phy_speed_up(9)

💖 phy_speed_up(9) 💖

Okay bestie, welcome to the Kernel API Manual page for phy_speed_up(9) — this one is short and sweet, but the SEE ALSO list is giving full squad energy. 🫶

✨ NAME ✨

phy_speed_up — (re)set advertised speeds to all supported speeds 💅

🌸 SYNOPSIS 🌸

int phy_speed_up (struct phy_device *phydev );

🎀 ARGUMENTS 🎀

• phydev — the phy_device struct. That’s the main character this function is working with, no cap.

🦋 DESCRIPTION 🦋

So here’s the tea: phy_speed_up() is used to revert the effect of phy_speed_down. It’s literally the “put it back” bestie to that whole situation — the NAME says it’s for (re)setting advertised speeds to all supported speeds, and that’s the vibe. ✨

No drama, no extra plot twists — just the documented behavior, periodt. 💖

🔥 SEE ALSO 🔥

Kernel file: ./drivers/net/phy/phy.c — and here’s the entire friend group you can go read next, in the original order:

phy_print_status(9), phy_get_rate_matching(9), phy_config_interrupt(9), phy_restart_aneg(9), phy_aneg_done(9), phy_supported_speeds(9), phy_check_valid(9), phy_sanitize_settings(9), phy_mii_ioctl(9), phy_do_ioctl(9), phy_do_ioctl_running(9), __phy_hwtstamp_get(9), __phy_hwtstamp_set(9), phy_queue_state_machine(9), phy_trigger_machine(9), phy_ethtool_get_strings(9), phy_ethtool_get_sset_count(9), phy_ethtool_get_stats(9), __phy_ethtool_get_phy_stats(9), __phy_ethtool_get_link_ext_stats(9), phy_ethtool_get_plca_cfg(9), plca_check_valid(9), phy_ethtool_set_plca_cfg(9), phy_ethtool_get_plca_status(9), phy_start_cable_test(9), phy_start_cable_test_tdr(9), phy_check_link_status(9), phy_inband_caps(9), phy_config_inband(9), _phy_start_aneg(9), phy_start_aneg(9), phy_speed_down(9), phy_start_machine(9), phy_stop_machine(9), phy_error(9), phy_write_barrier(9), phy_disable_interrupts(9), phy_interrupt(9), phy_enable_interrupts(9), phy_update_stats(9), phy_request_interrupt(9), phy_free_interrupt(9), phy_get_next_update_time(9), phy_state_machine(9), phy_stop(9), phy_start(9), phy_mac_interrupt(9), phy_loopback(9), phy_eee_tx_clock_stop_capable(9), phy_eee_rx_clock_stop(9), phy_init_eee(9), phy_get_eee_err(9), phy_ethtool_get_eee(9), phy_ethtool_set_eee_noneg(9), phy_ethtool_set_eee(9), phy_ethtool_set_wol(9), phy_ethtool_get_wol(9), phy_ethtool_nway_reset(9)

mwah 💋 — this page is sourced from ./drivers/net/phy and dated October 2026.