Thread (6 messages) 6 messages, 3 authors, 13d ago

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

From: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date: 2026-09-16 08:00:53
Also in: linux-arm-kernel, linux-devicetree, linux-sunxi, lkml

Hi,

On 9/16/26 05:07, James Hilliard wrote:
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 <redacted>
---
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
I didn't see that V2, but in all fairness you're not supposed to iterate
this fast. 24 hours between submissions, please :

https://docs.kernel.org/process/maintainer-netdev.html

There were discussions on Alastair's submission too, the MUX, clock,
reset part.

Adding Alastair so that he can test it on his board, and see what's missing.

Maxime
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help