* [PATCH] drm/amdgpu/pm/smu11: Fix fan set speed bug
@ 2020-12-01 6:10 Arunpravin
0 siblings, 0 replies; only message in thread
From: Arunpravin @ 2020-12-01 6:10 UTC (permalink / raw)
To: amd-gfx; +Cc: Arunpravin
Fix fan set speed calculation.
Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam@amd.com>
Suggested-by: Kenneth Feng <kenneth.feng@amd.com>
---
drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
index 62c34a01a3e1..624065d3c079 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
@@ -1187,7 +1187,12 @@ int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,
if (ret)
return ret;
- crystal_clock_freq = amdgpu_asic_get_xclk(adev);
+ /*
+ * crystal_clock_freq div by 4 is required since the fan control
+ * module refers to 25MHz
+ */
+
+ crystal_clock_freq = amdgpu_asic_get_xclk(adev) / 4;
tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
WREG32_SOC15(THM, 0, mmCG_TACH_CTRL,
REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),
--
2.17.1
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2020-12-01 6:10 [PATCH] drm/amdgpu/pm/smu11: Fix fan set speed bug Arunpravin
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