Commit 3cfb5aa1 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

Merge branch 'add-support-for-open-alliance-10base-t1x-macphy-serial-interface' 

Parthiban Veerasooran says:

====================
Add support for OPEN Alliance 10BASE-T1x MACPHY Serial Interface

This patch series contain the below updates,

- Adds support for OPEN Alliance 10BASE-T1x MACPHY Serial Interface
  in the net/ethernet/oa_tc6.c.

  Link to the spec:
  -----------------
  https://opensig.org/download/document/OPEN_Alliance_10BASET1x_MAC-PHY_Serial_Interface_V1.1.pdf

- Adds driver support for Microchip LAN8650/1 Rev.B1 10BASE-T1S MACPHY
  Ethernet driver in the net/ethernet/microchip/lan865x/lan865x.c.

  Link to the product:
  --------------------
  https://www.microchip.com/en-us/product/lan8650

Testing Details:
----------------
The driver performance was tested using iperf3 in the below two setups
separately.

Setup 1:
--------
Node 0 - Raspberry Pi 4 with LAN8650 MAC-PHY
Node 1 - Raspberry Pi 4 with EVB-LAN8670-USB USB Stick

Setup 2:
--------
Node 0 - SAMA7G54-EK with LAN8650 MAC-PHY
Node 1 - Raspberry Pi 4 with EVB-LAN8670-USB USB Stick

Achieved maximum of 9.4 Mbps.

Some systems like Raspberry Pi 4 need performance mode enabled to get the
proper clock speed for SPI. Refer below link for more details.

https://github.com/raspberrypi/linux/issues/3381#issuecomment-1144723750
====================

Link: https://patch.msgid.link/20240909082514.262942-1-Parthiban.Veerasooran@microchip.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parents e331673a ac49b950

Documentation/devicetree/bindings/net/microchip,lan8650.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/net/microchip,lan8650.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Microchip LAN8650/1 10BASE-T1S MACPHY Ethernet Controllers



maintainers:

  - Parthiban Veerasooran <parthiban.veerasooran@microchip.com>



description:

  The LAN8650/1 combines a Media Access Controller (MAC) and an Ethernet

  PHY to enable 10BASE‑T1S networks. The Ethernet Media Access Controller

  (MAC) module implements a 10 Mbps half duplex Ethernet MAC, compatible

  with the IEEE 802.3 standard and a 10BASE-T1S physical layer transceiver

  integrated into the LAN8650/1. The communication between the Host and

  the MAC-PHY is specified in the OPEN Alliance 10BASE-T1x MACPHY Serial

  Interface (TC6).



allOf:

  - $ref: /schemas/net/ethernet-controller.yaml#

  - $ref: /schemas/spi/spi-peripheral-props.yaml#



properties:

  compatible:

    oneOf:

      - const: microchip,lan8650

      - items:

          - const: microchip,lan8651

          - const: microchip,lan8650



  reg:

    maxItems: 1



  interrupts:

    description:

      Interrupt from MAC-PHY asserted in the event of Receive Chunks

      Available, Transmit Chunk Credits Available and Extended Status

      Event.

    maxItems: 1



  spi-max-frequency:

    minimum: 15000000

    maximum: 25000000



required:

  - compatible

  - reg

  - interrupts

  - spi-max-frequency



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    #include <dt-bindings/gpio/gpio.h>



    spi {

      #address-cells = <1>;

      #size-cells = <0>;



      ethernet@0 {

        compatible = "microchip,lan8651", "microchip,lan8650";

        reg = <0>;

        pinctrl-names = "default";

        pinctrl-0 = <&eth0_pins>;

        interrupt-parent = <&gpio>;

        interrupts = <6 IRQ_TYPE_EDGE_FALLING>;

        local-mac-address = [04 05 06 01 02 03];

        spi-max-frequency = <15000000>;

      };

    };

Documentation/networking/index.rst

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@@ -88,6 +88,7 @@ Contents: 
   nexthop-group-resilient

   nf_conntrack-sysctl

   nf_flowtable

   oa-tc6-framework

   openvswitch

   operstates

   packet_mmap

Documentation/networking/oa-tc6-framework.rst

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File added.

Preview size limit exceeded, changes collapsed.

MAINTAINERS

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@@ -14980,6 +14980,13 @@ L: netdev@vger.kernel.org 
S:	Maintained

F:	drivers/net/ethernet/microchip/lan743x_*









MICROCHIP LAN8650/1 10BASE-T1S MACPHY ETHERNET DRIVER









M:	Parthiban Veerasooran <parthiban.veerasooran@microchip.com>









L:	netdev@vger.kernel.org









S:	Maintained









F:	Documentation/devicetree/bindings/net/microchip,lan8650.yaml









F:	drivers/net/ethernet/microchip/lan865x/lan865x.c

















MICROCHIP LAN87xx/LAN937x T1 PHY DRIVER









M:	Arun Ramadoss <arun.ramadoss@microchip.com>









R:	UNGLinuxDriver@microchip.com








@@ -17113,6 +17120,14 @@ L:	linux-rdma@vger.kernel.org







S:	Supported









F:	drivers/infiniband/ulp/opa_vnic

















OPEN ALLIANCE 10BASE-T1S MACPHY SERIAL INTERFACE FRAMEWORK









M:	Parthiban Veerasooran <parthiban.veerasooran@microchip.com>









L:	netdev@vger.kernel.org









S:	Maintained









F:	Documentation/networking/oa-tc6-framework.rst









F:	drivers/include/linux/oa_tc6.h









F:	drivers/net/ethernet/oa_tc6.c

















OPEN FIRMWARE AND FLATTENED DEVICE TREE









M:	Rob Herring <robh@kernel.org>









M:	Saravana Kannan <saravanak@google.com>

























drivers/net/ethernet/Kconfig



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−0






























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@@ -158,6 +158,17 @@ config ETHOC







	help









	  Say Y here if you want to use the OpenCores 10/100 Mbps Ethernet MAC.



















config OA_TC6









	tristate "OPEN Alliance TC6 10BASE-T1x MAC-PHY support"









	depends on SPI









	select PHYLIB









	help









	  This library implements OPEN Alliance TC6 10BASE-T1x MAC-PHY









	  Serial Interface protocol for supporting 10BASE-T1x MAC-PHYs.



















	  To know the implementation details, refer documentation in









	  <file:Documentation/networking/oa-tc6-framework.rst>.



















source "drivers/net/ethernet/packetengines/Kconfig"









source "drivers/net/ethernet/pasemi/Kconfig"









source "drivers/net/ethernet/pensando/Kconfig"