linux-kernel - [PATCH v4 0/3] phy: Add driver for lan966x Serdes driver

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Date:   Wed, 20 Oct 2021 11:42:26 +0200
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <kishon@...com>, <vkoul@...nel.org>, <robh+dt@...nel.org>,
        <andrew@...n.ch>, <alexandre.belloni@...tlin.com>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH v4 0/3] phy: Add driver for lan966x Serdes driver

This patch serie adds support for Microchip lan966x serdes. The lan966x
device contains has 7 interfaces, consisting of 2 copper transceivers,
3 Serdes and 2 RGMII interfaces. Two of the Serdes support QSGMII.
The driver also adds the functionality of "muxing" the interfaces to
different logical ports.

The following table shows which interfaces can be supported by the port.

PortNumber    Max Speed    Ethernet interface options
    0            1Gbps       CuPHY, 1G SGMII or QSGMII
    1            1Gbps       CuPHY, 1G SGMII or QSGMII
    2          2.5Gbps       2.5G SGMII, QSGMII, RGMII
    3          2.5Gbps       2.5G SGMII, QSGMII, RGMII
    4          2.5Gbps       2.5G SGMII, QSGMII
    5            1Gbps       QSGMII, RGMII
    6            1Gbps       QSGMII, RGMII
    7            1Gbps       QSGMII

v3->v4:
- update description of the driver
- removed unused registers
- use bitfield operations in the registers
- add macros for PLL configuration
- move macros and structs at the top of the file

v2->v3:
- remove unused includes
- add missing '...' in microchip,lan966x-serdes.yaml
- rename lan966x-serdes.h to phy-lan966x-serdes.h
- Rename CU->PHY and RG->RGMII
- update commit message for PATCH 2

v1->v2:
- replace the regmap with iomem
- update DT bindings


Horatiu Vultur (3):
  dt-bindings: phy: Add lan966x-serdes binding
  dt-bindings: phy: Add constants for lan966x serdes
  phy: Add lan966x ethernet serdes PHY driver

 .../phy/microchip,lan966x-serdes.yaml         |  59 ++
 drivers/phy/microchip/Kconfig                 |   8 +
 drivers/phy/microchip/Makefile                |   1 +
 drivers/phy/microchip/lan966x_serdes.c        | 548 ++++++++++++++++++
 drivers/phy/microchip/lan966x_serdes_regs.h   | 209 +++++++
 include/dt-bindings/phy/phy-lan966x-serdes.h  |  14 +
 6 files changed, 839 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/microchip,lan966x-serdes.yaml
 create mode 100644 drivers/phy/microchip/lan966x_serdes.c
 create mode 100644 drivers/phy/microchip/lan966x_serdes_regs.h
 create mode 100644 include/dt-bindings/phy/phy-lan966x-serdes.h

-- 
2.33.0