Commit c09b3bf7 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/atomfirmware: fix LPDDR5 width reporting 

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: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4e3f85d1

drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c

+12 −6
Original line number Diff line number Diff line
@@ -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;