ice_cpi_write_phy(9)

💖 NAME 💖

okay so bestie, this is the ice_cpi_write_phy(9) page from the Kernel API Manual, and it is literally here to do one iconic thing: Write a CPI port register. that’s the whole assignment, and it ate. 💅

✨ SYNOPSIS ✨

int ice_cpi_write_phy (struct ice_hw *hw , u8 phy , u32 addr , u32 val
       );

🎀 ARGUMENTS 🎀

• hw — pointer to the HW struct. yes bestie, the hardware struct, we love a direct connection. 🫶
• phy — phy index of port the CPI action is taken on. slay, very specific. ✨
• addr — PHY register address. the address bestie, keep it cute. 🎀
• val — Value to write. that’s the value going in, no cap. 💅

🌈 RETURN 🌈

• 0 on success. we love a clean win. 🦋
• other error codes when failed to write to PHY. and when it fails, it fails, bestie 😭

🦋 SEE ALSO 🦋

Kernel file: ./drivers/net/ethernet/intel/ice/ice_cpi.c

go peek at these too, iykyk:

• ice_cpi_get_dest_dev(9)
• ice_cpi_read_phy(9)
• ice_cpi_wait_req0_ack0(9)
• ice_cpi_wait_ack(9)
• ice_cpi_req0(9)
• ice_cpi_exec_cmd(9)
• ice_cpi_phy_lock(9)
• ice_cpi_exec(9)
• ice_cpi_set_cmd(9)
• ice_cpi_ena_dis_clk_ref(9)

this page came from ./drivers/net/ethernet/intel/ice, with the date stamp October 2026. mwah, bye bestie 💋💖