linux-kernel - [PATCH v1 0/5] ARM: Add GXP UMAC Support

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Date:   Fri, 21 Jul 2023 16:20:39 -0500
From:   nick.hawkins@....com
To:     verdun@....com, nick.hawkins@....com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/5] ARM: Add GXP UMAC Support

From: Nick Hawkins <nick.hawkins@....com>

The GXP contains two Ethernet MACs that can be
connected externally to several physical devices. From an external
interface perspective the BMC provides two SERDES interface connections
capable of either SGMII or 1000Base-X operation. The BMC also provides
a RMII interface for sideband connections to external Ethernet controllers.

The primary MAC (umac0) can be mapped to either SGMII/1000-BaseX
SERDES interface.  The secondary MAC (umac1) can be mapped to only
the second SGMII/1000-Base X Serdes interface or it can be mapped for
RMII sideband.

The MDIO(mdio0) interface from the primary MAC (umac0) is used for
external PHY status and configuration. The MDIO(mdio1) interface from
the secondary MAC (umac1) is routed to the SGMII/100Base-X IP blocks
on the two SERDES interface connections.

Nick Hawkins (5):
  dt-bindings: net: Add HPE GXP UMAC MDIO
  net: hpe: Add GXP UMAC MDIO
  dt-bindings: net: Add HPE GXP UMAC
  net: hpe: Add GXP UMAC Driver
  MAINTAINERS: HPE: Add GXP UMAC Networking Files

 .../bindings/net/hpe,gxp-umac-mdio.yaml       |  51 +
 .../devicetree/bindings/net/hpe,gxp-umac.yaml | 111 +++
 MAINTAINERS                                   |   3 +
 drivers/net/ethernet/Kconfig                  |   1 +
 drivers/net/ethernet/Makefile                 |   1 +
 drivers/net/ethernet/hpe/Kconfig              |  43 +
 drivers/net/ethernet/hpe/Makefile             |   2 +
 drivers/net/ethernet/hpe/gxp-umac-mdio.c      | 158 +++
 drivers/net/ethernet/hpe/gxp-umac.c           | 911 ++++++++++++++++++
 drivers/net/ethernet/hpe/gxp-umac.h           |  89 ++
 10 files changed, 1370 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.yaml
 create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac.yaml
 create mode 100644 drivers/net/ethernet/hpe/Kconfig
 create mode 100644 drivers/net/ethernet/hpe/Makefile
 create mode 100644 drivers/net/ethernet/hpe/gxp-umac-mdio.c
 create mode 100644 drivers/net/ethernet/hpe/gxp-umac.c
 create mode 100644 drivers/net/ethernet/hpe/gxp-umac.h

-- 
2.17.1