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From 0ccffea73107d61a600a5db25acea4242e35e6a5 Mon Sep 17 00:00:00 2001
From: Harry Wentland <harry.wentland@amd.com>
Date: Mon, 29 Apr 2019 09:39:15 -0400
Subject: [PATCH 1999/2940] drm/amd/display: Don't load DMCU for Raven 1 (v2)
[WHY]
Some early Raven boards had a bad SBIOS that doesn't play nicely with
the DMCU FW. We thought the issues were fixed by ignoring errors on DMCU
load but that doesn't seem to be the case. We've still seen reports of
users unable to boot their systems at all.
[HOW]
Disable DMCU load on Raven 1. Only load it for Raven 2 and Picasso.
v2: Fix ifdef (Alex)
Change-Id: I67926d5a6bd91e2032cc5039754bde0d6ba3ad9b
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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 6750d74e1c85..7369c00b24b7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -664,9 +664,9 @@ static int load_dmcu_fw(struct amdgpu_device *adev)
case CHIP_VEGA20:
return 0;
case CHIP_RAVEN:
+#if defined(CONFIG_DRM_AMD_DC_DCN1_01)
if (ASICREV_IS_PICASSO(adev->external_rev_id))
fw_name_dmcu = FIRMWARE_RAVEN_DMCU;
-#if defined(CONFIG_DRM_AMD_DC_DCN1_01)
else if (ASICREV_IS_RAVEN2(adev->external_rev_id))
fw_name_dmcu = FIRMWARE_RAVEN_DMCU;
#endif
--
2.17.1
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