ENUM I3C_OPEN_DRAIN_SPEED(9)

✨ enum i3c_open_drain_speed — I3C open-drain speed ✨

okay so real talk, this is a page straight out of the Kernel API Manual, bestie, and it's about one tiny little enum that lives rent-free in ./include/linux/i3c and honestly? it's giving "small but mighty." it's the enum i3c_open_drain_speed, and it's literally just here to tell you I3C open-drain speed. that's the whole vibe. short page, zero filler, we love a concise icon. 💅

🦋 SYNOPSIS 🦋

enum i3c_open_drain_speed {
    I3C_OPEN_DRAIN_SLOW_SPEED ,
    I3C_OPEN_DRAIN_NORMAL_SPEED

};

like, two members. two. and yes the spacing is exactly what it is, do not come for me, i'm just the messenger 🎀

🌸 Constants 🌸

• I3C_OPEN_DRAIN_SLOW_SPEED — okay so this is the slow open-drain speed, and it's specifically the one you use for sending the first broadcast address. and here's the tea: when you send that first broadcast address at this speed, it's visible to all devices on the I3C bus — like, everybody sees it, it's a whole group chat. also, I3C devices that are chugging along in I2C mode? they will turn off their spike filter when they switch into I3C mode. so that's a thing that happens, noted. 🫶
• I3C_OPEN_DRAIN_NORMAL_SPEED — and this one is just the normal open-drain speed in I3C bus mode. no dramatic side effects, no spike-filter lore, just the regular speed doing its regular speed thing. main character energy but make it chill. 😌

🔥 SEE ALSO 🔥

okay bestie, buckle up, because this section is long and i am not about to skip a single one of these. every single reference, here we go, in order, no cap:

Kernel file ./include/linux/i3c/master.h, then:

• struct i3c_i2c_dev_desc(9)
• struct i2c_dev_boardinfo(9)
• struct i2c_dev_desc(9)
• struct i3c_ibi_slot(9)
• struct i3c_device_ibi_info(9)
• struct i3c_dev_boardinfo(9)
• struct i3c_dev_desc(9)
• struct i3c_device(9)
• enum i3c_bus_mode(9)
• enum i3c_addr_slot_status(9)
• struct i3c_bus(9)
• struct i3c_master_controller_ops(9)
• struct i3c_master_controller(9)
• i3c_bus_for_each_i2cdev(9)
• i3c_bus_for_each_i3cdev(9)
• struct i3c_dma(9)
• i3c_dev_get_master_data(9)
• i3c_dev_set_master_data(9)
• i2c_dev_get_master_data(9)
• i2c_dev_set_master_data(9)
• i3c_dev_get_master(9)
• i2c_dev_get_master(9)
• i3c_master_get_bus(9)

whew. drank water, touched grass, we're back. that's the whole list, i promise, nothing got left behind 💖

ngl, this whole page is living at ./include/linux/i3c and it's dated October 2026, and that's literally the sign-off bestie — mwah, hope the enum made sense, go forth and open-drain responsibly 🧚‍♀️✨🍓