From: Wenzhuo Lu <wenzhuo.lu@intel.com>
Date: Fri, 20 Nov 2015 07:17:52 +0000 (+0800)
Subject: ixgbe/base: move X550 MDIO clock speed init
X-Git-Tag: spdx-start~7689
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=28ee76db181f1905fc5009599352e1200c691320;p=dpdk.git

ixgbe/base: move X550 MDIO clock speed init

The x550 MDIO clock speed must be configured prior to first MDIO read or
write. The default MDIO clock speed is not valid, therefore the driver
is configuring a valid speed prior to reading the copper PHY device id.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---

diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index c60a819694..4ab69c43dc 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -1532,9 +1532,14 @@ s32 ixgbe_reset_hw_X550em(struct ixgbe_hw *hw)
 	/* flush pending Tx transactions */
 	ixgbe_clear_tx_pending(hw);
 
-	/* PHY ops must be identified and initialized prior to reset */
+	if (hw->device_id == IXGBE_DEV_ID_X550EM_X_10G_T) {
+		/* Config MDIO clock speed before the first MDIO PHY access */
+		hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
+		hlreg0 &= ~IXGBE_HLREG0_MDCSPD;
+		IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
+	}
 
-	/* Identify PHY and related function pointers */
+	/* PHY ops must be identified and initialized prior to reset */
 	status = hw->phy.ops.init(hw);
 
 	if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
@@ -1611,13 +1616,6 @@ mac_reset_top:
 	hw->mac.num_rar_entries = 128;
 	hw->mac.ops.init_rx_addrs(hw);
 
-	if (hw->device_id == IXGBE_DEV_ID_X550EM_X_10G_T) {
-		/* Config MDIO clock speed. */
-		hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
-		hlreg0 &= ~IXGBE_HLREG0_MDCSPD;
-		IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
-	}
-
 	if (hw->device_id == IXGBE_DEV_ID_X550EM_X_SFP)
 		ixgbe_setup_mux_ctl(hw);