net: dpaa2-mac: add backplane link mode support

Add support for backplane link mode, which is, according to discussions
with NXP earlier in the year, is a mode where the OS (Linux) is able to
manage the PCS and Serdes itself.

This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
index c3d456c45102ad8501505c34b87856f9a15555e4..9b6a89709ce149c2c1fbf0be38b7cce49be5218b 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -695,7 +695,9 @@ static inline unsigned int dpaa2_eth_rx_head_room(struct dpaa2_eth_priv *priv)
 
 static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv)
 {
-       if (priv->mac && priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY)
+       if (priv->mac &&
+           (priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
+            priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
                return true;
 
        return false;

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
index 3ddfb40eb5e4dc8514bad62dbf79917f521e704a..ccaf7e35abeba6947e417b25c19527062258cd48 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -315,8 +315,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac)
                goto err_put_node;
        }
 
-       if (mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
-           mac->attr.eth_if != DPMAC_ETH_IF_RGMII) {
+       if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
+            mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
+           mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
                err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
                if (err)
                        goto err_put_node;