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RFC: adding a runtime ready RPI4 dtb for tests. #5

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@fozog fozog commented Jan 13, 2023

PleasePI4 DTBs as static file typically do not include memory stuff: those are added by videocore firmware.

The DTB provided has been saved with U-Boot
just before transfering control to an OS: this is the DTB that fdt-rs will have to deal with in real world.

Another interest of the RPI4 DTB is that bus addresses need translations using ranges to obtain MMIO region for devices.

PleasePI4 DTBs as static file typically do not include memory stuff:
those are added by videocore firmware.

The DTB provided has been saved with U-Boot
just before transfering control to an  OS: this is the DTB that
fdt-rs will have to deal with in real world.

Another interest of the RPI4 DTB is that bus addresses need translations
using ranges to obtain MMIO region for devices.
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