From bef8f175e6b208f58222e038be7072d06da1704e Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 5 Feb 2021 10:40:09 +0000 Subject: [PATCH] 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 Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 4 +++- drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 5 +++-- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h index c3d456c45102a..9b6a89709ce14 100644 --- 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 3ddfb40eb5e4d..ccaf7e35abeba 100644 --- 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; -- 2.39.5