yt8521_config_aneg(9)

💅 yt8521_config_aneg(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes, THE Kernel API Manual, we're in the big leagues now 🎀 this one's a little function page for yt8521_config_aneg, and ngl she's short but she's mighty. let's get into it ✨

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🌸 NAME 🌸

yt8521_config_aneg — change reg space then call yt8521_config_aneg_paged

that's the whole gig, that's the assignment, she swaps the register space and then hands things off to yt8521_config_aneg_paged. queen behavior, no notes 👑

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✨ SYNOPSIS ✨

int yt8521_config_aneg (struct phy_device *phydev );

like, the signature. right there. copy it exactly if you're writing code, bestie, don't freestyle it 🙈

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🦋 ARGUMENTS 🦋

• phydev — a pointer to a struct phy_device 💖 that's it, that's the one (1) argument, and it's a pointer to a struct phy_device. she's simple, she's clean, she's iconic.

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💜 DESCRIPTION 💜

okay so what does she do, what does she *return*…

returns 0 or negative errno code

and that's genuinely the entire description 😭 no cap. zero means slay, got it, everything's fine ✅ negative errno code means something went sideways and you should go check your errno, fr fr 💀

(and remember from the NAME up top: it changes reg space, then calls yt8521_config_aneg_paged — the whole pipeline, iykyk 🧚)

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🌈 SEE ALSO 🌈

bestie. bestie. there are SO many siblings. this function has the biggest family group chat in ./drivers/net/phy/motorcomm.c — here's the whole crew, all of them, in order, no one left out 🫶

• ytphy_read_ext(9)
• ytphy_read_ext_with_lock(9)
• ytphy_write_ext(9)
• ytphy_write_ext_with_lock(9)
• ytphy_modify_ext(9)
• ytphy_modify_ext_with_lock(9)
• ytphy_get_wol(9)
• ytphy_set_wol(9)
• yt8521_read_page(9)
• yt8521_write_page(9)
• struct ytphy_cfg_reg_map(9)
• struct ytphy_ldo_vol_map(9)
• yt8521_probe(9)
• ytphy_utp_read_lpa(9)
• yt8521_adjust_status(9)
• yt8521_read_status_paged(9)
• yt8521_read_status(9)
• yt8521_modify_bmcr_paged(9)
• yt8521_modify_utp_fiber_bmcr(9)
• yt8521_soft_reset(9)
• yt8521_suspend(9)
• yt8521_resume(9)
• yt8521_config_init(9)
• yt8531_link_change_notify(9)
• yt8521_prepare_fiber_features(9)
• yt8521_fiber_setup_forced(9)
• ytphy_check_and_restart_aneg(9)
• yt8521_fiber_config_aneg(9)
• ytphy_setup_master_slave(9)
• ytphy_utp_config_advert(9)
• ytphy_utp_config_aneg(9)
• yt8521_config_aneg_paged(9)
• yt8521_aneg_done_paged(9)
• yt8521_aneg_done(9)
• ytphy_utp_read_abilities(9)
• yt8521_get_features_paged(9)
• yt8521_get_features(9)
• yt8821_get_features(9)
• yt8821_get_rate_matching(9)
• yt8821_aneg_done(9)
• yt8821_serdes_init(9)
• yt8821_utp_init(9)
• yt8821_auto_sleep_config(9)
• yt8821_soft_reset(9)
• yt8821_config_init(9)
• yt8821_adjust_status(9)
• yt8821_update_interface(9)
• yt8821_read_status(9)
• yt8821_modify_utp_fiber_bmcr(9)
• yt8821_suspend(9)
• yt8821_resume(9)

fifty-one entries. FIFTY-ONE. she said "my support system is unmatched" and honestly? she's right 💅🔥

don't forget the actual source file lives at ./drivers/net/phy/motorcomm.c in the Kernel file — that's where all this magic is at, bestie 🍓

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mwah, that's the page 🫶 this little baddie comes to you straight from the kernel source tree at ./drivers/net/phy, dated October 2026, and it's filed under Kernel API Manual — go forth and call her responsibly, and remember: 0 is good, negative errno is a vibe check you failed 💀✨💖