Hello Lorenzo and Martin, I'm testing the LSM9DS1 support recently added to the st_lsm6dsx iio/imu driver and I'm encountering a device tree problem related to interrupt config. Here's the exception I'm seeing: [ 4.172529] irq 277: nobody cared (try booting with the "irqpoll" option) [ 4.179341] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc5-00322-g792b824-dirty #7 [ 4.187359] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 4.193920] [<c0112750>] (unwind_backtrace) from [<c010d018>] (show_stack+0x10/0x14) [ 4.201690] [<c010d018>] (show_stack) from [<c0c2bfc8>] (dump_stack+0xd8/0x10c) [ 4.209027] [<c0c2bfc8>] (dump_stack) from [<c01923fc>] (__report_bad_irq+0x24/0xc0) [ 4.216793] [<c01923fc>] (__report_bad_irq) from [<c0192820>] (note_interrupt+0x27c/0x2dc) [ 4.225078] [<c0192820>] (note_interrupt) from [<c018f174>] (handle_irq_event_percpu+0x54/0x7c) [ 4.233793] [<c018f174>] (handle_irq_event_percpu) from [<c018f1d4>] (handle_irq_event+0x38/0x5c) [ 4.242681] [<c018f1d4>] (handle_irq_event) from [<c0193664>] (handle_level_irq+0xc8/0x154) [ 4.251051] [<c0193664>] (handle_level_irq) from [<c018df58>] (generic_handle_irq+0x20/0x34) [ 4.259510] [<c018df58>] (generic_handle_irq) from [<c053c348>] (mxc_gpio_irq_handler+0xc4/0xf8) [ 4.268313] [<c053c348>] (mxc_gpio_irq_handler) from [<c053c3e0>] (mx3_gpio_irq_handler+0x64/0xb8) [ 4.277287] [<c053c3e0>] (mx3_gpio_irq_handler) from [<c018df58>] (generic_handle_irq+0x20/0x34) [ 4.286089] [<c018df58>] (generic_handle_irq) from [<c018e550>] (__handle_domain_irq+0x64/0xe0) [ 4.294810] [<c018e550>] (__handle_domain_irq) from [<c0529610>] (gic_handle_irq+0x4c/0xa0) [ 4.303181] [<c0529610>] (gic_handle_irq) from [<c0101a70>] (__irq_svc+0x70/0x98) [ 4.310675] Exception stack(0xc1301f10 to 0xc1301f58) [ 4.315744] 1f00: 00000001 00000006 00000000 c130c340 [ 4.323937] 1f20: c1300000 c1308928 00000001 c1308960 00000000 c12b9db0 c1308908 00000000 [ 4.332128] 1f40: 00000000 c1301f60 c0182010 c0109508 20000013 ffffffff [ 4.338762] [<c0101a70>] (__irq_svc) from [<c0109508>] (arch_cpu_idle+0x20/0x3c) [ 4.346180] [<c0109508>] (arch_cpu_idle) from [<c015ed70>] (do_idle+0x1bc/0x2bc) [ 4.353594] [<c015ed70>] (do_idle) from [<c015f204>] (cpu_startup_entry+0x18/0x1c) [ 4.361183] [<c015f204>] (cpu_startup_entry) from [<c1200e68>] (start_kernel+0x440/0x504) [ 4.369378] [<c1200e68>] (start_kernel) from [<00000000>] (0x0) [ 4.375309] handlers: [ 4.377645] [<62052c0d>] st_lsm6dsx_handler_irq threaded [<f2004b92>] st_lsm6dsx_handler_thread [ 4.386484] Disabling IRQ #277 Here is the associated device tree node: lsm9ds1_ag@6a { compatible = "st,lsm9ds1-imu"; reg = <0x6a>; st,drdy-int-pin = <1>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_acc_gyro>; interrupt-parent = <&gpio7>; interrupts = <13 IRQ_TYPE_LEVEL_LOW>; }; Let me know if I can provide any more information. Thanks, Bobby Jones