Merge branch 'staging' of https://source.denx.de/u-boot/custodians/u-boot-tegra

Branch contains minor improvents for ASUS SL101 and Jetson Nano along
with support for Microsoft Surface 2 tablet.

2 files changed, 42 insertions, 0 deletions

diff --git a/doc/board/microsoft/index.rst b/doc/board/microsoft/index.rst
index 107f3527852..8318449a9a2 100644
--- a/doc/board/microsoft/index.rst
+++ b/doc/board/microsoft/index.rst
@@ -6,4 +6,5 @@ Microsoft
 .. toctree::
    :maxdepth: 2
 
+   surface-2
    surface-rt
diff --git a/doc/board/microsoft/surface-2.rst b/doc/board/microsoft/surface-2.rst
new file mode 100644
index 00000000000..8185c6f5ae4
--- /dev/null
+++ b/doc/board/microsoft/surface-2.rst
@@ -0,0 +1,41 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+U-Boot for the Microsoft Surface 2 tablet
+=========================================
+
+Quick Start
+-----------
+
+- Build U-Boot
+- Boot
+
+Build U-Boot
+------------
+
+.. code-block:: bash
+
+    $ export CROSS_COMPILE=arm-none-eabi-
+    $ make surface-2_defconfig
+    $ make
+
+After the build succeeds, you will obtain the final ``u-boot-dtb-tegra.bin``
+image, ready for loading.
+
+Boot
+----
+
+Currently, U-Boot can be preloaded into RAM via the Fusée Gelée. To enter
+RCM protocol use ``power`` and ``volume up`` key combination from powered
+off device. The host PC should recognize an APX device.
+
+Built U-Boot ``u-boot-dtb-tegra.bin`` can be loaded from fusee-tools
+directory with
+
+.. code-block:: bash
+
+    $ ./run_bootloader.sh -s T30 -t ./bct/surface-2.bct
+
+To boot Linux, U-Boot will look for an ``extlinux.conf`` on MicroSD and then on
+eMMC. Additionally, if the Volume Down button is pressed while loading, the
+device will enter bootmenu. Bootmenu contains entries to mount MicroSD and eMMC
+as mass storage, fastboot, poweroff and enter U-Boot console.