Hello Marek, it looks like commit 753395ea1e45 ("ARM: dts: imx7: Fix NAND controller size-cells"), that was backported to stable 6.0.10, introduce a boot regression on colibri-imx7, at least.
What I get is
[ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 6.0.10 (francesco@francesco-nb) (arm-linux-gnueabihf-gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9. 4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #36 SMP Wed Nov 30 14:07:15 CET 2022 ... [ 4.407499] gpmi-nand: error parsing ofpart partition /soc/nand-controller@33002000/partition@0 (/soc/nand-controller @33002000) [ 4.438401] gpmi-nand 33002000.nand-controller: driver registered. ... [ 5.933906] VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0): error -19 [ 5.946504] Please append a correct "root=" boot option; here are the available partitions: ...
Any idea? I'm not familiar with the gpmi-nand driver and I would just revert it, but maybe you have a better idea.
Francesco