netdev - [PATCH net-next 2/8] ice: read TSPLL registers again before reporting status

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Message-ID: <20250626162921.1173068-3-anthony.l.nguyen@intel.com>
Date: Thu, 26 Jun 2025 09:29:13 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Jacob Keller <jacob.e.keller@...el.com>,
	anthony.l.nguyen@...el.com,
	karol.kolacinski@...el.com,
	przemyslaw.kitszel@...el.com,
	richardcochran@...il.com
Subject: [PATCH net-next 2/8] ice: read TSPLL registers again before reporting status

From: Jacob Keller <jacob.e.keller@...el.com>

After programming the TSPLL, re-read the registers before reporting status.
This ensures the debug log message will show what was actually programmed,
rather than relying on a cached value.

Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_tspll.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_tspll.c b/drivers/net/ethernet/intel/ice/ice_tspll.c
index e2f07d60fcdc..440aba817b9c 100644
--- a/drivers/net/ethernet/intel/ice/ice_tspll.c
+++ b/drivers/net/ethernet/intel/ice/ice_tspll.c
@@ -239,8 +239,15 @@ static int ice_tspll_cfg_e82x(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
 		return -EBUSY;
 	}
 
-	ice_tspll_log_cfg(hw, dw24.ts_pll_enable, clk_src, clk_freq, true,
-			  true);
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &dw9.val);
+	if (err)
+		return err;
+	err = ice_read_cgu_reg(hw, ICE_CGU_R24, &dw24.val);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, dw24.ts_pll_enable, dw24.time_ref_sel,
+			  dw9.time_ref_freq_sel, true, false);
 
 	return 0;
 }
@@ -433,8 +440,15 @@ static int ice_tspll_cfg_e825c(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
 		return -EBUSY;
 	}
 
-	ice_tspll_log_cfg(hw, dw23.ts_pll_enable, clk_src, clk_freq, true,
-			  true);
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &dw9.val);
+	if (err)
+		return err;
+	err = ice_read_cgu_reg(hw, ICE_CGU_R23, &dw23.val);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, dw23.ts_pll_enable, dw23.time_ref_sel,
+			  dw9.time_ref_freq_sel, true, true);
 
 	return 0;
 }
-- 
2.47.1