T4: HDMI Codec and Multichannel
Posted: Wed Dec 04, 2019 10:13 pm
Hi there.
Whatever I do, the HDMI-CODEC audio device in ALSA is showing ONLY as stereo. As I can understand the TRM, the HDMI is attached to I2S2 (ff8a0000), which must be multichannel.
Trying to understand the kernel driver, I found out that channels_max is proper 8, not 2.
Where's the problem? There's no default asound.conf in the distro, so ALSA must find out the number of channels automatically, however plugging a receiver to the T4 results only in "failed to get edid" (as there is no TV attached) and "asoc-simple-card hdmi-codec: i2s-hifi <-> ff8a0000.i2s mapping ok". The receiver shows only Left and Right channels, too...
What am I doing wrong? I need all 8 channels through HDMI.
Whatever I do, the HDMI-CODEC audio device in ALSA is showing ONLY as stereo. As I can understand the TRM, the HDMI is attached to I2S2 (ff8a0000), which must be multichannel.
Trying to understand the kernel driver, I found out that channels_max is proper 8, not 2.
Where's the problem? There's no default asound.conf in the distro, so ALSA must find out the number of channels automatically, however plugging a receiver to the T4 results only in "failed to get edid" (as there is no TV attached) and "asoc-simple-card hdmi-codec: i2s-hifi <-> ff8a0000.i2s mapping ok". The receiver shows only Left and Right channels, too...
What am I doing wrong? I need all 8 channels through HDMI.