pinconf_gen...se_dt_pinmux(9)

💅 pinconf_gen...se_dt_pinmux — from the Kernel API Manual, bestie

okay so first thing, the title of this whole thing is pinconf_gen...se_dt_pinmux(9) and it lives in the Kernel API Manual, and yes the function name is genuinely that long — it got abbreviated in the header because even the manpage was like "bestie I cannot". the full name is in the NAME section below, we're getting there 🫶

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✨ NAME ✨

pinconf_generic_parse_dt_pinmux — and that's it. that's the whole entry. no little dash-description, no tagline, nothing. she gave us the name and left the chat 💀 (so fr fr, everything you need is in DESCRIPTION, keep scrolling)

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🌸 SYNOPSIS 🌸

int pinconf_generic_parse_dt_pinmux (struct device_node *np , struct device *dev , unsigned int **pid , unsigned int **pmux , unsigned int *npins );

it returns an int, it takes five things, and it's giving "trust me I know what I'm doing" main character energy 👑

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🎀 ARGUMENTS 🎀

• np — the node that's holding the pinmux properties. this is the source of truth, the one with the goods 📦
• dev — the pincontrol core device. hi bestie, say hi to the core device 👋
• pid — an array with pin identity entries. the "who am I" of each pin 💅
• pmux — an array with pin mux value entries. the "what am I doing" of each pin ✨
• npins — the number of pins. the headcount, the guest list, the vibe check on how many we're dealing with 🔢

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🦋 DESCRIPTION 🦋

so what does she actually do? she parses the pinmux properties into generic pin mux values. that's the whole job. clean, simple, iconic 🌈

and here's the part you're gonna wanna screenshot — the pinmux property layout:

• mux value → bits [0,7]
• pin identity → bits [8,31]

ikr?? the low bits are the mux value and the high bits are the pin identity, all packed into one number together like they're sharing a twin bed 🙈 so [0,7] is your first byte for the mux, and [8,31] is everything above it for the identity. no cap, that's the spec, write it down 📝

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/pinctrl/pinconf-generic.c — the actual source, go read her 👀
• pinconf_generic_dump_pins(9)
• parse_fw_cfg(9)
• pinconf_generic_parse_dt_config(9)

all four, all linked, go click around, that's your homework for tonight 🍓

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and that's the page, bestie!! 💜 she's filed under ./drivers/pinctrl, she's dated October 2026, and she came to us from the Kernel API Manual — go forth and parse those pinmux properties, you're gonna slay 🎀✨👑