From 6e80fb8ab04f6c4f377e2fd422bdd1855beb7371 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 16 Feb 2021 10:57:00 -0500 Subject: [PATCH] drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2) MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/soc15.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index e865495..1221aa6 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -233,6 +233,8 @@ static u32 soc15_get_xclk(struct amdgpu_device *adev) { 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; -- 2.7.4