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drm/amdgpu: Read memory vendor information

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Read VRAM vendor information from scratch register for GC v9.4.3 and
GC v9.5.0 SOCs.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2025-09-10 11:38:08 +05:30 committed by Alex Deucher
parent e09b081d8a
commit c3cdc3bebd
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
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@ -1834,11 +1834,19 @@ static void gmc_v9_0_save_registers(struct amdgpu_device *adev)
static void gmc_v9_4_3_init_vram_info(struct amdgpu_device *adev)
{
static const u32 regBIF_BIOS_SCRATCH_4 = 0x50;
u32 vram_info;
adev->gmc.vram_type = AMDGPU_VRAM_TYPE_HBM;
adev->gmc.vram_width = 128 * 64;
if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0))
adev->gmc.vram_type = AMDGPU_VRAM_TYPE_HBM3E;
if (!(adev->flags & AMD_IS_APU) && !amdgpu_sriov_vf(adev)) {
vram_info = RREG32(regBIF_BIOS_SCRATCH_4);
adev->gmc.vram_vendor = vram_info & 0xF;
}
}
static int gmc_v9_0_sw_init(struct amdgpu_ip_block *ip_block)