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Date:   Sat, 13 May 2023 16:28:21 +0900
From:   Greg KH <gregkh@linuxfoundation.org>
To:     "Gong, Richard" <richard.gong@amd.com>
Cc:     stable@vger.kernel.org,
        Mario Limonciello <mario.limonciello@amd.com>
Subject: Re: AMD Navi3x dGPU experience improvement
Message-ID: <2023051312-visible-badland-1311@gregkh>
References: <5ca2e61d-08d6-3070-f281-e2483cb7718a@amd.com>
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On Mon, May 08, 2023 at 08:19:41AM -0500, Gong, Richard wrote:
> Hi,
> 
> Since AMD introduced Navi3x dGPUs, setting them up is more difficult than it
> need to be, as you need the GPU firmware binaries present in the filesystem
> before the kernel drivers can be loaded. If you don't, you'll just "hang" at
> a black screen. This is awkward because you must do
> modprobe.blacklist=amdgpu and then load the file.
> 
> A large commit series went into 6.3 that improve this experience, but not
> all of it is stable materiel.
> 
> As the dGPUs are supported on 6.1.y and 6.2.y, we can improve the experience
> specifically for these new produces by back-porting a small subset of
> commits that correspond to firmware files that are uniquely loaded by the
> new products. With these commits amdgpu driver will return an error code and
> you can continue to use framebuffer provided by UEFI GOP driver until you
> have GPU firmware binaries loaded onto your system.
> 
> Commits needed for 6.2.y
> 	cc42e76e7de5 "drm/amd: Load MES microcode during early_init"
> 	2210af50ae7f "drm/amd: Add a new helper for loading/validating microcode"
> 	11e0b0067ec0 "drm/amd: Use `amdgpu_ucode_*` helpers for MES"
> 
> Commits needed for 6.1.y
> 	6040517e4a29 "drm/amdgpu: remove deprecated MES version vars"
> 	cc42e76e7de5 "drm/amd: Load MES microcode during early_init"
> 	2210af50ae7f "drm/amd: Add a new helper for loading/validating microcode"
> 	11e0b0067ec0 "drm/amd: Use `amdgpu_ucode_*` helpers for MES"

All now queued up, thanks.

greg k-h