imx27.dtsi usbotg/usbh2 oops in fsl_usb2_mph_dr_of_probe

Hi,

when tried to activate the USB-OTG or USBH2 with the FDT the system oops

[    1.034403] ehci-mxc: Freescale On-Chip EHCI Host driver
[    1.041158] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    1.049406] pgd = c0004000
[    1.052219] [00000000] *pgd=00000000
[    1.055868] Internal error: Oops: 5 [#1] ARM
[    1.060167] Modules linked in:
[    1.063287] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc7 #2
[    1.069429] task: c7836000 ti: c783c000 task.ti: c783c000
[    1.074888] PC is at fsl_usb2_mph_dr_of_probe+0x314/0x428
[    1.080342] LR is at platform_device_alloc+0x5c/0x6c
[    1.085362] pc : [<c028c3b4>]    lr : [<c021c5c4>] psr: a0000013
[    1.085362] sp : c783dd68  ip : 00000000  fp : c783ddf4
[    1.096888] r10: c7872500  r9 : c79ed600  r8 : 00000002
[    1.102154] r7 : c0564c40  r6 : 00000000  r5 : c7873110  r4 : c7873100
[    1.108722] r3 : 00000000  r2 : ffffffff  r1 : 00000000  r0 : c79ed600
[    1.115291] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM Segment kernel
[    1.122643] Control: 0005317f  Table: a0004000  DAC: 00000017
[    1.128427] Process swapper (pid: 1, stack limit = 0xc783c1c0)
[    1.134299] Stack: (0xc783dd68 to 0xc783e000)
[    1.138718] dd60:                   c783dd94 c0564c40 c00dac3c 00000000 00000001 00000001
[    1.146962] dd80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000010
[    1.155204] dda0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.163452] ddc0: 00000000 00000000 c783dde4 c7873110 c7873144 c0564c00 c058f0b0 00000000
[    1.171703] dde0: c783c020 00000000 c783de04 c783ddf8 c021bde0 c028c0b0 c783de24 c783de08
[    1.179953] de00: c021ab48 c021bdd4 c7873110 c7873144 c0564c00 00000000 c783de44 c783de28
[    1.188204] de20: c021ad40 c021aaac c021acd0 00000000 c0564c00 c021acd0 c783de6c c783de48
[    1.196457] de40: c02191c4 c021ace0 c7823f4c c786a450 c79f77b4 c0564c00 c055b2b0 c79f7780
[    1.204709] de60: c783de7c c783de70 c021a6ac c0219158 c783dea4 c783de80 c021a23c c021a69c
[    1.212962] de80: c04d71b6 c783de90 c0564c00 c053ae0c c0530264 c0572980 c783debc c783dea8
[    1.221213] dea0: c021b384 c021a168 00000006 c053ae0c c783decc c783dec0 c021c3a8 c021b2f0
[    1.229466] dec0: c783dedc c783ded0 c053027c c021c368 c783df54 c783dee0 c000888c c0530274
[    1.237719] dee0: c00d2cb8 c00d29c8 c783df0c c783def8 c051b400 c01c8b84 c069ca87 c069ca8c
[    1.245969] df00: c783df54 c783df10 c002c26c c051b4d8 00000000 c05198fc 00000006 00000006
[    1.254219] df20: 00000086 c051909c c00313d0 00000006 00000006 c053ae0c c053fb70 c0572980
[    1.262469] df40: c0572980 00000086 c783df94 c783df58 c051bb50 c0008804 00000006 00000006
[    1.270717] df60: c051b4c8 c783df10 00000001 01234567 00000000 c03f72fc 00000000 00000000
[    1.278964] df80: 00000000 00000000 c783dfac c783df98 c03f730c c051ba60 00000000 00000000
[    1.287212] dfa0: 00000000 c783dfb0 c0009450 c03f730c 00000000 00000000 00000000 00000000
[    1.295453] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.303696] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    1.311897] Backtrace:
