phy_init(9)

💖 phy_init(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this is the page for phy_init — the little pre-game ritual for a phy before actual phy operation 🎀💅

🌸 NAME 🌸

phy_init — phy internal initialization before phy operation 🦋

✨ SYNOPSIS ✨

int phy_init (struct phy *phy );

🫶 ARGUMENTS 🫶

• phy — the phy returned by phy_get 👑✨

💫 DESCRIPTION 💫

okay so this one is used to allow phy's driver to perform phy internal initialization, such as PLL block powering, clock initialization, or anything that's is required by the phy to perform the start of operation 🧚🌸

and like, must be called before phy_power_on — no skipping, bestie 😭🔥 periodt.

🔥 RETURN 🔥

0 if successful, a negative error code otherwise 💀

so yeah, zero is the slay outcome; a negative error code is the “nope, something’s off” outcome 🙈

🌈 SEE ALSO 🌈

Kernel file: ./drivers/phy/phy-core.c 🦋 and the whole phy friend group:

• phy_create_lookup(9)
• phy_remove_lookup(9)
• phy_exit(9)
• phy_power_on(9)
• phy_power_off(9)
• phy_calibrate(9)
• phy_notify_connect(9)
• phy_notify_disconnect(9)
• phy_notify_state(9)
• phy_configure(9)
• phy_validate(9)
• _of_phy_get(9)
• of_phy_get(9)
• of_phy_put(9)
• phy_put(9)
• devm_phy_put(9)
• of_phy_simple_xlate(9)
• phy_get(9)
• devm_phy_get(9)
• devm_phy_optional_get(9)
• devm_of_phy_get(9)
• devm_of_phy_optional_get(9)
• devm_of_phy_get_by_index(9)
• phy_create(9)
• devm_phy_create(9)
• phy_destroy(9)
• devm_phy_destroy(9)
• __of_phy_provider_register(9)
• __devm_of_phy_provider_register(9)
• of_phy_provider_unregister(9)
• devm_of_phy_provider_unregister(9)
• phy_release(9)

sending all the love from ./drivers/phy, October 2026 💖🫶✨