> > >> > No, add generic phy node to dts, and points to it at hsic node. >> > http://marc.info/?l=linux-usb&m=139260274919538&w=2 >> > >> >> Okay, this sounds like a good plan - will try it. >> >> >> * Here are some logs: http://dpaste.com/hold/1617947/ >> >> It looks like EHCI takes over and does one port (the HSIC?). The problem >> >> seems now that the port never changes its status to connected, but I am >> >> 100% sure that there is a LAN9730 [1] connected to that usbhc. >> >> >> >> [1] http://www.microchip.com/wwwproducts/Devices.aspx?product=LAN9730 >> > >> > Yes, there is one ehci port, but never connected, so there is no bus >> > reset interrupt, and no enumeration. >> > >> >> How should this bus reset be done? > > When the port is connected, the controller will trigger pcd (port change > ) interrupt, then, the khubd will know it is a port change event, and > hcd will issue bus reset (software operation). > Okay that makes sense. In theory the ehci core should do the reset. Is there anything special regarding reset and HSIC? >> >> > It seems more and more guys are working at hsic controller, I will >> > try to submit hsic support asap. >> > >> >> If you have something working it would be really cool to get those patches. I am >> working some days on this topic but without much success and I am running out >> of time :/ >> > > Will keep you posted. > Hope you soon will find some time. greets -- Christian Gmeiner, MSc https://soundcloud.com/christian-gmeiner -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
