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doc: boards: amlogic: update documentation for Radxa Zero

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Improve documentation.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20230320114609.930145-24-christianshewitt@gmail.com
[narmstrong: fixed doc build]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Christian Hewitt 2023-03-20 11:45:59 +00:00 committed by Neil Armstrong
parent da8d658093
commit 16fa2c4238
1 changed files with 25 additions and 21 deletions
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46
doc/board/amlogic/radxa-zero.rst
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@ -1,14 +1,13 @@
.. SPDX-License-Identifier: GPL-2.0+
U-Boot for Radxa Zero
=====================
U-Boot for Radxa Zero (S905Y2)
==============================
Radxa Zero is a small form factor SBC based on the Amlogic S905Y2
chipset that ships in a number of RAM/eMMC configurations:
Radxa Zero is a small form factor SBC based on the Amlogic S905Y2 chipset that ships in
a number of RAM/eMMC configurations:
Boards with 512MB/1GB LPDDR4 RAM have no eMMC storage and BCM43436
wireless (2.4GHz b/g/n) while 2GB/4GB boards have 8/16/32/64/128GB
eMMC storage and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
512MB/1GB LPDDR4 RAM boards have no eMMC and BCM43436 wireless (2.4GHz b/g/n) while the
2GB/4GB boards have 8/16/32/64/128GB eMMC and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
- Amlogic S905Y2 quad-core Cortex-A53
- Mali G31-MP2 GPU
@ -18,11 +17,9 @@ eMMC storage and BCM4345 wireless (2.4/5GHz a/b/g/n/ac).
- 1x micro SD Card slot
- 40 Pin GPIO header
Schematics are available on the manufacturer website:
Schematics are available on the manufacturer website: https://dl.radxa.com/zero/docs/hw
https://dl.radxa.com/zero/docs/hw/RADAX_ZERO_V13_SCH_20210309.pdf
U-Boot compilation
U-Boot Compilation
------------------
.. code-block:: bash
@ -31,14 +28,21 @@ U-Boot compilation
$ make radxa-zero_defconfig
$ make
Image creation
--------------
U-Boot Signing with Pre-Built FIP repo
--------------------------------------
For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `radxa-zero`
.. code-block:: bash
Amlogic does not provide sources for the firmware and for tools needed
to create the bootloader image, so it is necessary to obtain them from
git trees published by the board vendor:
$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
$ cd amlogic-boot-fip
$ mkdir my-output-dir
$ ./build-fip.sh radxa-zero /path/to/u-boot/u-boot.bin my-output-dir
U-Boot Manual Signing
---------------------
Amlogic does not provide sources for the firmware and tools needed to create a bootloader
image so it is necessary to obtain binaries from sources published by the board vendor:
.. code-block:: bash
@ -61,16 +65,16 @@ git trees published by the board vendor:
$ cd ../fip/radxa-zero
$ make
This will generate:
This will generate the signed U-Boot binaries:
.. code-block:: bash
$ u-boot.bin u-boot.bin.sd.bin u-boot.bin.usb.bl2 u-boot.bin.usb.tpl
Then write the image to SD with:
Then write U-Boot to SD or eMMC with:
.. code-block:: bash
$ DEV=/dev/your_sd_device
$ DEV=/dev/boot_device
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440