[PATCH net-next v2 02/13] amd-xgbe: Set the MII control width for the MAC interface
flat view
STALE3352d
From: Tom Lendacky <thomas.lendacky@amd.com>
Date: 2017-08-18 14:02:36
Subsystem:
amd xgbe driver, networking drivers, the rest · Maintainers:
Raju Rangoju, Prashanth Kumar K R, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
When running in SGMII mode at speeds below 1000Mbps, the auto-negotition control register must set the MII control width for the MAC interface to be 8-bits wide. By default the width is 4-bits. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- drivers/net/ethernet/amd/xgbe/xgbe-common.h | 1 + drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 2 ++ 2 files changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
index 9795419..d07edf9 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h@@ -1339,6 +1339,7 @@ #define XGBE_AN_CL37_PCS_MODE_BASEX 0x00 #define XGBE_AN_CL37_PCS_MODE_SGMII 0x04 #define XGBE_AN_CL37_TX_CONFIG_MASK 0x08 +#define XGBE_AN_CL37_MII_CTRL_8BIT 0x0100 /* Bit setting and getting macros * The get macro will extract the current bit field value from within
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
index 8068491..2222bbf8 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c@@ -982,6 +982,8 @@ static void xgbe_an37_init(struct xgbe_prv_data *pdata) break; } + reg |= XGBE_AN_CL37_MII_CTRL_8BIT; + XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg); netif_dbg(pdata, link, pdata->netdev, "CL37 AN (%s) initialized\n",