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https://github.com/brain-hackers/u-boot-brain
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Since there is no canonical "board device" that can be used in board files, it is difficult to use DM function for board initialization in these cases. Hence, add a uclass that implements a simple "board device", which can hold devices not suitable anywhere else in the device tree, and is also able to read encoded information, e.g. hard-wired GPIOs on a GPIO expander, read-only memory ICs, etc. that carry information about the hardware. The devices of this uclass expose methods to read generic data types (integers, strings, booleans) to encode the information provided by the hardware. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Mario Six <mario.six@gdsys.cc>
8 lines
284 B
Plaintext
8 lines
284 B
Plaintext
menuconfig BOARD
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bool "Device Information"
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help
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Support methods to query hardware configurations from internal
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mechanisms (e.g. reading GPIO values, determining the presence of
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devices on busses, etc.). This enables the usage of U-Boot with
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modular board architectures.
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