Exactly the same issue with AMD Vega 56 videocard, also depends on vega10_gpu_info.bin:
May 29 11:49:37 debian1 kernel: [ 4.351872] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_gpu_info.bin
<..>
May 29 11:49:37 debian1 kernel: [ 4.352869] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_sos.bin
May 29 11:49:37 debian1 kernel: [ 4.352895] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_asd.bin
May 29 11:49:37 debian1 kernel: [ 4.352971] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_acg_smc.bin
May 29 11:49:37 debian1 kernel: [ 4.352996] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_pfp.bin
May 29 11:49:37 debian1 kernel: [ 4.353008] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_me.bin
May 29 11:49:37 debian1 kernel: [ 4.353019] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_ce.bin
May 29 11:49:37 debian1 kernel: [ 4.353031] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_rlc.bin
May 29 11:49:37 debian1 kernel: [ 4.353109] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_mec.bin
May 29 11:49:37 debian1 kernel: [ 4.353188] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_mec2.bin
May 29 11:49:37 debian1 kernel: [ 4.355194] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_sdma.bin
May 29 11:49:37 debian1 kernel: [ 4.355209] amdgpu 0000:1a:00.0: firmware: direct-loading firmware amdgpu/vega10_sdma1.bin