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From c1cf0104be3ec75488c3aeaeb3b6d7f1a5daae45 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 1955/2940] drm/amd/display: Don't load DMCU for Raven 1
[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.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
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 834adb729c6d..6750d74e1c85 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -29,6 +29,7 @@
#include "dm_services_types.h"
#include "dc.h"
#include "dc/inc/core_types.h"
+#include "dal_asic_id.h"
#include "vid.h"
#include "amdgpu.h"
@@ -640,7 +641,7 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
static int load_dmcu_fw(struct amdgpu_device *adev)
{
- const char *fw_name_dmcu;
+ const char *fw_name_dmcu = NULL;
int r;
const struct dmcu_firmware_header_v1_0 *hdr;
@@ -663,7 +664,14 @@ static int load_dmcu_fw(struct amdgpu_device *adev)
case CHIP_VEGA20:
return 0;
case CHIP_RAVEN:
- fw_name_dmcu = FIRMWARE_RAVEN_DMCU;
+ 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
+ else
+ return 0;
break;
default:
DRM_ERROR("Unsupported ASIC type: 0x%X\n", adev->asic_type);
--
2.17.1
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