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WiFi not recognized on cold boot but present after reboot

We have several SBC Nanopi R5C. This beautiful little device works fine with the manufacturer OS, but due to a very strange configuration of this OS (Debian based, but installed on seven partitions), it is impossible to compile with this OS. Since we need to compile our own module, we switched to a pure Debian 12, using the Dietpi distribution. Here we have a very strange behaviour.
On cold boots, the WiFi is not visible in lspci, and wlan0 is not present. When we reboot, all is fine, the WiFi card is visible in lspci and the WiFi works normally. The error message in the boot log, after a cold boot is :

Nanopi R5C WiFi not recognized on cold boot

We have several SBC Nanopi R5C. This beautiful little device works fine with the manufacturer OS, but due to a very strange configuration of this OS (Debian based, but installed on seven partitions), it is impossible to compile with this OS. Since we need to compile our own module, we switched to a pure Debian 12, using the Dietpi distribution. Here we have a very strange behaviour.
On cold boots, the WiFi is not visible in lspci, and wlan0 is not present. When we reboot, all is fine, the WiFi card is visible in lspci and the WiFi works normally. The error message in the boot log, after a cold boot is :