lan937x_tx_read_mdix_status(9)

💅 lan937x_tx_read_mdix_status(9) 💅

okay so bestie, we're in the Kernel API Manual today and this page is literally all about lan937x_tx_read_mdix_status — the little function that goes and peeks at the MDIX status for the LAN937x TX PHY. yes that's a whole lot of acronyms, stay with me 🫶

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✨ NAME ✨

lan937x_tx_read_mdix_status — reads the MDIX status for the LAN937x TX PHY, no cap 🌸

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🎀 SYNOPSIS 🎀

int lan937x_tx_read_mdix_status (struct phy_device *phydev );

like, that's the whole signature. int in, magic happens, int out. iconic behavior honestly 💖

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🦋 ARGUMENTS 🦋

• phydev — Pointer to the phy_device structure. that's the vibe check we're handed, and it's where all the results end up getting written 🧚

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⭐ DESCRIPTION ⭐

okay so here's what's actually happening 🔥 — this function reads the MDIX status of the LAN937x TX PHY and then sets the mdix_ctrl and mdix fields of the phy_device structure accordingly. so like, it's not just reading for fun, it's reading and updating your struct. multitasking queen 👑

⚠️ but bestie, important caveat: MDIX status is not supported in AUTO mode, and it will be set to invalid in such cases. so don't come for her when AUTO mode gives you an invalid result — she told you upfront 💀

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🌈 RETURN 🌈

• 0 on success 🎉
• a negative error code on failure 😭 (yes negative, she's dramatic like that)

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👑 SEE ALSO 👑

• Kernel file ./drivers/net/phy/microchip.c
• lan937x_tx_read_status(9)
• lan937x_tx_set_mdix(9)
• lan937x_tx_config_aneg(9)

go read those too, iykyk 🦋

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and that's the whole page, bestie 💜 huge shoutout to the source/version line — this one lives at ./drivers/net/phy and it's dated October 2026. periodt, see you at the next manpage 💅✨🎀