phy_clear_bits(9)

💅 phy_clear_bits(9) — Kernel API Manual, bestie edition 🎀

okay so picture this: you're deep in the kernel, you're living in phy_clear_bits(9) land, and the manual is literally called Kernel API Manual. yeah. that's the vibe. let's get into it ✨

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🌸 NAME 🌸

phy_clear_bits — the convenience function for clearing bits in a PHY register. that's it. that's the whole gig. lowkey iconic for how simple it is 🫶

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✨ SYNOPSIS ✨

int phy_clear_bits (struct phy_device *phydev , u32 regnum , u16 val );

she takes three things and hands you back an int. no cap, that's the whole signature 💅

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🦋 ARGUMENTS 🦋

• phydev — the phy_device struct. your main character, fr fr. this is the device you're messing with 🧚
• regnum — register number to write. this is where you're going 💫
• val — bits to clear. this is what you're yeeting out of there 🙈

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🔥 SEE ALSO 🔥

okay bestie, buckle up, because this list is long and I am obsessed with how thorough it is. every single one of these, no skipping, periodt 💀

First up, the kernel file itself — that's Kernel file ./include/linux/phy.h, and the whole squad that lives near it:

• enum phy_interface_t(9)
• phy_modes(9)
• rgmii_clock(9)
• struct mdio_bus_stats(9)
• struct mii_bus(9)
• mdiobus_alloc(9)
• enum phy_state(9)
• struct phy_c45_device_ids(9)
• struct phy_oatc14_sqi_capability(9)
• struct phy_device(9)
• struct phy_tdr_config(9)
• enum link_inband_signalling(9)
• struct phy_plca_cfg(9)
• struct phy_plca_status(9)
• struct phy_led(9)
• struct phy_mse_capability(9)
• struct phy_mse_snapshot(9)
• struct phy_driver(9)
• phy_id_compare(9)
• phy_id_compare_vendor(9)
• phy_id_compare_model(9)
• phydev_id_compare(9)
• phy_is_started(9)
• phy_driver_is_genphy(9)
• phy_disable_eee_mode(9)
• phy_can_wakeup(9)
• phy_may_wakeup(9)
• phy_read(9)
• __phy_read(9)
• phy_write(9)
• __phy_write(9)
• __phy_modify_changed(9)
• phy_read_mmd_poll_timeout(9)
• __phy_set_bits(9)
• __phy_clear_bits(9)
• phy_set_bits(9)
• __phy_set_bits_mmd(9)
• __phy_clear_bits_mmd(9)
• phy_set_bits_mmd(9)
• phy_clear_bits_mmd(9)
• phy_interrupt_is_valid(9)
• phy_polling_mode(9)
• phy_has_hwtstamp(9)
• phy_has_rxtstamp(9)
• phy_has_tsinfo(9)
• phy_has_txtstamp(9)
• phy_is_default_hwtstamp(9)
• phy_on_sfp(9)
• phy_interface_mode_is_rgmii(9)
• phy_interface_mode_is_8023z(9)
• phy_interface_is_rgmii(9)
• phy_is_pseudo_fixed_link(9)
• phy_module_driver(9)

like… fifty-three entries. she ate and left no crumbs 👑 ngl if you read all of these you're basically a PHY scholar at this point 🌈

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real talk though: phy_clear_bits is your convenience wrapper — the manual says so right in the NAME section — so if you're reaching for it, you probably already know what you're doing. slay 💖

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and that's the whole page, bestie!! this icon came from ./include/linux and the version stamp on it is October 2026 — so when you cite it, cite it with love 🎀 bye pookie, go clear some bits 💜