Comment # 11 on bug 1208938 from Danil S

kernel 6.2.4-1-default
boot works without amd_iommu=off 

in kernel 6.2.2 it was not working without turning off iommu

but with kernel 6.2.4-1-default - integrated AMD GPU does not work
journalctl boot log:

21:23:49 localhost kernel: kfd kfd: amdgpu: Allocated 3969056 bytes on gart
21:23:49 localhost kernel: amdgpu: sdma_bitmap: 3
21:23:49 localhost kernel: memmap_init_zone_device initialised 131072 pages in
0ms
21:23:49 localhost kernel: amdgpu: HMM registered 512MB device memory
21:23:49 localhost kernel: kfd kfd: amdgpu: Failed to resume IOMMU for device
1002:15d8
21:23:49 localhost kernel: kfd kfd: amdgpu: device 1002:15d8 NOT added due to
errors