yt8821_get_features(9)

💅 yt8821_get_features — like, the whole vibe ✨

okay so bestie, welcome to the kernel API manual for yt8821_get_features 🎀 (yes that's a section 9 page, kernel internals, very main character of it). Sit down, grab a strawberry drink 🍓, and let's get into it.

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✨ NAME ✨

yt8821_get_features — reads the mmd register to get the 2.5G capability. that's it, that's the whole job 💖 no cap, it just peeks at a register and tells you what the hardware can do.

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🌸 SYNOPSIS 🌸

int yt8821_get_features (struct phy_device *phydev );

literally one argument, one return, iconic minimalism 🫶

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🦋 ARGUMENTS 🦋

• phydev — the target phy_device struct 💫 like, the phy you're asking about. hand it over and it does its thing.

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⭐ RETURN ⭐

Returns 0 or a negative errno code. so like, zero = slay, negative = something went sideways and you get an errno to tell you why 😭

ngl, this is the whole contract — don't go expecting extra fancy return values, because there aren't any.

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🔥 SEE ALSO 🔥

the friend group 🫶 — and before you say anything, yes, everyone showed up:

• Kernel file ./drivers/net/phy/motorcomm.c
• 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_config_aneg(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_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)

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that's a wrap, bestie 🧚 source/version lives at ./drivers/net/phy, dated October 2026 — go off, read the 2.5G bits, and remember: iykyk 💜