[SOLVED] Not getting past TPL (Device tree issues?)

I am trying to upgrade a yocto build to scarthgap. On kirkstone everything worked fine and we got a bootable image. While doing so, I struggle with u-boot. Already had to use 2023.07.02, because the default 2024.10 has removed the RK3399 from the Makefile. I may to address this later, since we would like to be up to date with the recent changes. Any way.

When trying to boot with 2023.07.02, I get the following debug output.

U-Boot TPL 2023.07.02 (Oct 24 2024 - 14:13:42)
ofnode_read_prop: assigned-clock-rates: <not found>
bind node aliases
Device 'aliases' has no compatible string
bind node mmc@fe320000
   - attempt to match compatible string 'rockchip,rk3399-dw-mshc'
   - attempt to match compatible string 'rockchip,rk3288-dw-mshc'
No match for node 'mmc@fe320000'
bind node mmc@fe330000
   - attempt to match compatible string 'rockchip,rk3399-sdhci-5.1'
   - attempt to match compatible string 'arasan,sdhci-5.1'
No match for node 'mmc@fe330000'
bind node serial@ff180000
   - attempt to match compatible string 'rockchip,rk3399-uart'
   - attempt to match compatible string 'snps,dw-apb-uart'
   - found match at 'ns16550_serial': 'ns16550' matches 'snps,dw-apb-uart'
bind node serial@ff1a0000
   - attempt to match compatible string 'rockchip,rk3399-uart'
   - attempt to match compatible string 'snps,dw-apb-uart'
   - found match at 'ns16550_serial': 'ns16550' matches 'snps,dw-apb-uart'
bind node power-management@ff310000
   - attempt to match compatible string 'rockchip,rk3399-pmu'
   - found match at 'rk3399_syscon': 'rockchip,rk3399-grf' matches 'rockchip,rk3399-pmu'
bind node syscon@ff320000
   - attempt to match compatible string 'rockchip,rk3399-pmugrf'
   - found match at 'rk3399_syscon': 'rockchip,rk3399-grf' matches 'rockchip,rk3399-pmugrf'
bind node pmu-clock-controller@ff750000
   - attempt to match compatible string 'rockchip,rk3399-pmucru'
   - found match at 'rockchip_rk3399_pmucru': 'rockchip,rk3399-pmucru' matches 'rockchip,rk3399-pmucru'
bind node clock-controller@ff760000
   - attempt to match compatible string 'rockchip,rk3399-cru'
   - found match at 'rockchip_rk3399_cru': 'rockchip,rk3399-cru' matches 'rockchip,rk3399-cru'
bind node syscon@ff770000
   - attempt to match compatible string 'rockchip,rk3399-grf'
   - found match at 'rk3399_syscon': 'rockchip,rk3399-grf' matches 'rockchip,rk3399-grf'
bind node phy@f780
   - attempt to match compatible string 'rockchip,rk3399-emmc-phy'
No match for node 'phy@f780'
bind node vop@ff8f0000
   - attempt to match compatible string 'rockchip,rk3399-vop-lit'
No match for node 'vop@ff8f0000'
bind node vop@ff900000
   - attempt to match compatible string 'rockchip,rk3399-vop-big'
No match for node 'vop@ff900000'
bind node pinctrl
   - attempt to match compatible string 'rockchip,rk3399-pinctrl'
No match for node 'pinctrl'
bind node chosen
Device 'chosen' has no compatible string
bind node syscon@ff620000
   - attempt to match compatible string 'rockchip,rk3399-cic'
   - found match at 'rk3399_syscon': 'rockchip,rk3399-grf' matches 'rockchip,rk3399-cic'
bind node dfi@ff630000
   - attempt to match compatible string 'rockchip,rk3399-dfi'
No match for node 'dfi@ff630000'
bind node dmc
   - attempt to match compatible string 'rockchip,rk3399-dmc'
   - found match at 'rockchip_rk3399_dmc': 'rockchip,rk3399-dmc' matches 'rockchip,rk3399-dmc'
bind node syscon@ff330000
   - attempt to match compatible string 'rockchip,rk3399-pmusgrf'
   - found match at 'rk3399_syscon': 'rockchip,rk3399-grf' matches 'rockchip,rk3399-pmusgrf'
ofnode_read_u32_array: rockchip,sdram-params: ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: reg: ofnode_read_bool: little-endian: false
ofnode_read_bool: big-endian: false
ofnode_read_bool: native-endian: false
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: assigned-clock-rates: <not found>
ofnode_read_prop: assigned-clock-rates: <not found>
Looking for clock-controller@ff760000
Looking for clock-controller@ff760000
   - result for clock-controller@ff760000: clock-controller@ff760000 (ret=0)
   - result for clock-controller@ff760000: clock-controller@ff760000 (ret=0)

One theory of mine is that somehow the normal device tree ends up in TPL, not the stripped down (flattened) version. The defconfig contains CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents" after all.

I just don't really understand how. Maybe I am also just dead wrong.