From: Alex Deucher alexander.deucher@amd.com
commit 6e80fb8ab04f6c4f377e2fd422bdd1855beb7371 upstream.
Fixes the rlc reference clock used for GPU timestamps. Value is 100Mhz. Confirmed with hardware team.
v2: reword commit message.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1480 Acked-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/amdgpu/soc15.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -276,6 +276,8 @@ static u32 soc15_get_xclk(struct amdgpu_ { u32 reference_clock = adev->clock.spll.reference_freq;
+ if (adev->asic_type == CHIP_RENOIR) + return 10000; if (adev->asic_type == CHIP_RAVEN) return reference_clock / 4;