timer_of_irq_init(9)

✨ timer_of_irq_init(9) ✨

okay so bestie, you found yourself in the Kernel API Manual 💖 and this one is literally all about requesting the interrupt. no cap, that's the whole vibe. let's get into it 🎀

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🌸 NAME 🌸

timer_of_irq_init — Request the interrupt 💅

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🦋 SYNOPSIS 🦋

int timer_of_irq_init (struct device_node *np , struct of_timer_irq
*of_irq );

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👑 ARGUMENTS 👑

• np — a device tree node pointer 🌳
• of_irq — an of_timer_irq structure pointer ✨

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💜 DESCRIPTION 💜

So what it does is: it gets the interrupt number from the DT (that's the device tree, iykyk) from its definition, and then it requests it. iconic behaviour, honestly 🫶

The interrupt is gotten by falling back the following way — like, it tries these in order:

• Get interrupt number by name 🏷️
• Get interrupt number by index 🔢

Returns 0 on success, < 0 otherwise 😭

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🌈 SEE ALSO 🌈

Kernel file ./drivers/clocksource/timer-of.c plus the whole squad:

• timer_of_irq_exit(9)
• timer_of_clk_exit(9)
• timer_of_clk_init(9)
• timer_of_cleanup(9)

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that's the whole page, bestie — no notes, it ate 💅

sign-off szn: this was the ./drivers/clocksource drop, dated October 2026, and yeah the footer says timer_of_irq_init(9) again because the kernel loves a callback 🎀✨