linux-kernel - [PATCH AUTOSEL 5.10 028/217] drm/amdgpu: set LDS_CONFIG=0x20 on Navy Flounder to fix a GPU hang (v2)

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Date:   Tue, 22 Dec 2020 21:13:17 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Marek Olšák <marek.olsak@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.10 028/217] drm/amdgpu: set LDS_CONFIG=0x20 on Navy Flounder to fix a GPU hang (v2)

From: Marek Olšák <marek.olsak@....com>

[ Upstream commit 4b60bb0dde1baf347540253f856c54bc908e525c ]

v2: squash in build fix

Acked-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Marek Olšák <marek.olsak@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 55f4b8c3b9338..66bdfbdcdf2b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -3183,7 +3183,10 @@ static const struct soc15_reg_golden golden_settings_gc_10_3_2[] =
 	SOC15_REG_GOLDEN_VALUE(GC, 0, mmSQ_PERFCOUNTER9_SELECT, 0xf0f001ff, 0x00000000),
 	SOC15_REG_GOLDEN_VALUE(GC, 0, mmTA_CNTL_AUX, 0xfff7ffff, 0x01030000),
 	SOC15_REG_GOLDEN_VALUE(GC, 0, mmUTCL1_CTRL, 0xffbfffff, 0x00a00000),
-	SOC15_REG_GOLDEN_VALUE(GC, 0, mmVGT_GS_MAX_WAVE_ID, 0x00000fff, 0x000003ff)
+	SOC15_REG_GOLDEN_VALUE(GC, 0, mmVGT_GS_MAX_WAVE_ID, 0x00000fff, 0x000003ff),
+
+	/* This is not in GDB yet. Don't remove it. It fixes a GPU hang on Navy Flounder. */
+	SOC15_REG_GOLDEN_VALUE(GC, 0, mmLDS_CONFIG,  0x00000020, 0x00000020),
 };
 
 #define DEFAULT_SH_MEM_CONFIG \
-- 
2.27.0