--- wikisrc/ports/evbarm/tegra.mdwn	2017/04/13 20:30:52	1.39
+++ wikisrc/ports/evbarm/tegra.mdwn	2017/04/14 11:11:38	1.42
@@ -21,6 +21,8 @@ The NetBSD tegra port currently supports
  - Watchdog timer
  - SDMMC [[!template id=man name="sdhc" section="4"]] controller
  - USB 2.0 [[!template id=man name="ehci" section="4"]] controller
+ - USB 3.0 [[!template id=man name="xhci" section="4"]] controller
+   - Requires the [sysutils/tegra-firmware](http://pkgsrc.se/sysutils/tegra-firmware) package to be installed.
  - PCI express
  - SATA [[!template id=man name="ahcisata" section="4"]] controller
  - HDMI
@@ -43,7 +45,6 @@ The NetBSD tegra port currently supports
  - APB DMA
  - Audio Hub (AHUB)
  - GPU (nouveau)
- - USB 3.0 [[!template id=man name="xhci" section="4"]] controller
  - SPI controller
  - PWM controller
  - PCIe MSI support
@@ -52,7 +53,7 @@ The NetBSD tegra port currently supports
 
 # Generating a boot script
 
-The Tegra kernels need a .dtb for your board to boot. The dtb here was updated on 18th June 2016 to fix an issue with the USB port. [NVIDIA Jetson TK1 .dtb](http://ftp.netbsd.org/pub/NetBSD/misc/skrll/tegra/tegra124-jetson-tk1.dtb)
+The Tegra kernels need a .dtb for your board to boot. The dtb here was updated on 2017-04-13 and is generated from a Linux 4.10.10 source tree. [NVIDIA Jetson TK1 .dtb](http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/tegra/tegra124-jetson-tk1.dtb)
 
 [[!template  id=programlisting text="""
 $ cat boot.txt
@@ -89,6 +90,37 @@ Section "Device"
 EndSection
 """]]
 
+# GPU (nouveau)
+
+To enable the GPU, add the following before the ''bootm'' command in the boot script:
+
+[[!template  id=programlisting text="""
+fdt set /gpu@0,57000000 status okay
+"""]]
+
+For the nouveau driver to load successfully, firmware is required:
+ - Install the [sysutils/tegra-firmware](http://pkgsrc.se/sysutils/tegra-firmware) package from pkgsrc.
+ - Extract the contents of [tegra-nouveau-firmware.tar.gz](http://cdn.netbsd.org/pub/NetBSD/misc/jmcneill/tegra/tegra-nouveau-firmware.tar.gz) to ''/libdata/firmware/nouveau''.
+
+You should see the following messages at boot:
+
+[[!template  id=programlisting text="""
+nouveau0 at fdt0: GPU
+drm kern info: nouveau  [  DEVICE][nouveau0] BOOT0  : 0x0ea000a1
+drm kern info: nouveau  [  DEVICE][nouveau0] Chipset: GK20A (NVEA)
+drm kern info: nouveau  [  DEVICE][nouveau0] Family : NVE0
+drm kern info: nouveau  [     PFB][nouveau0] RAM type: stolen system memory
+drm kern info: nouveau  [     PFB][nouveau0] RAM size: 2019 MiB
+drm kern info: nouveau  [     PFB][nouveau0]    ZCOMP: 0 tags
+drm kern info: nouveau  [  PGRAPH][nouveau0] using external firmware
+drm kern info: nouveau  [     DRM] VRAM: 2019 MiB
+drm kern info: nouveau  [     DRM] GART: 1048576 MiB
+drm kern error: nouveau E[   PFIFO][nouveau0] unsupported engines 0x00000030
+drm kern error: nouveau E[     DRM] failed to create ce channel, -22
+drm kern info: nouveau  [     DRM] MM: using GRCE for buffer copies
+nouveau0: initialized nouveau 1.1.1 20120801 on minor 1
+"""]]
+
 # dmesg
 
 [[!template  id=programlisting text="""