[PATCH v3 0/7] support overlays to the barebox live tree

Sascha Hauer s.hauer at pengutronix.de
Fri Mar 10 01:42:15 PST 2023

Support for applying a device tree overlay to the barebox live tree
is already present. This series adds a few missing pieces:

- add support for applying overlays to the live tree from the command
- add support for adding new I2C/SPI devices via overlays
- add Makefile magic to build dtbo files and dtbo.o files to include
  into the barebox binary from dtso files

Changes since v2:
- Don't build compressed dtbo files
- Do not build overlays for PBL
- rename symbols to __dtbo_ to avoid possible name clashes

Changes since v1:
- add a device_rescan() static inline wrapper
- add missing call to of_i2c_register_devices() in i2c_add_numbered_adapter()
- replace device_detect with device_rescan in of_device_create_on_demand()

Sascha Hauer (7):
  kbuild: Add target to build dtb overlay files
  driver: Add rescan hook to struct device
  i2c: implement rescan
  spi: Directly register SPI device
  spi: reduce scope of 'chip'
  spi: implement rescan
  of_overlay: Add option to apply overlay to live tree

 commands/of_overlay.c  | 38 ++++++++++++++++++++++++++++++++++----
 drivers/i2c/i2c.c      | 24 +++++++++---------------
 drivers/of/platform.c  | 12 +++++-------
 drivers/spi/spi.c      | 29 ++++++++++++++++++++++++-----
 include/driver.h       |  6 ++++++
 scripts/Makefile.build |  2 ++
 scripts/Makefile.lib   | 10 +++++++++-
 scripts/gen-dtbo-s     | 14 ++++++++++++++
 8 files changed, 103 insertions(+), 32 deletions(-)
 create mode 100755 scripts/gen-dtbo-s


More information about the barebox mailing list