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* fdt: add decode helper librarySimon Glass2011-10-26-0/+128
This library provides useful functions to drivers which want to use the fdt to control their operation. Functions are provided to: - look up and enumerate a device type (for example assigning i2c bus 0, i2c bus 1, etc.) - decode basic types from the fdt, like addresses and integers While this library is not strictly necessary, it helps to minimise the changes to a driver, in order to make it work under fdt control. Less code is required, and so the barrier to switch drivers over is lower. Additional functions to read arrays and GPIOs could be made available here also. Signed-off-by: Simon Glass <sjg@chromium.org>