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From 736afe68bb73cd484960e404f0f1dd1d70187a2e Mon Sep 17 00:00:00 2001
From: Thomas Lim <Thomas.Lim@amd.com>
Date: Tue, 7 May 2019 15:08:22 -0500
Subject: [PATCH 2511/2940] drm/amd/display: Add power down display on boot
flag
[Why]
Due to the generic introduction of seamless boot, the display is no
longer blanked upon boot. However, this causes corruption on some
systems that does not lock the memory in the non-secure boot case,
resulting in brief corruption on boot due to garbage being written into
the frame buffer.
[How]
Add a flag, read during DC init, to determine whether display should be
blanked on boot. Default to true.
Signed-off-by: Thomas Lim <Thomas.Lim@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 46a02b945a4d..2db38255e59c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -557,6 +557,7 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
init_data.flags.fbc_support = true;
init_data.flags.power_down_display_on_boot = true;
+
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
init_data.soc_bounding_box = adev->dm.soc_bounding_box;
#endif
--
2.17.1
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