Re: [PATCH v3 3/8] net: stmmac: dwmac-meson8b: add support for the Amlogic T7

[Martin Blumenstingl]

On Sat, Oct 10, 2026 at 12:59 PM Lucas Tanure <tanure@xxxxxxxxx> wrote:
>
> The glue registers on the T7 are laid out exactly as the G12A ones, RX
> delay field included, so the T7 can reuse the G12A settings.
>
> What it does not share is how the controller reaches memory. That path
> runs through a pipeline stage with a gate of its own, and no other
> device has any use for that gate. Nothing claims it, so it is switched
> off as unused and a transfer that has started can never finish.
>
> Without that gate the controller cannot do DMA at all, so it is
> required rather than optional: a clear probe failure beats an
> undiagnosable hang later.
>
> Assisted-by: LLM
> Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> Reviewed-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
> Signed-off-by: Lucas Tanure <tanure@xxxxxxxxx>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>