[AMD Official Use Only - General]

Reviewed-by: Alex Deucher <[email protected]>
________________________________
From: Limonciello, Mario <[email protected]>
Sent: Monday, September 25, 2023 9:44 PM
To: [email protected] <[email protected]>
Cc: Limonciello, Mario <[email protected]>; Deucher, Alexander 
<[email protected]>; Xu, Feifei <[email protected]>
Subject: [PATCH] drm/amd: Limit seamless boot by default to APUs

A hang is reported on DCN 3.2 with seamless boot enabled.
As the benefits come from an eDP setup, limit it to only enabled
by default with APUs.

Suggested-by: [email protected]
Reported-by: [email protected]
Closes: 
https://lore.kernel.org/amd-gfx/[email protected]/T/#m2887e919d7c01b2a4860d2261b366d22e070f309
Signed-off-by: Mario Limonciello <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 22c0e035de81..5436d7a34014 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1380,6 +1380,9 @@ bool amdgpu_device_seamless_boot_supported(struct 
amdgpu_device *adev)
                 return false;
         }

+       if (!(adev->flags & AMD_IS_APU))
+               return false;
+
         if (adev->mman.keep_stolen_vga_memory)
                 return false;

--
2.34.1

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