ptp_clock_index_by_dev(9)

✨ NAME ✨

okay so bestie, this page is ptp_clock_index_by_dev(9), and the manual name is Kernel API Manual — iconic. ptp_clock_index_by_dev is the helper that lets you obtain the device index of a PTP clock based on the PTP device. That's the whole assignment, and it ate. 💅

🦋 SYNOPSIS 🦋

the signature is literally this, no edits:

int ptp_clock_index_by_dev (struct device *parent );

💅 ARGUMENTS 💅

• parent — the parent device (PTP device) pointer of the PTP clock. it's giving “here's the PTP device, now go get the index” energy. 🫶

🎀 RETURN 🎀

on success you get the PHC index; on failure you get -1. fr fr, that's the whole return vibe. 🌸

🌈 SEE ALSO 🌈

like, go read these too, iykyk:

• Kernel file ./include/linux/ptp_clock_kernel.h
• struct ptp_clock_request(9)
• struct ptp_system_timestamp(9)
• struct ptp_clock_info(9)
• struct ptp_clock_event(9)
• scaled_ppm_to_ppb(9)
• diff_by_scaled_ppm(9)
• adjust_by_scaled_ppm(9)
• ptp_clock_register(9)
• ptp_clock_unregister(9)
• ptp_clock_event(9)
• ptp_clock_index(9)
• ptp_clock_index_by_of_node(9)
• ptp_find_pin(9)
• ptp_find_pin_unlocked(9)
• ptp_schedule_worker(9)
• ptp_cancel_worker_sync(9)
• ptp_get_vclocks_index(9)
• ptp_convert_timestamp(9)

mwah 💖 cute little sign-off: this page's source/version is ./include/linux, the date is October 2026, and the manual page is ptp_clock_index_by_dev(9). slay. 🎀