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 2380759ddf480bd20dba8557ca292122fa49c1db..6db96fa1df0926d51df428f0fc5649ca731b22c9 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
@@ -1164,7 +1164,12 @@ 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),