mxl86110_read_extended_reg(9)

💅 mxl86110_read_extended_reg(9) — the Kernel API Manual, but make it make sense

okay so bestie, welcome to the Kernel API Manual, section 9 (that's the kernel-functions girlies 🌸). Today's main character is mxl86110_read_extended_reg, and no cap, she is literally just here to read a register for you. Let's get into it 🫶

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✨ NAME ✨

mxl86110_read_extended_reg — read a PHY's extended register. that's it. that's the whole job. iconic behaviour, honestly 👑

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🎀 SYNOPSIS 🎀

int mxl86110_read_extended_reg (struct phy_device *phydev , u16 regnum );

copy it exactly, don't @ me 💅

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🦋 ARGUMENTS 🦋

• phydev — pointer to the PHY device structure. yes queen, she needs to know which PHY we're talking to 🧚
• regnum — the extended register number to read. tell her which one and she'll go get it ✨

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🌈 DESCRIPTION 🌈

so what does she actually do? she reads from an extended register of the PHY using the MaxLinear two-step access method (that's reg 0x1E/0x1F, iykyk). her party trick: she handles acquiring and releasing the MDIO bus lock internally, all by herself, so you don't have to think about it 🫶 lock in, lock out, no drama, periodt.

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🔥 RETURN 🔥

on success you get the 16-bit register value back 💖. on failure you get a negative errno code — so like, check for that, bestie, don't just vibe with a negative number 😭

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/net/phy/mxl-86110.c — the source, go read her 📖
• __mxl86110_write_extended_reg(9)
• __mxl86110_read_extended_reg(9)
• __mxl86110_modify_extended_reg(9)
• mxl86110_write_extended_reg(9)
• mxl86110_modify_extended_reg(9)
• mxl86110_get_wol(9)
• mxl86110_set_wol(9)
• mxl86110_synce_clk_cfg(9)
• mxl86110_broadcast_cfg(9)
• mxl86110_enable_led_activity_blink(9)
• mxl86110_config_rgmii_delay(9)
• mxl86110_config_init(9)
• mxl86111_probe(9)
• mxl86111_config_init(9)
• mxl86111_read_page(9)
• mxl86111_write_page(9)

the whole extended-register friend group ate, ngl 🔥

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lowkey a whole squad of mxl86110_* and mxl86111_* functions, and every single one is worth a read. main character energy across the board 👑

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okay that's the page!! 🎀 this lil' baddie lives over in ./drivers/net/phy, she's dated October 2026, and she's filed under mxl86110_read_extended_reg(9) in the Kernel API Manual. go forth and read those extended registers, bestie — slay 💜🦋✨