[Intel-wired-lan] [PATCH v4 08/15] ice: clear time_sync_en field for E825-C during reprogramming

[Jacob Keller]

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.kolacin...@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacin...@intel.com>
Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_tspll.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_tspll.c 
b/drivers/net/ethernet/intel/ice/ice_tspll.c
index 
2cc728c2b67897940af75cb0bc3bfaf5fd8e6869..8de1ad1da8346d4be4224b923de3baeffc954198
 100644
--- a/drivers/net/ethernet/intel/ice/ice_tspll.c
+++ b/drivers/net/ethernet/intel/ice/ice_tspll.c
@@ -285,6 +285,11 @@ static int ice_tspll_cfg_e825c(struct ice_hw *hw, enum 
ice_tspll_freq clk_freq,
                ICE_WRITE_CGU_REG_OR_DIE(hw, ICE_CGU_R23, dw23.val);
        }
 
+       if (dw9.time_sync_en) {
+               dw9.time_sync_en = 0;
+               ICE_WRITE_CGU_REG_OR_DIE(hw, ICE_CGU_R9, dw9.val);
+       }
+
        /* Set the frequency */
        dw9.time_ref_freq_sel = clk_freq;
 
@@ -296,6 +301,7 @@ 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;
        ICE_WRITE_CGU_REG_OR_DIE(hw, ICE_CGU_R9, dw9.val);
 
        /* Choose the referenced frequency */

-- 
2.48.1.397.gec9d649cc640