netdev - [PATCH v8 net-next 0/4] Fix broken link on Xilinx's AXI Ethernet in SGMII mode

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Message-Id: <20220405091929.670951-1-andy.chiu@sifive.com>
Date:   Tue,  5 Apr 2022 17:19:25 +0800
From:   Andy Chiu <andy.chiu@...ive.com>
To:     davem@...emloft.net, michal.simek@...inx.com,
        radhey.shyam.pandey@...inx.com
Cc:     andrew@...n.ch, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzk+dt@...nel.org, linux@...linux.org.uk,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        Andy Chiu <andy.chiu@...ive.com>
Subject: [PATCH v8 net-next 0/4] Fix broken link on Xilinx's AXI Ethernet in SGMII mode

The Ethernet driver use phy-handle to reference the PCS/PMA PHY. This
could be a problem if one wants to configure an external PHY via phylink,
since it use the same phandle to get the PHY. To fix this, introduce a
dedicated pcs-handle to point to the PCS/PMA PHY and deprecate the use
of pointing it with phy-handle. A similar use case of pcs-handle can be
seen on dpaa2 as well.

--- patch v5 ---
 - Re-apply the v4 patch on the net tree.
 - Describe the pcs-handle DT binding at ethernet-controller level.
--- patch v6 ---
 - Remove "preferrably" to clearify usage of pcs_handle.
--- patch v7 ---
 - Rebase the patch on latest net/master
--- patch v8 ---
 - Rebase the patch on net-next/master
 - Add "reviewed-by" tag in PATCH 3/4: dt-bindings: net: add pcs-handle
   attribute
 - Remove "fix" tag in last commit message since this is not a critical
   bug and will not be back ported to stable.

Andy Chiu (4):
  net: axienet: setup mdio unconditionally
  net: axienet: factor out phy_node in struct axienet_local
  dt-bindings: net: add pcs-handle attribute
  net: axiemac: use a phandle to reference pcs_phy

 .../bindings/net/ethernet-controller.yaml     |  6 ++++
 .../bindings/net/xilinx_axienet.txt           |  8 ++++-
 drivers/net/ethernet/xilinx/xilinx_axienet.h  |  2 --
 .../net/ethernet/xilinx/xilinx_axienet_main.c | 33 ++++++++++---------
 4 files changed, 31 insertions(+), 18 deletions(-)

-- 
2.34.1