Re: [PATCH v7 net-next 6/8] net: ethernet: ti: am65-cpsw-qos: Add Frame Preemption MAC Merge support
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2023-12-04 11:10:17
On Fri, Dec 01, 2023 at 03:58:00PM +0200, Roger Quadros wrote:
Add driver support for viewing / changing the MAC Merge sublayer parameters and seeing the verification state machine's current state via ethtool. As hardware does not support interrupt notification for verification events we resort to polling on link up. On link up we try a couple of times for verification success and if unsuccessful then give up. The Frame Preemption feature is described in the Technical Reference Manual [1] in section: 12.3.1.4.6.7 Intersperced Express Traffic (IET – P802.3br/D2.0) Due to Silicon Errata i2208 [2] we set limit min IET fragment size to 124. [1] AM62x TRM - https://www.ti.com/lit/ug/spruiv7a/spruiv7a.pdf [2] AM62x Silicon Errata - https://www.ti.com/lit/er/sprz487c/sprz487c.pdf Signed-off-by: Roger Quadros <rogerq@kernel.org> ---
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> pw-bot: under-review