Hi there,
Previously the driver is not compatible with Linux raspberrypi 4.19.42-v7+. We just updated the driver by following below instructions. thanks.
</s>cd seeed-voicecard
sudo ./uninstall.sh
sudo reboot
cd seeed-voicecard
sudo ./install.sh<e>
</s>pi@raspberrypi:~ $ uname -a
Linux raspberrypi 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux
pi@raspberrypi:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: seeed4micvoicec [seeed-4mic-voicecard], device 0: bcm2835-i2s-ac10x-codec0 ac10x-codec.1-003b-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
pi@raspberrypi:~ $ <e>