ice_start_phy_timer_e82x(9)

💅 ice_start_phy_timer_e82x(9) — Kernel API Manual 🎀

okay so bestie, we're in the Kernel API Manual today and the vibe is very "Intel ICE driver, PTP hardware clock, precision timestamps." stay with me, it's actually iconic.

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✨ NAME ✨

ice_start_phy_timer_e82x — start the PHY clock timer 🌸

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🦋 SYNOPSIS 🦋

int ice_start_phy_timer_e82x (struct ice_hw *hw , u8 port );

like, that's the whole signature. short and slay.

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🌈 ARGUMENTS 🌈

• hw — pointer to the HW struct 🫶 like, the hardware context, she needs to know which silicon we're talking to
• port — the PHY port to start ✨ literally just. the port. the one to start.

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👑 DESCRIPTION 👑

Start the clock of a PHY port. periodt. 💅

This is not a "do it whenever" situation — this has to happen as part of the flow to re-calibrate Tx and Rx timestamping offsets whenever:

• the clock time is initialized ⏰, or
• the link speed changes 🔄

Hardware will take Vernier measurements on Tx or Rx of packets. that's the whole point, no cap 🧚

real talk though: this is a step in a flow, not a solo main-character move. she runs when the clock gets initialized or when the link speed flips. that's the assignment.

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🔥 SEE ALSO 🔥

starting with the kernel file this lives in:

./drivers/net/ethernet/intel/ice/ice_ptp_hw.c

and then… okay. buckle up. this is the friend group. all of them named exactly like this, i'm not touching a single underscore 💀

