IG4(4)

💖 ig4(4) — Synopsys DesignWare I2C Controller 💖

okay bestie, welcome to the ig4(4) page from the Kernel Interfaces Manual. This is the Synopsys DesignWare I2C Controller driver, and we’re gonna get you comfy with it. ✨

🌸 NAME 🌸

ig4 — Synopsys DesignWare I2C Controller. That’s the whole name, no cap. 💅

✨ SYNOPSIS ✨

To compile this driver into the kernel, place the following lines into the kernel configuration file:

device ig4
device iicbus

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

ig4_load="YES"

🦋 DESCRIPTION 🦋

The ig4 driver provides access to peripherals attached to an I2C controller. That’s the whole job, and it’s giving main character energy. 🫶

🔥 HARDWARE 🔥

ig4 supports the I2C controllers based on Synopsys DesignWare IP that can be found in Intel(R) Core(TM) processors starting from the fourth generation, Intel(R) Bay Trail, Apollo Lake SoC families, and some AMD systems. So if your hardware is on that list, hiiiii bestie. 💖

💅 SYSCTL VARIABLES 💅

These sysctl(8) variables are available:

• debug.ig4_dump — This sysctl is a zero-based bit mask. When any of the bits are set, a register dump is printed for every I2C transfer on an ig4 device with the same unit number. iykyk 👑

🌈 SEE ALSO 🌈

iic(4), iicbus(4)

👑 AUTHORS 👑

The ig4 driver was written for DragonFly by Matthew Dillon and subsequently ported to FreeBSD by Michael Gmelin <freebsd@grem.de>. Slay, thank you for your service. 🫶

This manual page was written by Michael Gmelin <freebsd@grem.de>. Also iconic. 🎀

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okay bye bestie — the source/version is Debian and the date is September 13, 2018. periodt 💖