how to enable mic linein input using microphone(3.5mm jack) in UBUNTU

penguin

Hi, @meche95,
According to the driver code at:
https://github.com/FireflyTeam/k ... soc/codecs/rt5640.c

add "linein-mute = 1" to the rt5640 node in dts.

Then a "/sys/linein/linein" file will be created.

echo 1 > /sys/linein/linein

should be sufficient to turn on Line In support.

penguin

Hi @meche95,

You can use some tools to extract FIREFLY-RK3399-UBUNTU18.04-GPT-20190216-1136.img,
splitting into individual kernel, uboot and rootfs image etc.

http://wiki.t-firefly.com/en/Fir ... droid_firmware.html

Then you can take the right rootfs to move on.