zynqmp_pinmux_set_mux(9)

💅 zynqmp_pinmux_set_mux(9) 💅

okay bestie so this is a page straight out of the Kernel API Manual, and honestly? it's giving "small function, big responsibilities." let's get into it 🎀

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✨ NAME ✨

zynqmp_pinmux_set_mux — the one where you set the requested function for the group. periodt. 💅

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✨ SYNOPSIS ✨

int zynqmp_pinmux_set_mux (struct pinctrl_dev *pctldev , unsigned int
function , unsigned int group );

like, that's the whole signature. no cap. 🦋

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✨ ARGUMENTS ✨

• pctldev — a pointer to your pincontrol device. like, the whole vibe of "which controller are we even talking about." 🔥
• function — the function ID. yep, just an ID. 🫶
• group — the group ID. also just an ID. iconic of them tbh. ⭐

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✨ DESCRIPTION ✨

okay so here's the tea ☕ — this function loops through all the pins of the group and calls the firmware API to set the requested function for every single pin in that group. all of them. not one, not a few, all. the way that it just goes down the list and handles each pin?? obsessed. 🌸

so like, imagine the group is a group chat, and function is the vibe everyone has to match. this function delivers the message to literally every member. no one gets left on read. 💖

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✨ RETURN ✨

• 0 on success 🎉
• otherwise? an error code. and we do NOT love that, but we respect it. 😭

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✨ SEE ALSO ✨

go look at the kernel file ./drivers/pinctrl/pinctrl-zynqmp.c — that's where the magic lives. 🧚

and while you're there, say hi to these besties:

• struct zynqmp_pmux_function(9)
• struct zynqmp_pinctrl(9)
• struct zynqmp_pctrl_group(9)
• zynqmp_pmux_get_function_groups(9)
• zynqmp_pinconf_cfg_get(9)
• zynqmp_pinconf_cfg_set(9)
• zynqmp_pinconf_group_set(9)
• zynqmp_pinctrl_prepare_func_groups(9)
• zynqmp_pinctrl_create_pin_groups(9)
• zynqmp_pinctrl_prepare_group_pins(9)
• zynqmp_pinctrl_prepare_function_info(9)
• zynqmp_pinctrl_prepare_pin_desc(9)

that's the whole squad. iykyk. 👑

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💀 reminder bestie: it's 0 for success, error code otherwise. don't be out here assuming anything else.

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and that's the page!! brought to you by the fine people over at ./drivers/pinctrl, dated October 2026 🗓️✨ ty for reading, mwah, go set some muxes 💜🦋🎀