This series' goal is adding support to the MACB driver for EyeQ5 GEM.
The specifics for this compatible are:
- HW cannot add dummy bytes at the start of IP packets for alignment
purposes. The behavior can be detected using DCFG6 so it isn't
attached to compatible data.
- The hardware LSO/TSO is known to be buggy: add a compatible
capability flag to force disable it.
- At init, we have to wiggle two syscon registers that configure the
PHY integration.
In past attempts [0] we did it in macb_config->init() using a syscon
regmap. That was far from ideal so now a generic PHY driver
abstracts that away. We reuse the bp->sgmii_phy field used by some
compatibles.
We have to add a phy_set_mode() call as the PHY power on sequence
depends on whether we do RGMII or SGMII.
This V2 sees the generic PHY driver drivers/phy/phy-eyeq5-eth.c move
into its separate series. Here you only get net-next patches.
Thanks,
Have a nice day,
Théo
[0]: https://lore.kernel.org/lkml/20250627-macb-v2-15-ff8207d0bb77@bootlin.com/
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
---
Changes in v2:
- Drop non net-next patches.
- Re-run get_maintainers.pl to shorten the To/Cc list.
- Rebase upon latest net-next; no changes. Tested on HW.
- Link to v1: https://lore.kernel.org/r/20251021-macb-eyeq5-v1-0-3b0b5a9d2f85@bootlin.com
Past versions of the MACB EyeQ5 patches:
- March 2025: [PATCH net-next 00/13] Support the Cadence MACB/GEM
instances on Mobileye EyeQ5 SoCs
https://lore.kernel.org/lkml/20250321-macb-v1-0-537b7e37971d@bootlin.com/
- June 2025: [PATCH net-next v2 00/18] Support the Cadence MACB/GEM
instances on Mobileye EyeQ5 SoCs
https://lore.kernel.org/lkml/20250627-macb-v2-0-ff8207d0bb77@bootlin.com/
- August 2025: [PATCH net v3 00/16] net: macb: various fixes & cleanup
https://lore.kernel.org/lkml/20250808-macb-fixes-v3-0-08f1fcb5179f@bootlin.com/
---
Théo Lebrun (5):
dt-bindings: net: cdns,macb: add Mobileye EyeQ5 ethernet interface
net: macb: match skb_reserve(skb, NET_IP_ALIGN) with HW alignment
net: macb: add no LSO capability (MACB_CAPS_NO_LSO)
net: macb: rename bp->sgmii_phy field to bp->phy
net: macb: Add "mobileye,eyeq5-gem" compatible
.../devicetree/bindings/net/cdns,macb.yaml | 10 +++
drivers/net/ethernet/cadence/macb.h | 6 +-
drivers/net/ethernet/cadence/macb_main.c | 92 +++++++++++++++++-----
3 files changed, 89 insertions(+), 19 deletions(-)
---
base-commit: 962ac5ca99a5c3e7469215bf47572440402dfd59
change-id: 20251020-macb-eyeq5-fe2c0d1edc75
Best regards,
--
Théo Lebrun <theo.lebrun@bootlin.com>