From: 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 Signed-off-by: Karol Kolacinski Signed-off-by: Jacob Keller Signed-off-by: Tony Nguyen --- 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 08af4ced50eb..e2f07d60fcdc 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_cgu_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; -- 2.47.1