octeon_i2c_reg_read(9)

💅 octeon_i2c_reg_read(9) 💅

okay so bestie, we're in the Kernel API Manual today and this little function is genuinely iconic — it's octeon_i2c_reg_read, and it reads the lower bits of an I2C core register. that's it. that's the whole vibe. 🎀

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✨ NAME ✨

octeon_i2c_reg_read — reads the lower bits of an I2C core register, no cap

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🌸 SYNOPSIS 🌸

int octeon_i2c_reg_read (struct octeon_i2c *i2c , u64 eop_reg , int
*error );

literally just three args and it returns an int, we love a simple signature 🫶

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🦋 ARGUMENTS 🦋

• i2c — the struct octeon_i2c, aka the main character of this whole operation 💖
• eop_reg — the register selector, like your little dropdown menu of which register we're peeking at 🔥
• error — undescribed 🙈 the manpage literally gives us nothing here, so we're not gonna invent lore. it's giving mystery. it's giving "the docs said no comment."

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⭐ DESCRIPTION ⭐

so what does it actually do? it returns the data. periodt. 💅

and here's the tea on the plumbing, bestie: the I2C core registers are accessed indirectly via the SW_TWSI CSR. so you don't just grab them directly — there's a whole middleman situation going on, iykyk. 🧚

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🌈 SEE ALSO 🌈

• the kernel file ./drivers/i2c/busses/i2c-octeon-core.h — go read the source, it's right there 👑
• octeon_i2c_reg_write(9)
• octeon_i2c_read_int(9)
• octeon_i2c_write_int(9)
• octeon_i2c_is_otx2(9)

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and that's the whole page, bestie!! 🍓 this one lives over in ./drivers/i2c/busses and it's dated October 2026 — so yeah, mark your calendar, screenshot it, send it to the group chat, slay 💜✨