drm/amdgpu: limit sdma instances to 2 for Arcturus in BU phase

Another 6 sdma instances do not work at present. Disable them to unblock KFD
for silicon bringup as a workaround

Signed-off-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 921a6dd..8d33cb7 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1602,7 +1602,7 @@ static int sdma_v4_0_early_init(void *handle)
        if (adev->asic_type == CHIP_RAVEN)
                adev->sdma.num_instances = 1;
        else if (adev->asic_type == CHIP_ARCTURUS)
-               adev->sdma.num_instances = 8;
+               adev->sdma.num_instances = 2;
        else
                adev->sdma.num_instances = 2;