[PATCH net-next v2 0/2] net: stmmac: add Allwinner H616 EMAC1 support

[James Hilliard]

The H616 secondary EMAC supports RMII at 10/100 Mbps and uses a separate
system-control clock register at offset 0x34. Add its binding and a
sun8i stmmac variant using that register. A distinct compatible without
an older fallback prevents the driver from using EMAC0's clock register.

EMAC1 connects internally to the co-packaged AC200 or AC300 EPHY and has
no external PHY pins. Leave PHY initialization to the PHY driver instead
of using the H3 internal-PHY controls. The RMII-only variant does not
expose the RGMII clock-delay properties.

The AC200/AC300 EPHY driver and package bindings are already in
net-next. This series separates the H616 EMAC1 MAC driver and binding
support from the earlier combined series. PWM, MFD and device-tree
enablement are being handled separately.

Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>
---
Changes in v2:
- Drop EMAC1 TX/RX clock-delay property support and keep the existing
  RGMII-only delay descriptions unchanged, as requested by Maxime Ripard.
- Clarify that EMAC1 connects internally to a co-packaged PHY, not an
  external PHY or the H3-style internal-PHY controls.
- Rebase onto current net-next.
- Link to v1: https://patch.msgid.link/20260915-submit-h616-emac1-v1-v1-0-195de0bb1f8a@gmail.com

---
James Hilliard (2):
      dt-bindings: net: allwinner: add H616 EMAC1
      net: stmmac: sun8i: add support for Allwinner H616 EMAC1

 .../bindings/net/allwinner,sun8i-a83t-emac.yaml          | 13 +++++++++++++
 Documentation/devicetree/bindings/net/snps,dwmac.yaml    |  2 ++
 drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c        | 16 ++++++++++++++++
 3 files changed, 31 insertions(+)
---
base-commit: 87b80c2f6b05cad9f0ff9136709c62a0f59923e3
change-id: 20260914-submit-h616-emac1-v1-143703842abb

Best regards,
--  
James Hilliard <james.hilliard1 at gmail.com>