ENUM MUX_FIRST_REG(9)

💅 enum mux_first_reg(9) — like, the whole vibe of the FIRST register, explained

okay bestie, so this page lives in the Kernel API Manual and it's all about enum mux_first_reg — yep, it literally defines the modes of access of the FIRST register. iconic behavior, honestly. that's the NAME section, we're done with it, slay 💖

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✨ SYNOPSIS ✨

here's the whole thing, exactly as it is, no cap:

enum mux_first_reg {
    mux_f_mux ,
    mux_f_gpio ,
    mux_f_keep

};

look at her. three constants. zero drama. we love a concise queen 🎀

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🌸 Constants 🌸

okay so these are the three little options, and each one is doing something very specific — let me break it down:

• mux_f_mux — sets the corresponding pin to a fully-pinmux pin. like, committing to the mux life, fully.
• mux_f_gpio — sets the corresponding pin to a GPIO or IOP pin. different path, still valid, we respect it 🫶
• mux_f_keep — don't change it. keep it intact. leave her alone. she's fine. (this is the "no thoughts, just vibes" option ngl)

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👑 SEE ALSO 👑

go look at the kernel file ./drivers/pinctrl/sunplus/sppctl.h — that's where all the lore lives. and while you're there, check out:

• enum mux_master_reg(9)
• enum pinmux_type(9)
• struct grp2fp_map(9)

iykyk 🌈

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bestie reminder: every constant here keeps its exact meaning — mux_f_keep really does mean don't change (keep intact), so don't go touching pins that told you they're fine 💀

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and that's the page!! mwah 💜 this little gem comes from ./drivers/pinctrl/sunplus, dated October 2026 — and the man page itself is enum mux_first_reg(9), obviously, she's the main character ⭐ 🦋