phy: sparx5-serdes: remove power up of all CMUs

CMUs should not be powered up by default anymore, so remove responsible
code.
Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Link: https://lore.kernel.org/r/20230417180335.2787494-7-daniel.machon@microchip.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/microchip/sparx5_serdes.c

@@ -1062,24 +1062,6 @@ static int sparx5_cmu_cfg(struct sparx5_serdes_private *priv, u32 cmu_idx)
 	return sparx5_cmu_apply_cfg(priv, cmu_idx, cmu_tgt, cmu_cfg_tgt, spd10g);
 }
 
-static int sparx5_serdes_cmu_enable(struct sparx5_serdes_private *priv)
-{
-	int idx, err = 0;
-
-	if (!priv->cmu_enabled) {
-		for (idx = 0; idx < SPX5_CMU_MAX; idx++) {
-			err  = sparx5_cmu_cfg(priv, idx);
-			if (err) {
-				dev_err(priv->dev, "CMU %u, error: %d\n", idx, err);
-				goto leave;
-			}
-		}
-		priv->cmu_enabled = true;
-	}
-leave:
-	return err;
-}
-
 /* Map of 6G/10G serdes mode and index to CMU index. */
 static const int
 sparx5_serdes_cmu_map[SPX5_SD10G28_CMU_MAX][SPX5_SERDES_6G10G_CNT] = {
@@ -2236,10 +2218,6 @@ static int sparx5_serdes_config(struct sparx5_serdes_macro *macro)
 	int serdesmode;
 	int err;
 
-	err = sparx5_serdes_cmu_enable(macro->priv);
-	if (err)
-		return err;
-
 	serdesmode = sparx5_serdes_get_serdesmode(macro->portmode, macro->speed);
 	if (serdesmode < 0) {
 		dev_err(dev, "SerDes %u, interface not supported: %s\n",
@@ -2331,9 +2309,6 @@ static int sparx5_serdes_reset(struct phy *phy)
 	struct sparx5_serdes_macro *macro = phy_get_drvdata(phy);
 	int err;
 
-	err = sparx5_serdes_cmu_enable(macro->priv);
-	if (err)
-		return err;
 	if (macro->serdestype == SPX5_SDT_25G)
 		err = sparx5_sd25g28_config(macro, true);
 	else

drivers/phy/microchip/sparx5_serdes.h

@@ -30,7 +30,6 @@ struct sparx5_serdes_private {
 	struct device *dev;
 	void __iomem *regs[NUM_TARGETS];
 	struct phy *phys[SPX5_SERDES_MAX];
-	bool cmu_enabled;
 	unsigned long coreclock;
 };