How to customize the Agilex 7 I-series OS build with SOF and HPS changes ?

Hi

You would need to manually create the dts.

The peripherals node have been created, you would need to enable or disable it base on your usage of the hard IO.

There are samples based created for the devkit.

For the msgdma driver, you could get the driver here:

https://github.com/altera-fpga/linux-socfpga/blob/7b497655d942b6a44a87a2367463967e433ad422/drivers/net/ethernet/altera/altera_sgdma.c#L4

Regards

Jingyang, Teh