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-rw-r--r--doc/board/anbernic/index.rst9
-rw-r--r--doc/board/anbernic/rgxx3.rst47
-rw-r--r--doc/board/index.rst1
-rw-r--r--doc/board/rockchip/rockchip.rst3
4 files changed, 60 insertions, 0 deletions
diff --git a/doc/board/anbernic/index.rst b/doc/board/anbernic/index.rst
new file mode 100644
index 00000000000..03758d86137
--- /dev/null
+++ b/doc/board/anbernic/index.rst
@@ -0,0 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Anbernic
+========
+
+.. toctree::
+ :maxdepth: 2
+
+ rgxx3.rst
diff --git a/doc/board/anbernic/rgxx3.rst b/doc/board/anbernic/rgxx3.rst
new file mode 100644
index 00000000000..afa7538282f
--- /dev/null
+++ b/doc/board/anbernic/rgxx3.rst
@@ -0,0 +1,47 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+U-Boot for Anbernic RGxx3 Devices
+=================================
+
+This allows U-Boot to boot the following Anbernic devices:
+
+ - Anbernic RG353M
+ - Anbernic RG353P
+ - Anbernic RG353V
+ - Anbernic RG353VS
+ - Anbernic RG503
+
+The correct device is detected automatically by comparing ADC values
+from ADC channel 1. In the event of an RG353V, an attempt is then made
+to probe for an eMMC and if it fails the device is assumed to be an
+RG353VS. Based on the detected device, the environment variables
+"board", "board_name", and "fdtfile" are set to the correct values
+corresponding to the board which can be read by a boot script to boot
+with the correct device tree.
+
+Please note that there are some versions of the RG353 devices with
+different panels. Panel auto-detection is planned for a later date.
+
+Building U-Boot
+---------------
+
+.. code-block:: bash
+
+ $ export CROSS_COMPILE=aarch64-none-elf-
+ $ export BL31=../rkbin/bin/rk35/rk3568_bl31_v1.34.elf
+ $ export ROCKCHIP_TPL=../rkbin/bin/rk35/rk3568_ddr_1056MHz_v1.13.bin
+ $ make anbernic-rgxx3_defconfig
+ $ make
+
+This will build ``u-boot-rockchip.bin`` which can be written to an SD
+card.
+
+Image installation
+------------------
+
+Write the ``u-boot-rockchip.bin`` to an SD card offset 32kb from the
+start.
+
+.. code-block:: bash
+
+ $ dd if=u-boot-rockchip.bin of=/dev/mmcblk0 bs=512 seek=64
diff --git a/doc/board/index.rst b/doc/board/index.rst
index b2da6ec5532..120daa48ee2 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -11,6 +11,7 @@ Board-specific doc
AndesTech/index
allwinner/index
amlogic/index
+ anbernic/index
apple/index
armltd/index
atmel/index
diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index 1dccb17d725..a21399c88e1 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -87,6 +87,9 @@ List of mainline supported Rockchip boards:
- Rockchip Evb-RK3399 (evb_rk3399)
- Theobroma Systems RK3399-Q7 SoM - Puma (puma_rk3399)
+* rk3566
+ - Anbernic RGxx3 (rgxx3-rk3566)
+
* rk3568
- Rockchip Evb-RK3568 (evb-rk3568)