drm/amd/pp: Fix fan's RPM setting not work on VI/Vega10

set the target rpm value to wrong register.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_thermal.c

@@ -272,7 +272,7 @@ int smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
 	tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
 
 	PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
-				CG_TACH_STATUS, TACH_PERIOD, tach_period);
+				CG_TACH_CTRL, TARGET_PERIOD, tach_period);
 
 	return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);
 }

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_thermal.c

@@ -322,9 +322,9 @@ int vega10_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
 	if (!result) {
 		crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
 		tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
-		WREG32_SOC15(THM, 0, mmCG_TACH_STATUS,
-				REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_STATUS),
-					CG_TACH_STATUS, TACH_PERIOD,
+		WREG32_SOC15(THM, 0, mmCG_TACH_CTRL,
+				REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),
+					CG_TACH_CTRL, TARGET_PERIOD,
 					tach_period));
 	}
 	return vega10_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);