dmtimer_write(9)

✨ NAME ✨

Okay bestie, welcome to the dmtimer_write(9) page from the Kernel API Manual 💖 — and the name is literally the whole plot: dmtimer_write writes timer registers in posted and non-posted mode. No cap.

🌸 SYNOPSIS 🌸

void dmtimer_write (struct dmtimer *timer , u32 reg , u32 val );

💅 ARGUMENTS 💅

• timer — the timer pointer over which the write operation is to perform. That's your main character timer 👑.
• reg — the lowest byte holds the register offset. Just the lowest byte, okay? Don't go thinking the whole thing is the offset 🙈.
• val — the data to write into the register. This is the actual payload you're dropping in 🎀.

🦋 DESCRIPTION 🦋

So the posted mode bit is encoded in reg — it's literally packed in there, bestie. That means the mode vibe is part of the register value you're passing.

⚠️ In posted mode, the write pending bit must be checked. Otherwise, a write on a register which has a pending write will be lost. Like, gone gone 😭💀. Do not skip the pending-bit vibe check, fr fr.

🎀 SEE ALSO 🎀

Go give these a read too, bestie:

• Kernel file ./drivers/clocksource/timer-ti-dm.c
• dmtimer_read(9)
• omap_dm_timer_request_by_node(9)
• omap_dm_timer_modify_idlect_mask(9)
• omap_dm_timer_set_int_disable(9)
• omap_dm_timer_cap_counter(9)
• omap_dm_timer_probe(9)
• omap_dm_timer_remove(9)

Signed with love from the source ./drivers/clocksource, stamped October 2026, on the dmtimer_write(9) page 🫶✨