Hi Peter, On a imx27-pdk board I see the following error. Any suggestions? Thanks, Fabio Estevam imx_usb 10024000.usb: No over current polarity defined 8<--- cut here --- Unhandled fault: external abort on non-linefetch (0x808) at 0xf4424184 pgd = (ptrval) [f4424184] *pgd=10000452(bad) Internal error: : 808 [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 27 Comm: kworker/0:1 Not tainted 5.10.0-rc2-next-20201109-00002-g4bce163a428-dirty #135 Hardware name: Freescale i.MX27 (Device Tree Support) Workqueue: events deferred_probe_work_func PC is at hw_phymode_configure+0x4c/0x120 LR is at 0x80000000 pc : [<c0523108>] lr : [<80000000>] psr: 60000013 sp : c1185c70 ip : 00000000 fp : c0950638 r10: 3f888caf r9 : c196e038 r8 : c196e08c r7 : c11b1a20 r6 : c18fb200 r5 : c196f020 r4 : 40000000 r3 : 00000000 r2 : 8c000c04 r1 : 00000000 r0 : f4424184 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 0005317f Table: a0004000 DAC: 00000053 Process kworker/0:1 (pid: 27, stack limit = 0x(ptrval)) Stack: (0xc1185c70 to 0xc1186000) 5c60: c196e020 c0523f74 c12feb58 c12feb58 5c80: c18f5d68 c18f7160 c12fa280 c18fb210 00000000 c18fb210 00000000 c09b7814 5ca0: c09b7814 00000001 00000000 c09aae28 c0950638 c04359e0 c18fb210 c09f9a84 5cc0: 00000000 c043371c c18fb210 c09b7814 c0433b40 c0949028 00000001 00000000 5ce0: c09aae28 c0433a30 00000000 c1185d24 c0433b40 c04318ec 20000013 c10c9f5c 5d00: c12eb574 4da732e0 c0950638 c18fb210 c18fb254 c0949028 c0949028 c0433478 5d20: c12d2000 c18fb210 00000001 4da732e0 c18fb210 c09ab3f0 c18fb210 c0949028 5d40: 00000000 c043280c c18fb210 c10f6810 00000000 c042f5b0 c18fb210 c0398468 5d60: c094e9fc c0021038 c094e9fc 4da732e0 c12fa2a0 00000002 c18fb200 c18fb210 5d80: c094e9fc c094e9dc 00000000 c0435798 c1185dd8 00000000 c18fb200 c10b1f40 5da0: 00000002 00000000 c18faca0 c0523ad8 00000000 60000013 c18faca0 c10f6810 5dc0: c10f6800 c0949028 c7ef88a8 00000000 c18faca0 c052a2f4 c10f4420 00000100 5de0: 00000000 00000000 c11b1a20 00000003 0000000a 00000003 c0529924 00000000 5e00: 01010000 00000000 00000001 00000000 00000000 00000000 00000000 ffffffed 5e20: 00000000 c0524684 00000000 00000000 00000000 ffffffed 00000000 c0524684 5e40: 00000000 00000000 00000000 c12fa500 c12ffea0 00000000 00000000 4da732e0 5e60: c10f6810 00000000 c09b7990 c09b7990 00000001 00000000 c09ab198 c04359e0 5e80: c10f6810 c09f9a84 00000000 c043371c c10f6810 c09b7990 c0433b40 c0949028 5ea0: 00000001 00000000 c09ab198 c0433a30 00000000 c1185eec c0433b40 c04318ec 5ec0: 20000013 c10c9f5c c12eb454 4da732e0 c0950638 c10f6810 c10f6854 c0949028 5ee0: c09ab184 c0433478 c10f6810 c10f6810 00000001 4da732e0 c10f6810 c09ab3f0 5f00: c10f6810 c09ab184 00000000 c043280c c10f6810 c09ab178 c09ab178 c0432cbc 5f20: c09ab194 c1004920 c09d64a0 c7ee9400 00000000 c0036110 ffffe000 c095064c 5f40: c1004920 c0950638 c1004934 ffffe000 c095064c c0965940 00000008 c0036748 5f60: 00000000 c114a100 c114e2c0 c1184000 00000000 c109dec0 c00364ac c1004920 5f80: c114a120 c003d5c8 00000000 c114e2c0 c003d480 00000000 00000000 00000000 5fa0: 00000000 00000000 00000000 c0008568 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [<c0523108>] (hw_phymode_configure) from [<c0523f74>] (ci_hdrc_probe+0x35c/0x8f8) [<c0523f74>] (ci_hdrc_probe) from [<c04359e0>] (platform_drv_probe+0x4c/0xa0) [<c04359e0>] (platform_drv_probe) from [<c043371c>] (really_probe+0x228/0x3d0) [<c043371c>] (really_probe) from [<c0433a30>] (driver_probe_device+0x54/0xb0) [<c0433a30>] (driver_probe_device) from [<c04318ec>] (bus_for_each_drv+0x58/0xc0) [<c04318ec>] (bus_for_each_drv) from [<c0433478>] (__device_attach+0xd8/0x14c) [<c0433478>] (__device_attach) from [<c043280c>] (bus_probe_device+0x8c/0x94) [<c043280c>] (bus_probe_device) from [<c042f5b0>] (device_add+0x3b0/0x764) [<c042f5b0>] (device_add) from [<c0435798>] (platform_device_add+0x100/0x208) [<c0435798>] (platform_device_add) from [<c0523ad8>] (ci_hdrc_add_device+0x414/0x4e0) [<c0523ad8>] (ci_hdrc_add_device) from [<c052a2f4>] (ci_hdrc_imx_probe+0x2fc/0x5ec) [<c052a2f4>] (ci_hdrc_imx_probe) from [<c04359e0>] (platform_drv_probe+0x4c/0xa0) [<c04359e0>] (platform_drv_probe) from [<c043371c>] (really_probe+0x228/0x3d0) [<c043371c>] (really_probe) from [<c0433a30>] (driver_probe_device+0x54/0xb0) [<c0433a30>] (driver_probe_device) from [<c04318ec>] (bus_for_each_drv+0x58/0xc0) [<c04318ec>] (bus_for_each_drv) from [<c0433478>] (__device_attach+0xd8/0x14c) [<c0433478>] (__device_attach) from [<c043280c>] (bus_probe_device+0x8c/0x94) [<c043280c>] (bus_probe_device) from [<c0432cbc>] (deferred_probe_work_func+0x60/0x90) [<c0432cbc>] (deferred_probe_work_func) from [<c0036110>] (process_one_work+0x210/0x5ac) [<c0036110>] (process_one_work) from [<c0036748>] (worker_thread+0x29c/0x608) [<c0036748>] (worker_thread) from [<c003d5c8>] (kthread+0x148/0x170) [<c003d5c8>] (kthread) from [<c0008568>] (ret_from_fork+0x14/0x2c) Exception stack(0xc1185fb0 to 0xc1185ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 Code: e3530000 1a000002 e3c224d2 e182200e (e5802000) ---[ end trace 5e6eafe484314edc ]---
