usb_get_maximum_ssp_rate(9)

💅 usb_get_maximum_ssp_rate(9)

okay bestie, welcome to the Kernel API Manual — yes, the big one. this page is all about usb_get_maximum_ssp_rate(9), and no cap it's a little niche but it's also kind of iconic once you get it. let's go 🎀

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✨ NAME ✨

usb_get_maximum_ssp_rate — get the signaling rate generation and the lane count of a device that's SuperSpeed Plus capable 🦋

like, both things. at once. she's efficient.

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🌸 SYNOPSIS 🌸

enum usb_ssp_rate usb_get_maximum_ssp_rate (struct device *dev );

one function, one argument, returns an enum usb_ssp_rate. clean. minimal. main character energy 🔥

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🎀 ARGUMENTS 🎀

• dev — pointer to the given USB controller device 💖 that's it, that's the whole input.

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💫 DESCRIPTION 💫

so here's the vibe: if the string that comes from the "maximum-speed" property is shaped like super-speed-plus-genXxY — you know the format, gen-something, times-something — then the function returns the corresponding enum usb_ssp_rate. slay. that's literally it. ✨

gen and lane count, matched up and handed back to you as an enum. iykyk 💅

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👑 SEE ALSO 👑

kernel file ./drivers/usb/common/common.c — and honestly the whole friend group:

• usb_ep_type_string(9)
• usb_otg_state_string(9)
• usb_speed_string(9)
• usb_get_maximum_speed(9)
• usb_state_string(9)
• usb_get_dr_mode_from_string(9)
• usb_get_role_switch_default_mode(9)
• usb_decode_interval(9)
• of_usb_get_dr_mode_by_phy(9)
• of_usb_host_tpl_support(9)
• of_usb_update_otg_caps(9)
• usb_of_get_companion_dev(9)

all twelve of them, no skips, go read 'em 🫶

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💀 reminder bestie: the source lives under ./drivers/usb/common, this is the Kernel API Manual, and the page is dated October 2026. that's the whole footer, folded in cute-style so nothing gets lost. periodt. 🌈⭐🍓