Closed MTNTheCompWiz closed 5 years ago
Hi, yes Audio is untested on the linux-l4t-4.4 version of our drivers. Unfortunately we have currently not planned to support audio, as we do not need it in any of our projects. The way to capture audio on our old linux-l4t (based on kernel version 3.10) on I2S4 is described here: [1]. If you want to look at enabling audio capture, maybe it helps to look at our old commits related to enabling audio: [2] Actually my guess is, that there might be issues here:
Hope that helps..
[1] https://github.com/InES-HPMM/linux-l4t/wiki/captureHdmiAudio [2] https://github.com/InES-HPMM/linux-l4t/commit/9150157d2b1f73aefe01e9a07e3b062a45d57247 [3] https://github.com/InES-HPMM/linux-l4t/blob/hdmi2csi/l4t-r24-2.1/drivers/media/i2c/tc358840.c
I know the wiki says audio is untested... so I thought I would give it a try. Long story short, audio is being sent to j21's i2s bus... but either the codec is wrong or something else, because all I get is static (except when the input source is silent). Unfortunately, I'm not too sure how to troubleshoot this. Any pointers?