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| author |   Tom St Denis <tom.stdenis@amd.com> | 2018-02-26 09:09:26 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-02-28 15:19:21 -0500 |
| commit | 82d0ece957bcd0e6d500759b205508dbda1bc265 (patch) | |
| tree | cc51e290db6a567c5e6ddafc91968f26b0669e0a /drivers | |
| parent | drm/amdgpu: fix&cleanups for wb_clear (diff) | |
| download | linux-dev-82d0ece957bcd0e6d500759b205508dbda1bc265.tar.xz linux-dev-82d0ece957bcd0e6d500759b205508dbda1bc265.zip | |
drm/amd/amdgpu: Correct VRAM width for APUs with GMC9
DDR4 has a 64-bit width not 128-bits. It was reporting
twice the width. Tested with my Ryzen 2400G.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 2719937e09d6..fd6370982c9a 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -682,7 +682,10 @@ static int gmc_v9_0_mc_init(struct amdgpu_device *adev) adev->mc.vram_width = amdgpu_atomfirmware_get_vram_width(adev); if (!adev->mc.vram_width) { /* hbm memory channel size */ - chansize = 128; + if (adev->flags & AMD_IS_APU) + chansize = 64; + else + chansize = 128; tmp = RREG32_SOC15(DF, 0, mmDF_CS_AON0_DramBaseAddress0); tmp &= DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK; |