[nrf noup] boot: zephyr: nrf_cleanup: clean all enabled UARTE instances - #694
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[nrf noup] boot: zephyr: nrf_cleanup: clean all enabled UARTE instances#694cqfmh wants to merge 1 commit into
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The UARTE cleanup list was hardcoded and missed EasyDMA-capable instances on some SoCs, so a UARTE left active by the previous image could keep writing RAM via EasyDMA after chain-load and fault the next image. Derive the list from devicetree (DT_FOREACH_STATUS_OKAY) so every enabled UARTE is quiesced, and stop the TX direction alongside RX before disabling. Signed-off-by: cqfmh <258567898+cqfmh@users.noreply.github.com>
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Problem
nrf_cleanup_peripheral()'s UARTE list is hardcoded and misses some EasyDMA-capable
instances, so a UARTE left active by the previous image can keep its EasyDMA running
into the next image after chain-load and fault it.
Fix
Build the list from devicetree (DT_FOREACH_STATUS_OKAY(nordic_nrf_uarte, ...)) so every
enabled UARTE is quiesced, and stop the TX direction alongside RX before disabling.
Verified on hardware.