[    1.314448] [<c028c0a0>] (fsl_usb2_mph_dr_of_probe+0x0/0x428) from [<c021bde0>] (platform_drv_probe+0x1c/0x20)
[    1.324544] [<c021bdc4>] (platform_drv_probe+0x0/0x20) from [<c021ab48>] (driver_probe_device+0xac/0x1e8)
[    1.334204] [<c021aa9c>] (driver_probe_device+0x0/0x1e8) from [<c021ad40>] (__driver_attach+0x70/0x94)
[    1.343544]  r7:00000000 r6:c0564c00 r5:c7873144 r4:c7873110
[    1.349383] [<c021acd0>] (__driver_attach+0x0/0x94) from [<c02191c4>] (bus_for_each_dev+0x7c/0x90)
[    1.358375]  r6:c021acd0 r5:c0564c00 r4:00000000 r3:c021acd0
[    1.364210] [<c0219148>] (bus_for_each_dev+0x0/0x90) from [<c021a6ac>] (driver_attach+0x20/0x28)
[    1.373026]  r6:c79f7780 r5:c055b2b0 r4:c0564c00
[    1.377796] [<c021a68c>] (driver_attach+0x0/0x28) from [<c021a23c>] (bus_add_driver+0xe4/0x24c)
[    1.386573] [<c021a158>] (bus_add_driver+0x0/0x24c) from [<c021b384>] (driver_register+0xa4/0xe8)
[    1.395478]  r7:c0572980 r6:c0530264 r5:c053ae0c r4:c0564c00
[    1.401303] [<c021b2e0>] (driver_register+0x0/0xe8) from [<c021c3a8>] (__platform_driver_register+0x50/0x64)
[    1.411163]  r5:c053ae0c r4:00000006
[    1.414862] [<c021c358>] (__platform_driver_register+0x0/0x64) from [<c053027c>] (fsl_usb2_mph_dr_driver_init+0x18/0x20)
[    1.425812] [<c0530264>] (fsl_usb2_mph_dr_driver_init+0x0/0x20) from [<c000888c>] (do_one_initcall+0x98/0x140)
[    1.435889] [<c00087f4>] (do_one_initcall+0x0/0x140) from [<c051bb50>] (kernel_init_freeable+0x100/0x1c4)
[    1.445488]  r9:00000086 r8:c0572980 r7:c0572980 r6:c053fb70 r5:c053ae0c
r4:00000006
[    1.453532] [<c051ba50>] (kernel_init_freeable+0x0/0x1c4) from [<c03f730c>] (kernel_init+0x10/0xec)
[    1.462610]  r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c03f72fc
r4:00000000
[    1.470645] [<c03f72fc>] (kernel_init+0x0/0xec) from [<c0009450>] (ret_from_fork+0x14/0x24)
[    1.479027]  r4:00000000 r3:00000000
[    1.482703] Code: e1c429d0 e1c929f0 e599c08c e594108c (e1c120d0)
[    1.489025] ---[ end trace 1b9409ded9abd572 ]---
[    1.493810] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

config: (imx27.dtsi)

            usbotg: usb@10024000 {
                compatible = "fsl-usb2-dr";
                reg = <0x10024000 0x200>;
                interrupts = <56>;
                dr_mode = "host";
                phy_type = "ulpi";
                status = "disabled";
            };

some help welcome.
Chris

You should have posted this to the linux-usb list instead :-)

You should use compatible ="fsl,imx27-usb" so that it uses the chipidea usb driver.

I didn't get USB detected with

compatible ="fsl,imx27-usb"

nothing happen.

You probably need a mx27 entry into drivers/usb/chipidea/usbmisc_imx.c.

Again, this is offtopic to this list, so please start a new thread at linux-usb,

going to sign up for the linux-usb! Thanks

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The ChipIdea was not selected in the .config and this is why nothing come out. (only if someone read the thread and wondering why)