u-boot.git/board, branch v2026.04-rc4

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

2026-02-25T14:49:28+00:00

- Assorted platform and video driver updates

board: samsung: exynos-mobile: add EFI capsule update support

2026-02-25T01:47:03+00:00

Add support for EFI capsule updates via U-Boot's DFU. This flashes the
boot partition with the new image provided in the capsule.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang

board: samsung: exynos-mobile: use blkmap for booting from userdata subpartitions

2026-02-25T01:47:03+00:00

Some distributions tend to provide a single combined image with EFS and
the system root filesystem. Flashing it as-is in a single partition
(usually done in userdata partition as it is the largest) is not
bootable as U-Boot does not understand subpartitions.

Use blkmap to map the userdata partition into its own block device.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang

ARM: stm32mp: Add STM32MP21 support

2026-02-24T16:41:48+00:00

STM32MP21 application processors (STM32 MPUs) based on a single
Arm Cortex®-A35 core running up to 1.5 GHz and Cortex®-M33 core
running at 300 MHz.

It is pin-compatible with the STM32MP2 series in the VFBGA361
10×10 mm package: the STM32MP21 uses a subset of the STM32MP23
pinout, which itself is a subset of the STM32MP25.

More details available here :
https://www.st.com/en/microcontrollers-microprocessors/stm32mp2-series.html

Signed-off-by: Patrice Chotard 
Reviewed-by: Patrick Delaunay

board: st: common: add uclass_get_device_by_driver()'s return value check

2026-02-24T13:14:15+00:00

class_get_device_by_driver()'s return value is not checked, in case of BSEC
driver is not probed, dev is not set and used just after as parameter of
misc_read() which leads to a Synchronous Abort.

Add uclass_get_device_by_driver()'s return value check to fix it.

Signed-off-by: Patrice Chotard 
Reviewed-by: Patrick Delaunay

board: st: common: Add support of stm32mp21xx-dk board

2026-02-24T13:14:15+00:00

Add board identifier for STM32MP21 discovery board = MB2059.

Signed-off-by: Patrice Chotard 
Reviewed-by: Patrick Delaunay

board: samsung: exynos-mobile: enable OF_BOARD support

2026-02-23T06:35:33+00:00

OF_BOARD allows to choose the internal device tree in runtime. Use it to
pass the external FDT as an internal one if it is not present. This
approach is also used by qcom-phone, and it reduces boot image size. It
is expected that an external FDT is present as U-Boot is packaged as an
Android boot image.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang

board: samsung: exynos-mobile: disable MULTI_DTB_FIT support

2026-02-23T06:35:33+00:00

MULTI_DTB_FIT allowed a single U-Boot image to be booted in multiple
devices, but it was not a scalable solution; as more devices are added,
the U-Boot binary is bound to increase, space taken up by devicetrees
which are not even used.

The other approach is to be able to build separate images for multiple
devices using the same "board" defined in U-Boot. This is used by
qcom_phone to support muitiple devices.

Follow the said approach for Exynos devices as well, disable
MULTI_DTB_FIT for this board.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang

board: samsung: exynos-mobile: resolve env vars without board_info data

2026-02-23T06:35:33+00:00

Move environment variable setup procedure to exynos_env_setup(). This
function is independent of data from exynos_board_info as it is due for
removal in the succeding commits.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang

board: samsung: exynos-mobile: simplify parsing RAM banks from device tree

2026-02-23T06:35:33+00:00

Remove the baked-in bank addresses used for figuring out RAM banks from
device tree. Instead, sequentially fill in the bank addresses and sizes,
and doing away with an extra array for specifying bases.

Signed-off-by: Kaustabh Chakraborty 
Signed-off-by: Minkyu Kang