sfc: SFT9001: Enable robust link training

Enable a firmware option that appears to be necessary for reliable
operation.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 9ecb77da9545..19cfc318954c 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -67,6 +67,8 @@
 #define PMA_PMD_EXT_CLK312_WIDTH 1
 #define PMA_PMD_EXT_LPOWER_LBN  12
 #define PMA_PMD_EXT_LPOWER_WIDTH 1
+#define PMA_PMD_EXT_ROBUST_LBN  14
+#define PMA_PMD_EXT_ROBUST_WIDTH 1
 #define PMA_PMD_EXT_SSR_LBN     15
 #define PMA_PMD_EXT_SSR_WIDTH   1
 
@@ -284,7 +286,9 @@ static int tenxpress_init(struct efx_nic *efx)
                                          PMA_PMD_XCONTROL_REG);
                 reg |= ((1 << PMA_PMD_EXT_GMII_EN_LBN) |
                         (1 << PMA_PMD_EXT_CLK_OUT_LBN) |
-                        (1 << PMA_PMD_EXT_CLK312_LBN));
+                        (1 << PMA_PMD_EXT_CLK312_LBN) |
+                        (1 << PMA_PMD_EXT_ROBUST_LBN));
+
                 mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
                                     PMA_PMD_XCONTROL_REG, reg);
                 mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_C22EXT,