[PATCH net-next v2] net: stmmac: dwxgmac2: add XGMAC timestamp interrupt support

Zxyan Zhu zxyan0222 at gmail.com
Wed Aug 12 05:59:12 PDT 2026


Hi Maxime,

On 8/12/26 5:10 PM, Maxime Chevallier wrote:
> If there's an interrupt storm, then this should probably be a fix for -net
> with a Fixes tag.

There is no interrupt storm. XGMAC_TSIE was never enabled before this
patch (XGMAC_INT_DEFAULT_EN was LPIIE | PMTIE only), and
dwxgmac2_host_irq_status() masks the status with the enable mask, so
XGMAC_INT_TSIS could never fire. The actual symptom is that
auxiliary-snapshot extts events were never reported -- a feature that
was never wired up, not a live interrupt storm.

So I'd like to keep this on net-next as a new feature rather than
retarget it to net.

Thanks,
Zxyan




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