[PATCH 8/9] net/ngbe: fix YT PHY mixed mode occasionally failing link

[Jiawen Wu]

Add to read link status register of UTP mode, to ensure link status of
mixed mode, for YT PHY.

Fixes: 1c44384fce76 ("net/ngbe: support custom PHY interfaces")
Cc: sta...@dpdk.org

Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
 drivers/net/ngbe/base/ngbe_phy_yt.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ngbe/base/ngbe_phy_yt.c 
b/drivers/net/ngbe/base/ngbe_phy_yt.c
index 562a0dede5..c88946f7c3 100644
--- a/drivers/net/ngbe/base/ngbe_phy_yt.c
+++ b/drivers/net/ngbe/base/ngbe_phy_yt.c
@@ -463,7 +463,16 @@ s32 ngbe_check_phy_link_yt(struct ngbe_hw *hw,
 
        if (phy_link) {
                *link_up = true;
+       } else {
+               status = ngbe_read_phy_reg_mdi(hw, YT_SPST, 0, &phy_data);
+               phy_link = phy_data & YT_SPST_LINK;
+               phy_speed = phy_data & YT_SPST_SPEED_MASK;
+
+               if (phy_link)
+                       *link_up = true;
+       }
 
+       if (*link_up) {
                if (phy_speed == YT_SPST_SPEED_1000M)
                        *speed = NGBE_LINK_SPEED_1GB_FULL;
                else if (phy_speed == YT_SPST_SPEED_100M)
-- 
2.27.0