mv88e6393x_g...gpio_set_smi(9)

💅 mv88e6393x_g...gpio_set_smi(9) 💅

okay bestie, welcome to the Kernel API Manual — this one's a kernel function page, section 9, and honestly? it's giving "small function, important job." no cap. let's get into it 🫶

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✨ NAME ✨

mv88e6393x_g2_scratch_gpio_set_smi — like, the whole point of this function is to set gpio muxing for external smi. that's it, that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

int mv88e6393x_g2_scratch_gpio_set_smi (struct mv88e6xxx_chip *chip ,
bool external );

yep, that's the signature, keep it exactly like that, she's iconique 💅

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🦋 ARGUMENTS 🦋

• chip — chip private data. it's the chip's own lil personal stash of info, main character energy ✨
• external — set mux for external smi, or free for gpio usage. so you're either like "go be an SMI interface bestie" or "okay back to regular GPIO duty for you" 🔥

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🧚 DESCRIPTION 🧚

okay so here's the lore 🍓

MV88E6191X/6193X/6393X GPIO pins 9 and 10 can be configured as an external SMI interface or as regular GPIO-s. literally the same two pins, two whole personalities. choose wisely 😭

they however have a different register layout then the existing function. so yeah — not the same as the older ones, don't @ me, it's just built different 💀 (and that's exactly why this separate function exists, iykyk)

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👑 SEE ALSO 👑

• Kernel file ./drivers/net/dsa/mv88e6xxx/global2_scratch.c 🌈
• mv88e6xxx_g2_scratch_get_bit(9)
• mv88e6xxx_g2_scratch_set_bit(9)
• mv88e6352_g2_scratch_gpio_get_data(9)
• mv88e6352_g2_scratch_gpio_set_data(9)
• mv88e6352_g2_scratch_gpio_get_dir(9)
• mv88e6352_g2_scratch_gpio_set_dir(9)
• mv88e6352_g2_scratch_gpio_get_pctl(9)
• mv88e6352_g2_scratch_gpio_set_pctl(9)
• mv88e6390_g2_scratch_gpio_set_smi(9)
• mv88e6352_g2_cache_global_scratch_config3(9)
• mv88e6352_g2_scratch_port_has_serdes(9)

go read the whole squad, they're all slaying in their own way 👑

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fr fr always double-check which mode those pins are in before you touch anything — muxing is forever (until you set it back) 💀

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that's the whole page!! this gorgeous thing lives in the kernel tree at ./drivers/net/dsa/mv88e6xxx, dated October 2026 — and it's page mv88e6393x_g...gpio_set_smi(9) of the Kernel API Manual. bye bestie, go mux responsibly 💖✨🎀