xpcs_create_fwnode(9)

✨ xpcs_create_fwnode ✨

okay so this is a page from the Kernel API Manual bestie — it's xpcs_create_fwnode(9), and it's literally the "make me a DW xPCS out of this fwnode" moment 🎀

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💖 NAME

xpcs_create_fwnode — spin up a DW xPCS instance from @fwnode ✨

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🦋 SYNOPSIS

struct dw_xpcs * xpcs_create_fwnode (struct fwnode_handle *fwnode );

like... one function, one argument, one iconic struct pointer 💅

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🌸 ARGUMENTS

• fwnode — the fwnode handle that's pointing at the DW XPCS device 🫶 that's it, that's the whole input, she's low maintenance

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👑 RETURN

so here's the vibe check on what you get back 🌈

• a pointer to the DW XPCS handle if successful — slay, you're done 💖
• -ENODEV if the fwnode device is unavailable, or if the PCS device couldn't be found on the bus 😭
• -EPROBE_DEFER if the respective MDIO-device instance couldn't be found — not a no, just a "not yet" bestie ⭐
• other negative errno values related to the data allocations and MDIO-bus communications 💀

ngl the negative errno ones are giving "something went sideways in the plumbing" — allocations and MDIO-bus comms are where they come from, no cap 🙈

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🔥 SEE ALSO

• Kernel file ./drivers/net/pcs/pcs-xpcs.c 📁
• xpcs_config_eee_mult_fact(9)
• xpcs_create_mdiodev(9)

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and that's the whole page, bestie — main character energy from the ./drivers/net/pcs directory, dated October 2026 💜 go forth and probe ur PCS devices responsibly ✨🧚