From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: PROBLEM: DWC3 USB 3.0 not working on Odroid-XU4 with Exynos 5422 Date: Mon, 17 Oct 2016 11:08:17 +0300 Message-ID: <874m4btn2m.fsf@linux.intel.com> References: <1472414695.3845.3.camel@mniewoehner.de> <87lgzgdof3.fsf@linux.intel.com> <57C41582.1030604@linux.intel.com> <1472468730.4925.3.camel@mniewoehner.de> <1475578687.1912.28.camel@mniewoehner.de> <1475771380.22019.5.camel@mniewoehner.de> <87y420wqoy.fsf@linux.intel.com> <1475871962.1697.12.camel@mniewoehner.de> <1476627597.1752.3.camel@mniewoehner.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4373249788608520865==" Return-path: In-Reply-To: <1476627597.1752.3.camel@mniewoehner.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Michael =?utf-8?Q?Niew=C3=B6hner?= , Kishon Vijay Abraham I Cc: Krzysztof Kozlowski , "linux-samsung-soc@vger.kernel.org" , Mathias Nyman , Vivek Gautam , Anand Moon , Pankaj Dubey , Linux USB Mailing List , Linux Kernel , Kukjin Kim , Vivek Gautam , Alim Akhtar , Greg Kroah-Hartman , linux-arm-kernel List-Id: linux-samsung-soc@vger.kernel.org --===============4373249788608520865== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, Michael Niew=C3=B6hner writes: > Hi Felipe, > On Fri, 2016-10-07 at 22:26 +0200, Michael Niew=C3=B6hner wrote: >> Hi Felipe, >>=20 >> On Fr, 2016-10-07 at 10:42 +0300, Felipe Balbi wrote: >> > Hi, >> >=20 >> > Michael Niew=C3=B6hner writes: >> > >=20 >> > > >=20 >> > > > The clocks are same across working/non-working. >> > > > Is it possible to bisect the commit that's causing hang for 4.8x ? >> > >=20 >> > >=20 >> > > [c499ff71ff2a281366c6ec7a904c547d806cbcd1] usb: dwc3: core: re-facto= r init and exit paths >> > > This patch causes both the hang on reboot and the lsusb hang. >> >=20 >> > How to reproduce? Why don't we see this on x86 and TI boards? I'm >> > guessing this is failed bisection, as I can't see anything in that >> > commit that would cause reboot hang. Also, that code path is *NOT* >> > executed when you run lsusb. >> >=20 >>=20 >> I've tested this procedure multiple times to be sure: >>=20 >> - checkout=C2=A0c499ff71, compile, boot the odroid >> - run lsusb -v =3D> lsusb hangs, can't terminate with ctrl-c >> - hard reset, after boot run poweroff or reboot =3D> board does not comp= letely power off / reboot (see log below) >> - revert c499ff71, mrproper, compile, boot the odroid >> - run lsusb -v =3D> shows full output, not hanging >> - run reboot or poweroff =3D> board powers off / reboots just fine >>=20 >>=20 >> dmesg poweroff not working: >> ... >> [=C2=A0=C2=A0120.733519] systemd-journald[144]: systemd-journald stopped= as pid 144=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.742663] systemd-shutdown[1]: Sending SIGKILL to remaini= ng processes...=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.769212] systemd-shutdown[1]: Unmounting file systems.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.773713] systemd-shutdown[1]: Unmounting /sys/kernel/deb= ug.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.827211] systemd-shutdown[1]: Unmounting /dev/mqueue.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.081672] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.091687] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.095608] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.101014] systemd-shutdown[1]: All filesystems unmounted.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.106523] systemd-shutdown[1]: Deactivating swaps.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.111585] systemd-shutdown[1]: All swaps deactivated.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.116661] systemd-shutdown[1]: Detaching loop devices.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.126395] systemd-shutdown[1]: All loop devices detached.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.130525] systemd-shutdown[1]: Detaching DM devices.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.135824] systemd-shutdown[1]: All DM devices detached.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.166327] systemd-shutdown[1]: /lib/systemd/system-shutdo= wn succeeded.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.171739] systemd-shutdown[1]: Powering off. >>=20 >> =3D> at this point removing the sd card would show a message=C2=A0 >> "removed mmc0" (not sure what the real message was...) so the board is n= ot completely off. >>=20 >>=20 >> dmesg poweroff working: >> ... >> [=C2=A0=C2=A0120.733519] systemd-journald[144]: systemd-journald stopped= as pid 144=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.742663] systemd-shutdown[1]: Sending SIGKILL to remaini= ng processes...