The upstream fixes to U-Boot 2023.01 for what broke things for 8 GiByte RPi4B/CM4 (and other things) are . . .

From: Mark Millard <marklmi_at_yahoo.com>
Date: Thu, 09 Mar 2023 23:48:39 UTC
lmb: Treat a region which is a subset as equal :

https://source.denx.de/u-boot/u-boot/-/commit/0d91c88230fe8bd9f8d39ca2ab69cd6282e9f949

Bump LMB_MAX_REGIONS default to 16 :

https://source.denx.de/u-boot/u-boot/-/commit/2dc16a2c1f924985216b3f1d6710f96d6c4fb1ab

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Mark Millard
marklmi at yahoo.com