Nvidia Tegra 4 (tegra114)

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Nvidia Tegra 4
NVIDIA T114 chip
NVIDIA T114 chip
Manufacturer Nvidia
Name Tegra 4
Architecture armv7
CPU 4x 1.8-1.9 GHz Cortex-A15
GPU Nvidia ULP Geforce 72 cores
Year 2013
Process 28nm
Mainline yes
Community Page https://github.com/grate-driver
Components
CPU
Partial
UART
Works
Storage
Works
USB
Partial
Display
Works
GPU
Partial
Pinctrl
Works
I²C
Works
SPI
Audio
Works
Video
Partial
Thermal
Works
WiFi
Unavailable
Bluetooth
Unavailable
Modem
Unavailable
GPS
Unavailable
Camera
Suspend
Works


Devices with a Nvidia Tegra 4 Chipset

Device Mainline
ASUS Transformer Pad (TF701T) Y
HP Slate 21
Microsoft Surface 2 Y
NVIDIA Tegra Note 7 Y

List of missing/malfunctioning drivers

  • DSI driver and MIPI calibration (malfunctioning on TF701T)
  • HDMI driver (no evidence that it can work on T114)
  • ACTMON driver (is present but has dependency on missing driver)
  • SPI driver (fails to detect some spi devices)
  • EMC/external-memory-controller driver (missing, required by actmon)
  • HDA driver (T30 has T114 support but it fails to work)
  • XUSB and XUSB-padctl (missing, T124 may be used as reference)
  • CEC driver (present but not tested since HDMI does not work)
  • SOCTHERM driver and thermal zones (missing, T124 may be used as reference)
  • DFLL driver (missing, T124 may be used as reference)


  • cortex-a15-pmu (check if it is used by t114)
  • powergates and power-domains (check if it is needed by t114)

CPU

DVFS and thermal zones are not supported, everything else works.

USB

Tegra114 supports XUSB (XHCI), but kernel currently does not support XUSB, so USB can work only in EHCI mode.

GPU & Video

See Nvidia_Tegra_2_(tegra20)#Graphics.

See also