Hi,
Could you test to see if those lines to explicitly set VI6_DISP_IRQ_ENB and VI6_WPF_IRQ_ENB are really needed in your use case please?
Commenting out those register writes causes [ 2.275137][ C0] irq 188: nobody cared (try booting with the "irqpoll" option) [ 2.282621][ C0] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.0-rc5 #28 [ 2.289669][ C0] Hardware name: Renesas H3ULCB Kingfisher board based on r8a77951 (DT) [ 2.297844][ C0] Call trace: [ 2.300981][ C0] dump_backtrace+0x0/0x198 [ 2.305348][ C0] show_stack+0x1c/0x28 [ 2.309357][ C0] dump_stack_lvl+0x64/0x7c [ 2.313718][ C0] dump_stack+0x14/0x2c [ 2.317725][ C0] __report_bad_irq+0x50/0xdc [ 2.322254][ C0] note_interrupt+0x2e4/0x330 [ 2.326786][ C0] handle_irq_event_percpu+0x58/0x68 [ 2.331927][ C0] handle_irq_event+0x4c/0x98 [ 2.336456][ C0] handle_fasteoi_irq+0xd0/0x180 [ 2.341245][ C0] handle_domain_irq+0x94/0xd8 [ 2.345862][ C0] gic_handle_irq+0xa4/0xe0 [ 2.350216][ C0] do_interrupt_handler+0x38/0x60 [ 2.355093][ C0] el1_interrupt+0x2c/0x68 [ 2.359362][ C0] el1h_64_irq_handler+0x14/0x20 [ 2.364151][ C0] el1h_64_irq+0x74/0x78 [ 2.368244][ C0] __do_softirq+0xc8/0x404 [ 2.372511][ C0] irq_exit+0x118/0x140 [ 2.376521][ C0] handle_domain_irq+0x98/0xd8 [ 2.381137][ C0] gic_handle_irq+0xa4/0xe0 [ 2.385490][ C0] call_on_irq_stack+0x28/0x3c [ 2.390105][ C0] do_interrupt_handler+0x54/0x60 [ 2.394981][ C0] el1_interrupt+0x2c/0x68 [ 2.399247][ C0] el1h_64_irq_handler+0x14/0x20 [ 2.404036][ C0] el1h_64_irq+0x74/0x78 [ 2.408129][ C0] _raw_spin_unlock_irqrestore+0x20/0x50 [ 2.413615][ C0] __setup_irq+0x56c/0x888 [ 2.417882][ C0] request_threaded_irq+0xf0/0x1a8 [ 2.422843][ C0] devm_request_threaded_irq+0x84/0xf8 [ 2.428155][ C0] vsp1_probe+0x218/0xb48 [ 2.432340][ C0] platform_probe+0x6c/0xd8 [ 2.436700][ C0] really_probe+0xc0/0x428 [ 2.440967][ C0] __driver_probe_device+0x114/0x188 [ 2.446103][ C0] driver_probe_device+0x44/0xe8 [ 2.450891][ C0] __driver_attach+0xbc/0x1a0 [ 2.455419][ C0] bus_for_each_dev+0x64/0xa0 [ 2.459947][ C0] driver_attach+0x28/0x30 [ 2.464215][ C0] bus_add_driver+0x144/0x228 [ 2.468743][ C0] driver_register+0x68/0x118 [ 2.473272][ C0] __platform_driver_register+0x2c/0x38 [ 2.478669][ C0] vsp1_platform_driver_init+0x20/0x28 [ 2.483985][ C0] do_one_initcall+0x38/0x258 [ 2.488513][ C0] kernel_init_freeable+0x228/0x28c [ 2.493565][ C0] kernel_init+0x28/0x120 [ 2.497745][ C0] ret_from_fork+0x10/0x20 [ 2.502013][ C0] handlers: [ 2.504974][ C0] [<0000000040be598b>] vsp1_irq_handler [ 2.510376][ C0] Disabling IRQ #188 Nikita
