raspberry

hardware.raspberry-pi.4.audio.enable

Whether to enable configuration for audio .

example

{
  hardware.raspberry-pi.4.audio.enable = true;
}

default

{
  hardware.raspberry-pi.4.audio.enable = false;
}

hardware.raspberry-pi.4.dwc2.enable

Whether to enable Enable the UDC controller to support USB OTG gadget functions.

In order to verify that this works, connect the Raspberry Pi with another computer via the USB C cable, and then do one of:

modprobe g_serial
modprobe g_mass_storage file=/path/to/some/iso-file.iso

On the Raspberry Pi, dmesg should then show success-indicating output that is related to the dwc2 and g_serial/g_mass_storage modules. On the other computer, a serial/mass-storage device should pop up in the system logs.

For more information about what gadget functions exist along with handy guides on how to test them, please refer to: https://www.kernel.org/doc/Documentation/usb/gadget-testing.txt .

type

boolean

example

{
  hardware.raspberry-pi.4.dwc2.enable = true;
}

default

{
  hardware.raspberry-pi.4.dwc2.enable = false;
}

hardware.raspberry-pi.4.dwc2.dr_mode

Dual role mode setting for the dwc2 USB controller driver.

type

one of "host", "peripheral", "otg"

default

{
  hardware.raspberry-pi.4.dwc2.dr_mode = "otg";
}

hardware.raspberry-pi.4.fkms-3d.enable

Whether to enable Enable modesetting through fkms-3d .

type

boolean

example

{
  hardware.raspberry-pi.4.fkms-3d.enable = true;
}

default

{
  hardware.raspberry-pi.4.fkms-3d.enable = false;
}

hardware.raspberry-pi.4.fkms-3d.cma

Amount of CMA (contiguous memory allocator) to reserve, in MiB.

The foundation overlay defaults to 256MiB, for backward compatibility. As the Raspberry Pi 4 family of hardware has ample amount of memory, we can reserve more without issue.

Additionally, reserving too much is not an issue. The kernel will use CMA last if the memory is needed.

type

signed integer

default

{
  hardware.raspberry-pi.4.fkms-3d.cma = 512;
}

hardware.raspberry-pi.4.poe-hat.enable

Whether to enable support for the Raspberry Pi POE Hat. .

type

boolean

example

{
  hardware.raspberry-pi.4.poe-hat.enable = true;
}

default

{
  hardware.raspberry-pi.4.poe-hat.enable = false;
}

{
  hardware.raspberry-pi.4.tc358743.enable = true;
}

default

{
  hardware.raspberry-pi.4.tc358743.enable = false;
}