[PATCH v4 0/3] Add support for Nuvoton MA35D1 GMAC

[Joey Lu]

This patch series is submitted to add GMAC support for Nuvoton MA35D1
SoC platform. This work involves implementing a GMAC driver glue layer
based on Synopsys DWMAC driver framework to leverage MA35D1's dual GMAC
interface capabilities.

Overview:
  1. Added a GMAC driver glue layer for MA35D1 SoC, providing support for
  the platform's two GMAC interfaces.
  2. Added device tree settings, with specific configurations for our
  development boards:
    a. SOM board: Configured for two RGMII interfaces.
    b. IoT board: Configured with one RGMII and one RMII interface.
  3. Added dt-bindings for the GMAC interfaces.

v4:
  - Update nuvoton,ma35d1-dwmac.yaml
    - Remove unnecessary property 'select'.
    - Remove unnecessary compatible entries and fix items.
    - Specify number of entries for 'reg'.
    - Remove already defined property 'phy-handle'.
    - Update example.
    - Modify the property internal path delay to match the driver.
  - Update dtsi
    - Move 'status' to be the last property.
  - Update dwmac-nuvoton driver
    - Use .remove instead of .remove_new.
    - Use dev_err_probe instead.

v3:
  - Update nuvoton,ma35d1-dwmac.yaml
    - Fix for dt_binding_check warnings/errors.
    - Add compatible in snps,dwmac.yaml.
  - Update dtsi
    - Update dtsi to follow examples in yaml.
  - Update dwmac-nuvoton driver
    - Fix for auto build test warnings.
    - Invalid path delay arguments will be returned.

v2:
  - Update nuvoton,ma35d1-dwmac.yaml
    - Rename file to align with the compatible property.
    - Add an argument to syscon to replace mac-id,
      with corresponding descriptions.
    - Use tx-internal-delay-ps and rx-internal-delay-ps properties for
      configurable path delay with corresponding descriptions,
      allowing selection between GMAC internal and PHY.
    - Add all supported phy-mode options.
    - Remove unused properties.
  - Update dtsi
    - Modify syscon configuration to include an argument for
      GMAC interface selection.
  - Update dwmac-nuvoton driver
    - Remove redundant device information print statements.
    - Remove non-global parameters.
    - Retrieve GMAC interface selection from the syscon argument.
    - Parse Tx and Rx path delays by correct properties.
    - Update configurations to support Wake-on-LAN.

Joey Lu (3):
  dt-bindings: net: nuvoton: Add schema for Nuvoton MA35 family GMAC
  arm64: dts: nuvoton: Add Ethernet nodes
  net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family

 .../bindings/net/nuvoton,ma35d1-dwmac.yaml    | 134 +++++++++++++
 .../devicetree/bindings/net/snps,dwmac.yaml   |   1 +
 .../boot/dts/nuvoton/ma35d1-iot-512m.dts      |  12 ++
 .../boot/dts/nuvoton/ma35d1-som-256m.dts      |  10 +
 arch/arm64/boot/dts/nuvoton/ma35d1.dtsi       |  54 ++++++
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |  11 ++
 drivers/net/ethernet/stmicro/stmmac/Makefile  |   1 +
 .../ethernet/stmicro/stmmac/dwmac-nuvoton.c   | 179 ++++++++++++++++++
 8 files changed, 402 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c

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2.34.1