On Fri, Jun 05, 2015 at 04:34:54PM +0200, Valentin Longchamp wrote: > Hello, > > I am currently bringing up the USB 2.0 Host controller of the Bobcat's (98DX4122 > Marvell switch) internal kirkwood CPU on a variation of Keymile's km_kirwood > hardware (kirkwood-km_kirkwood.dts). > > When the driver registers its hcd, it fails with a timemout as it can be seen in > the below log: > > > root@kmcoge5un:~# dmesg -n 8 > > root@kmcoge5un:~# insmod ehci-orion.ko > > ehci-orion: EHCI orion driver > > Initializing Orion-SoC USB Host Controller > > orion-ehci f1050000.ehci: EHCI Host Controller > > orion-ehci f1050000.ehci: new USB bus registered, assigned bus number 1 > > orion-ehci f1050000.ehci: reset hcs_params 0x10011 dbg=0 ind cc=0 pcc=0 ordered ports=1 > > orion-ehci f1050000.ehci: reset hcc_params 0006 thresh 0 uframes 256/512/1024 park > > orion-ehci f1050000.ehci: park 0 > > orion-ehci f1050000.ehci: reset command 0080002 (park)=0 ithresh=8 period=1024 Reset HALT > > orion-ehci f1050000.ehci: can't setup > > orion-ehci f1050000.ehci: USB bus 1 deregistered > > orion-ehci f1050000.ehci: init f1050000.ehci fail, -110 > > orion-ehci: probe of f1050000.ehci failed with error -110 > > This is very similar to this problem, except that it always happens: > https://lkml.org/lkml/2012/6/4/381 > > I have cornered it out to the last handshake() call of the ehci_halt() call, > that should set the controller in the HALT state. If I comment this handshake() > call out, the registration is fine and the controller then looks OK (I don't > have a hardware with a real USB bus to further test it yet). > > My current idea is that maybe a reset or an initialization may be missing, but I > wanted to ask if anybody already has seen a similar behavior with the various > hardware platform supported by ehci-orion ? Hi Valentin I don't remember seeing any problems like this on any kirkwood devices. Do you know what phy the 98DX4122 uses? The ehci-orion.c has some code for handling the Orion5X USB phy. I also think u-boot might also have some code. Sebastian might know more, i think he implemented USB support for barebox. Andrew -- 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
