FastRPC/NPU not working on Dragon Q6A - /dev/fastrpc* missing

[aliekudrot-bit]

Board: Radxa Dragon Q6A
OS: Ubuntu 24.04.4 LTS (Noble Numbat)
Issue: NPU (FastRPC) is not working

Steps taken:

1. sudo apt install fastrpc libcdsprpc1 fastrpc-test
2. fastrpc_test -a v68

Error:

• /dev/fastrpc* does not exist
• ERROR 0x72: Unable to create FastRPC session on domain 3
• All 3 tests FAILED

Expected: /dev/fastrpc-cdsp and other devices should be present
Actual: No fastrpc devices found in /dev/

lsmod | grep fastrpc → no output (driver not loaded)

Please provide kernel driver fix or correct firmware setup steps.

[zifeng-radxa]

please reinstall the R2 image