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Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-samsung

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- Assorted platform and video driver updates
This commit is contained in:
Tom Rini
2026-02-25 08:49:28 -06:00
parent 78ea226ddb 336dd39b95
commit 7995bf8dea
11 changed files with 550 additions and 239 deletions
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5
doc/board/samsung/exynos-mobile.rst
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@@ -25,12 +25,13 @@ If a cross-compiler is required, install it and set it up like so:
export CROSS_COMPILE=aarch64-linux-gnu-
Then, run the following commands to build U-Boot:
Then, run the following commands to build U-Boot (replace ``<dtb>`` with the
upstream DTB path for the target device):
.. prompt:: bash $
make O=.output exynos-mobile_defconfig
make O=.output -j$(nproc)
make DEVICE_TREE=<dtb> O=.output -j$(nproc)
If successful, the U-Boot binary will be present in ``.output/u-boot.bin``.

42
doc/board/samsung/exynos-mobile/exynos7870.rst
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@@ -6,54 +6,20 @@ Samsung Exynos 7870 Boards
Preparation
-----------
Create the following device tree (named ``stub.dts``)
.. code-block:: devicetree
/dts-v1/;
/ {
compatible = "samsung,exynos7870";
#address-cells = <2>;
#size-cells = <1>;
model_info-chip = <7870>;
model_info-hw_rev = <0>;
model_info-hw_rev_end = <255>;
chosen {
};
memory@80000000 {
device_type = "memory";
reg = <0x0 0x80000000 0x0>;
};
memory@100000000 {
device_type = "memory";
reg = <0x1 0x00000000 0x0>;
};
};
The chosen node and memory ranges are populated by S-BOOT. A certain device
model may have multiple variants, with differing amounts of RAM and storage. The
RAM capacity information is graciously provided by S-BOOT's device tree
overlays.
Compile it to a device tree blob, then pack it in the QCDT format [1]_ using
``dtbTool-exynos`` [2]_ by issuing the following commands:
Pack the device tree blob in the QCDT format [1]_ using ``dtbTool-exynos`` [2]_
by issuing the following commands:
.. prompt:: bash $
dtc -I dts -O dtb -o stub.dtb stub.dts
dtbTool-exynos -o stub-dt.img stub.dtb
dtbTool-exynos -o stub-dt.img .output/u-boot.dtb
Finally, use ``mkbootimg`` by osm0sis [3]_ to generate the boot image:
.. prompt:: bash $
mkbootimg -o u-boot.img \
--kernel .output/u-boot.bin \
--kernel .output/u-boot-nodtb.bin \
--dt stub-dt.img
Offsets are not provided to ``mkbootimg`` as S-BOOT ignores them.