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drm/amdgpu/atomfirmware: fix LPDDR5 width reporting

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LPDDR5 channels are 32 bit rather than 64, report the width properly
in the log.

v2: Only LPDDR5 are 32 bits per channel.  DDR5 is 64 bits per channel

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2468
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2023-06-07 12:43:30 -04:00
parent 4e3f85d1c0
commit c09b3bf736
1 changed files with 12 additions and 6 deletions
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18
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
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@@ -327,10 +327,13 @@ amdgpu_atomfirmware_get_vram_info(struct amdgpu_device *adev,
mem_channel_number = igp_info->v11.umachannelnumber;
if (!mem_channel_number)
mem_channel_number = 1;
/* channel width is 64 */
if (vram_width)
*vram_width = mem_channel_number * 64;
mem_type = igp_info->v11.memorytype;
if (mem_type == LpDdr5MemType)
mem_channel_width = 32;
else
mem_channel_width = 64;
if (vram_width)
*vram_width = mem_channel_number * mem_channel_width;
if (vram_type)
*vram_type = convert_atom_mem_type_to_vram_type(adev, mem_type);
break;
@@ -345,10 +348,13 @@ amdgpu_atomfirmware_get_vram_info(struct amdgpu_device *adev,
mem_channel_number = igp_info->v21.umachannelnumber;
if (!mem_channel_number)
mem_channel_number = 1;
/* channel width is 64 */
if (vram_width)
*vram_width = mem_channel_number * 64;
mem_type = igp_info->v21.memorytype;
if (mem_type == LpDdr5MemType)
mem_channel_width = 32;
else
mem_channel_width = 64;
if (vram_width)
*vram_width = mem_channel_number * mem_channel_width;
if (vram_type)
*vram_type = convert_atom_mem_type_to_vram_type(adev, mem_type);
break;