=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.769212] systemd-shutdown[1]: Unmounting file systems.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.773713] systemd-shutdown[1]: Unmounting /sys/kernel/deb= ug.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0120.827211] systemd-shutdown[1]: Unmounting /dev/mqueue.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.081672] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.091687] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.095608] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.101014] systemd-shutdown[1]: All filesystems unmounted.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.106523] systemd-shutdown[1]: Deactivating swaps.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.111585] systemd-shutdown[1]: All swaps deactivated.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.116661] systemd-shutdown[1]: Detaching loop devices.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.126395] systemd-shutdown[1]: All loop devices detached.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.130525] systemd-shutdown[1]: Detaching DM devices.=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.135824] systemd-shutdown[1]: All DM devices detached.= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.166327] systemd-shutdown[1]: /lib/systemd/system-shutdo= wn succeeded.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 >> [=C2=A0=C2=A0121.171739] systemd-shutdown[1]: Powering off. >> [=C2=A0=C2=A0121.182331] rebo=EF=BF=BD >>=20 >>=20 >>=20 >> Best regards >> Michael Niew=C3=B6hner > > > I did some more tests with next-20161016. Reverting / commenting out > one part of your patch "solves" the lsusb hang, the reboot problem > and also the "debounce failed" message. [1] > Another "solution" is to call phy_power_off before phy_power_on. [2] > > Disclaimer: I have no idea what I was doing ;-) These were just some > simple trial-and-error attempts that maybe help to find the real > cause of the problems. > > [1] > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c > index 7287a76..5ef589d 100644 > --- a/drivers/usb/dwc3/core.c > +++ b/drivers/usb/dwc3/core.c > @@ -724,6 +724,7 @@ static int dwc3_core_init(struct dwc3 *dwc) > =C2=A0 /* Adjust Frame Length */ > =C2=A0 dwc3_frame_length_adjustment(dwc); > =C2=A0 > +/* > =C2=A0 usb_phy_set_suspend(dwc->usb2_phy, 0); > =C2=A0 usb_phy_set_suspend(dwc->usb3_phy, 0); > =C2=A0 ret =3D phy_power_on(dwc->usb2_generic_phy); > @@ -733,6 +734,7 @@ static int dwc3_core_init(struct dwc3 *dwc) > =C2=A0 ret =3D phy_power_on(dwc->usb3_generic_phy); > =C2=A0 if (ret < 0) > =C2=A0 goto err3; > +*/ > =C2=A0 > =C2=A0 ret =3D dwc3_event_buffers_setup(dwc); > =C2=A0 if (ret) { > > [2] > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c > index 7287a76..f6c8e13 100644 > --- a/drivers/usb/dwc3/core.c > +++ b/drivers/usb/dwc3/core.c > @@ -726,6 +726,8 @@ static int dwc3_core_init(struct dwc3 *dwc) > =C2=A0 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0usb_phy_set_suspend(dwc->= usb2_phy, 0); > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0usb_phy_set_suspend(dwc->= usb3_phy, 0); > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0phy_power_off(dwc->usb2_generi= c_phy); > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0phy_power_off(dwc->usb3_generi= c_phy); This looks like a PHY driver bug to me. Which PHY driver are you using? =2D-=20 balbi --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIcBAEBCAAGBQJYBIbxAAoJEMy+uJnhGpkGS8MQALKmFQUOOG54sFY3VliB4U+3 1Ne4RMdT+iFJEPtUZtThUgE+idZ3BZpdOrOlAncPOEYQuSr03uBBZhunruB9zFQJ HZVqmOhb2MB6O+tu/0kE4DG4ADUJVwIQWEc0zCBBaFkmgKp0YR0QItJlbe+zeUao TDYqWskN2ObLsNKFSvXCC6/Y7WIljGqcEcRwL3MjoZQsm+HZNPJfZUlnxb1OJZJJ tiL6JtVgUbODlts+jOrwGDj+u9LrneSEzCalH00RROsnhFbJPR7Hpp3ZquCmhDRQ 1lTEDPSHqHt4IpCOHYfpSJll/5FFpCBZGte5fpDnRhc24eEyaIRM4C4P4rWGxOb6 xfOvPlc/0Q4gEDYod/vqjRCDm3GjyVoqoc8BCT7jDDYAQ5EWPwq/HusumUzciSlE 07dqSr44LlhRPpXk+OPxQxhP2+Quc1hTH8Dw1EwHJER4Xwgv3kSWEpCLW3HiTpJp SRrNSyw8uFSwikCAWSqXk3MHoFRQvH2DPOvLeNnXDQrbMU6HsJFCj1Nr9c01SGbI KfNWKbBvuwStNKnx3HSt1dreszSxxLO8uA/W+OGF61Fd0cdPToBqnvKUCvBEqKpA /GhIl2cSk0zPL1sBi9icik5Mbmm54SEVtJ5UX8plWGzP523VjxzwmsHVjT93O7KC konN/NoNKJkYvfpFDtEH =xzIb -----END PGP SIGNATURE----- --=-=-=-- --===============4373249788608520865== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4373249788608520865==--