Initial support Odroid N2 / Linux 5.4 (#523)

* Initial version Odroid N2

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* fix some issue

* optimize

* cleanup kernel config

* Fix HDMI output

* Migrate to upstream u-boot

* Use own HA image

* Add kernel for odroid xu4

* Add N2 to release pipeline

* Use uboot 2020.01 / fix version hardkernel

* Fix image

Documentation/boards/hardkernel/odroid-n2.md

@@ -0,0 +1,14 @@
+# Odroid-N2
+
+## eMMC
+
+eMMC support is provided transparently. Just flash the image to the eMMC board as you would an SD card.
+
+## Console
+
+By default, console access is granted over the serial header and over HDMI. Certain startup messages will only appear on the serial console by default. To show the messages on the HDMI console instead, swap the order of the two consoles in the `cmdline.txt` file on the boot partition. You can also delete the AML0 console if you don't plan on using the serial adapter.
+eg. `console=ttyAML0,115200n8 console=tty0`
+
+## GPIO
+
+Refer to [the odroid wiki](https://wiki.odroid.com/odroid-n2/hardware/expansion_connectors).

Documentation/kernel.md

@@ -6,7 +6,8 @@
 | Open Virtual Applicance | 4.19.88 |
 | Raspberry Pi | 4.19.88 |
 | Tinker Board | 4.19.88 |
-| Odroid-C2 | 4.19.72 |
-| Odroid-XU4 | 4.19.72 |
+| Odroid-C2 | 5.4.6 |
+| Odroid-N2 | 5.4.6 |
+| Odroid-XU4 | 5.4.6 |
 | Orangepi-Prime | 4.19.88 |
 | Intel NUC | 4.19.88 |