[Intel-wired-lan] [PATCH 1/8] ice: clear time_sync_en field for E825-C during reprogramming

[Jacob Keller <jacob.e.keller@intel.com>]

When programming the Clock Generation Unit for E285-C hardware, we need
to clear the time_sync_en bit of the DWORD 9 before we set the
frequency.

Co-developed-by: Karol Kolacinski <karol.kolacinski@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_tspll.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_tspll.c b/drivers/net/ethernet/intel/ice/ice_tspll.c
index 08af4ced50eb877dce5944d87a90d0dcdb49ff2e..5a2ddd3feba2f96d14c817a697423219cadc45e6 100644
--- a/drivers/net/ethernet/intel/ice/ice_tspll.c
+++ b/drivers/net/ethernet/intel/ice/ice_tspll.c
@@ -342,6 +342,14 @@ static int ice_tspll_cfg_e825c(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
 			return err;
 	}
 
+	if (dw9.time_sync_en) {
+		dw9.time_sync_en = 0;
+
+		err = ice_write_cgue_reg(hw, ICE_CGU_R9, dw9.val);
+		if (err)
+			return err;
+	}
+
 	/* Set the frequency */
 	dw9.time_ref_freq_sel = clk_freq;
 
@@ -353,6 +361,7 @@ static int ice_tspll_cfg_e825c(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
 		dw9.time_ref_en = 1;
 		dw9.clk_eref0_en = 0;
 	}
+	dw9.time_sync_en = 1;
 	err = ice_write_cgu_reg(hw, ICE_CGU_R9, dw9.val);
 	if (err)
 		return err;

-- 
2.48.1.397.gec9d649cc640