[PATCH net-next v2 0/2] net: stmmac: dwmac-socfpga: Add Agilex5 TSN GMAC support

[muhammad . nazim . amirul . nazle . asmade]

From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@xxxxxxxxxx>

This series adds support for the gmac1 TSN port on the Intel SoCFPGA
Agilex5 SoCDK TSN Config2 board.

The TSN port (gmac1) connects to its PHY through a GMII-to-RGMII converter
implemented as FPGA soft IP. This converter provides the RGMII TX/RX clock
delays, requiring the MAC interface selector to be configured for GMII while
the PHY-facing interface is configured as RGMII without delay duplication.

Patch 1 documents the altr,socfpga-stmmac-agilex5-tsn compatible. Patch 2
adds dedicated match .data ops for the required interface setup.

The board-level binding and DTS patches will be sent separately to the
SoCFPGA tree.

This is a reposted version with a fix based on Jakub Kicinski's review:
https://lore.kernel.org/all/20260928184340.51da489c@xxxxxxxxxx/

v2:
  - Extend the interrupt/interrupt-names/dma-coherent allOf conditional in
    the net binding to match altr,socfpga-stmmac-agilex5-tsn, per Jakub
    Kicinski / the netdev review bot. The TSN port uses the same
    DWXGMAC-2.10 core, so it must take the 17-interrupt, dma-coherent
    branch rather than the single-interrupt else branch.

These two patches were previously posted as patches 3 and 4 of the
"Add Agilex5 SoCDK TSN Config2 board support" series (up to v6), then
reposted as a standalone net-next series per Jakub Kicinski's request.
History from the board series:

v6:
  - Put altr,socfpga-stmmac-agilex5-tsn in the same compatible enum as
    altr,socfpga-stmmac-agilex5 in the net binding, per Krzysztof Kozlowski.

v5:
  - Replace of_device_is_compatible() probe check with dedicated
    socfpga_agilex5_tsn_gmac_ops via match .data, per Krzysztof Kozlowski
    and Dinh Nguyen.
  - Drop altr,socfpga-stmmac-agilex5 fallback from the TSN compatible list
    and rewrite the net binding commit message to explain the hardware
    difference, per Krzysztof Kozlowski.

v4:
  - Add Reviewed-by from Andrew Lunn on the driver patch.

v2 (board series):
  - Replace mac-mode DT property with compatible string-based detection per
    Andrew Lunn's feedback.
  - Use phy-mode = "rgmii-id" to correctly reflect MAC-side delay handling.
  - Rename compatible string to altr,socfpga-stmmac-agilex5-tsn for
    consistency with existing altr,socfpga-stmmac-* compatibles.
  - Add DT binding documentation for new net compatible string (new patch).

Nazim Amirul (2):
  dt-bindings: net: altr,socfpga-stmmac: Add
    altr,socfpga-stmmac-agilex5-tsn compatible
  net: stmmac: dwmac-socfpga: Add support for Agilex5 TSN GMAC with FPGA
    converter

 .../bindings/net/altr,socfpga-stmmac.yaml     |  9 ++++++--
 .../ethernet/stmicro/stmmac/dwmac-socfpga.c   | 23 ++++++++++++++++++-
 2 files changed, 29 insertions(+), 3 deletions(-)

-- 
2.43.7