cdns_init_otg_mode(9)

💅 cdns_init_otg_mode — bestie's guide to the kernel API manual ✨

okay so real talk, this is a page from the Kernel API Manual (the cdns_init_otg_mode(9) section, iykyk) and it's literally so short but it's giving "small but mighty". let's get into it 🎀

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🌸 NAME 🌸

cdns_init_otg_mode — initialize drd controller

like… that's the whole vibe. it initializes the drd controller. no notes. 💅

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✨ SYNOPSIS ✨

int cdns_init_otg_mode (struct cdns *cdns );

yes bestie, that's the signature, copy it exactly, don't be weird about it 🫶

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🦋 ARGUMENTS 🦋

• cdns — Pointer to controller context structure. it's a pointer, it points at the controller context struct, and you're gonna hand it over. that's it. that's the whole argument list. one (1) singular argument. iconic behavior honestly 👑

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💖 DESCRIPTION 💖

Returns 0 on success otherwise negative errno.

and like… that's genuinely the entire description. no lore, no backstory, no drama. it works, you get a 0 🎉. it doesn't work, you get a negative errno and you go cry about it (affectionately) 😭.

ngl it's a short page but every word of it is load-bearing. 0 = slay, negative errno = not slay. periodt.

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🌈 SEE ALSO 🌈

Kernel file ./drivers/usb/cdns3/drd.c — and the whole little friend group of related functions, all (9), all here:

• cdns_set_mode(9)
• cdns_otg_disable_irq(9)
• cdns_otg_enable_irq(9)
• cdns_drd_host_on(9)
• cdns_drd_host_off(9)
• cdns_drd_gadget_on(9)
• cdns_drd_gadget_off(9)
• cdns_drd_update_mode(9)
• cdns_drd_irq(9)

go read those too, they're the main character energy of ./drivers/usb/cdns3 and they ate 🔥

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🧚 cute little sign-off 🧚

this page came from ./drivers/usb/cdns3, dated October 2026, and it goes by cdns_init_otg_mode(9) — mwah, stay hydrated, read your errno values 💜🌸