Someone did compile Godot (v2) for PS2 and did run it but seems like they gave up trying to run/export any games with it[1][2]. Somehow, the PSP port[3] (also v2) is more successful[4].

[1]: https://github.com/ivandortulov/godot-ps2 [2]: https://itch.io/t/3658957/compiling-godot-for-the-playstatio... [3]: https://github.com/technicaljicama/godot-psp [4]: https://www.gamebrew.org/wiki/3D-Luck_PSP