diff mbox series

[5.4,258/340] drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2)

Message ID 20210301161100.996888699@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH March 1, 2021, 4:13 p.m. UTC 
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(+)
diff mbox series

Patch

--- 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;