ice_get_ptp_src_clock_index(9), ice_ptp_read_src_incval(9),
ice_ptp_tmr_cmd_to_src_reg(9), ice_ptp_tmr_cmd_to_port_reg(9),
ice_ptp_src_cmd(9), ice_ptp_exec_tmr_cmd(9), ice_ptp_cfg_sync_delay(9),
ice_ptp_init_phc_e825c(9), ice_ptp_get_dest_dev_e825(9),
ice_write_phy_eth56g(9), ice_read_phy_eth56g(9),
ice_get_serdes_ref_sel_e825c(9), ice_phy_res_address_eth56g(9),
ice_write_port_eth56g(9), ice_read_port_eth56g(9),
ice_write_ptp_reg_eth56g(9), ice_write_mac_reg_eth56g(9),
ice_write_xpcs_reg_eth56g(9), ice_read_ptp_reg_eth56g(9),
ice_read_mac_reg_eth56g(9), ice_read_gpcs_reg_eth56g(9),
ice_read_port_mem_eth56g(9), ice_write_port_mem_eth56g(9),
ice_write_quad_ptp_reg_eth56g(9), ice_read_quad_ptp_reg_eth56g(9),
ice_is_64b_phy_reg_eth56g(9), ice_is_40b_phy_reg_eth56g(9),
ice_read_64b_phy_reg_eth56g(9), ice_read_64b_ptp_reg_eth56g(9),
ice_write_40b_phy_reg_eth56g(9), ice_write_40b_ptp_reg_eth56g(9),
ice_write_64b_phy_reg_eth56g(9), ice_write_64b_ptp_reg_eth56g(9),
ice_read_ptp_tstamp_eth56g(9), ice_clear_ptp_tstamp_eth56g(9),
ice_ptp_reset_ts_memory_eth56g(9), ice_ptp_prep_port_time_eth56g(9),
ice_ptp_prep_phy_time_eth56g(9), ice_ptp_prep_port_adj_eth56g(9),
ice_ptp_prep_phy_adj_eth56g(9), ice_ptp_prep_phy_incval_eth56g(9),
ice_ptp_read_port_capture_eth56g(9), ice_ptp_write_port_cmd_eth56g(9),
ice_phy_get_speed_eth56g(9), ice_phy_cfg_parpcs_eth56g(9),
ice_phy_cfg_ptp_1step_eth56g(9), mul_u32_u32_fx_q9(9),
add_u32_u32_fx(9), ice_ptp_calc_bitslip_eth56g(9),
ice_ptp_calc_deskew_eth56g(9), ice_phy_set_offsets_eth56g(9),
ice_phy_cfg_mac_eth56g(9), ice_phy_cfg_intr_eth56g(9),
ice_read_phy_and_phc_time_eth56g(9), ice_sync_phy_timer_eth56g(9),
ice_stop_phy_timer_eth56g(9), ice_start_phy_timer_eth56g(9),
ice_check_phy_tx_tstamp_ready_eth56g(9),
ice_ptp_read_tx_hwtstamp_status_eth56g(9),
ice_ptp_phy_soft_reset_eth56g(9), ice_get_phy_tx_tstamp_ready_eth56g(9),
ice_ptp_init_phy_e825(9), ice_fill_phy_msg_e82x(9),
ice_is_64b_phy_reg_e82x(9), ice_is_40b_phy_reg_e82x(9),
ice_read_phy_reg_e82x(9), ice_read_64b_phy_reg_e82x(9),
ice_write_phy_reg_e82x(9), ice_write_40b_phy_reg_e82x(9),
ice_write_64b_phy_reg_e82x(9), ice_fill_quad_msg_e82x(9),
ice_read_quad_reg_e82x(9), ice_write_quad_reg_e82x(9),
ice_read_phy_tstamp_e82x(9), ice_clear_phy_tstamp_e82x(9),
ice_ptp_reset_ts_memory_quad_e82x(9), ice_ptp_reset_ts_memory_e82x(9),
ice_ptp_set_vernier_wl(9), ice_ptp_init_phc_e82x(9),
ice_ptp_prep_phy_time_e82x(9), ice_ptp_prep_port_adj_e82x(9),
ice_ptp_prep_phy_adj_e82x(9), ice_ptp_prep_phy_incval_e82x(9),
ice_ptp_read_port_capture(9), ice_ptp_write_port_cmd_e82x(9),
ice_phy_get_speed_and_fec_e82x(9), ice_phy_cfg_lane_e82x(9),
ice_phy_cfg_uix_e82x(9), ice_phy_cfg_parpcs_e82x(9),
ice_calc_fixed_tx_offset_e82x(9), ice_phy_cfg_tx_offset_e82x(9),
ice_phy_calc_pmd_adj_e82x(9), ice_calc_fixed_rx_offset_e82x(9),
ice_phy_cfg_rx_offset_e82x(9), ice_ptp_clear_phy_offset_ready_e82x(9),
ice_read_phy_and_phc_time_e82x(9), ice_sync_phy_timer_e82x(9),
ice_stop_phy_timer_e82x(9), ice_get_phy_tx_tstamp_ready_e82x(9),
ice_check_phy_tx_tstamp_ready_e82x(9), ice_phy_cfg_intr_e82x(9),
ice_ptp_init_phy_e82x(9), ice_read_phy_reg_e810(9),
ice_write_phy_reg_e810(9), ice_read_phy_tstamp_ll_e810(9),
ice_read_phy_tstamp_sbq_e810(9), ice_read_phy_tstamp_e810(9),
ice_clear_phy_tstamp_e810(9), ice_ptp_init_phc_e810(9),
ice_ptp_prep_phy_time_e810(9), ice_ptp_prep_phy_adj_ll_e810(9),
ice_ptp_prep_phy_adj_e810(9), ice_ptp_prep_phy_incval_ll_e810(9),
ice_ptp_prep_phy_incval_e810(9), ice_ptp_port_cmd_e810(9),
ice_get_phy_tx_tstamp_ready_e810(9),
ice_check_phy_tx_tstamp_ready_e810(9), ice_read_sma_ctrl(9),
ice_write_sma_ctrl(9), ice_ptp_read_sdp_ac(9), ice_ptp_init_phy_e810(9),
ice_ptp_init_phc_e830(9), ice_ptp_write_direct_incval_e830(9),
ice_ptp_write_direct_phc_time_e830(9), ice_ptp_port_cmd_e830(9),
ice_read_phy_tstamp_e830(9), ice_get_phy_tx_tstamp_ready_e830(9),
ice_check_phy_tx_tstamp_ready_e830(9), ice_ptp_init_phy_e830(9),
ice_ptp_lock(9), ice_ptp_unlock(9), ice_ptp_init_hw(9),
ice_ptp_write_port_cmd(9), ice_ptp_one_port_cmd(9), ice_ptp_port_cmd(9),
ice_ptp_tmr_cmd(9), ice_ptp_init_time(9), ice_ptp_write_incval(9),
ice_ptp_write_incval_locked(9), ice_ptp_adj_clock(9),
ice_read_phy_tstamp(9), ice_clear_phy_tstamp(9), ice_get_pf_c827_idx(9),
ice_ptp_reset_ts_memory(9), ice_ptp_init_phc(9),
ice_get_phy_tx_tstamp_ready(9), ice_check_phy_tx_tstamp_ready(9),
ice_cgu_get_pin_desc_e823(9), ice_cgu_get_pin_desc(9),
ice_cgu_get_num_pins(9), ice_cgu_get_pin_type(9),
ice_cgu_get_pin_freq_supp(9), ice_cgu_get_pin_name(9),
ice_get_cgu_state(9), ice_get_cgu_rclk_pin_info(9),
ice_cgu_get_output_pin_state_caps(9)

like… that's the family reunion 😭 every single one of them is here and yes i listed all of them, i would never do you like that.

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🎀 the cute sign-off 🎀

this little love letter lives in ./drivers/net/ethernet/intel/ice 🌸 dated October 2026, and it goes by ice_start_phy_timer_e82x(9). mwah. go start that timer bestie 💖✨