Rather than checking the CONGIG_MEMSIZE register as that may not be reliable on some APUs. v2: The scratch register is only used on CIK+ Reviewed-by: Christian König <christian.koenig at amd.com> Signed-off-by: Alex Deucher <alexander.deucher at amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 63f4bed..8042a8a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -722,7 +722,12 @@ bool amdgpu_need_post(struct amdgpu_device *adev) adev->has_hw_reset = false; return true; } - /* then check MEM_SIZE, in case the crtcs are off */ + + /* bios scratch used on CIK+ */ + if (adev->asic_type >= CHIP_BONAIRE) + return amdgpu_atombios_scratch_need_asic_init(adev); + + /* check MEM_SIZE for older asics */ reg = amdgpu_asic_get_config_memsize(adev); if ((reg != 0) && (reg != 0xffffffff)) -- 2.5.5
