Hi,
I want to use the I2S GPIO output pins on Nanopi m4 to connect to multi channel DAC. Unfortunately I can not see it as a playback device:
user@nanopim4:/home$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: realtekrt5651co [realtek,rt5651-codec], device 0: ff890000.i2s-rt5651-aif1 rt5651-aif1-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: rockchiphdmi [rockchip,hdmi], device 0: ff8a0000.i2s-i2s-hifi i2s-hifi-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
Is there a way to enable I2S output on GPIO?
36 | I2S0_SDO0(1.8V)
37 | I2S0_SDI1SDO3(1.8V)
38 | I2S0_SDI2SDO2(1.8V)
39 | GND
40 | I2S0_SDI3SDO1(1.8V)
user@nanopim4:/home$ cat /etc/armbian-image-release
# PLEASE DO NOT EDIT THIS FILE
BOARD=nanopim4
BOARD_NAME="NanoPi M4"
BOARDFAMILY=rk3399
BUILD_REPOSITORY_URL=https://github.com/armbian/build
BUILD_REPOSITORY_COMMIT=1221d592
VERSION=5.95
LINUXFAMILY=rk3399
BRANCH=default
ARCH=arm64
IMAGE_TYPE=stable
BOARD_TYPE=conf
INITRD_ARCH=arm64
KERNEL_IMAGE_TYPE=Image
IMAGE_UUID=aa7287f5-d3a9-444e-b198-e24e2ed8aa1f
