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feat(esp_eth): add ESP32-S31 EMAC support

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Add internal EMAC support for ESP32-S31, including:
- HAL/LL layer: emac_ll, emac_hal, emac_clk, emac_periph for S31
- SOC layer: register structs, soc_caps, peripherals linker script,
  interrupt definitions
- MAC driver: clock source configuration via Kconfig, GPIO/DMA
  adaptations, PHY register defs for clause-45 MDIO
- Ethernet examples updated for S31 (basic, build-test-rules, PTP
  readme)
- Refactored existing ESP32/ESP32-P4 EMAC code for shared patterns
  (emac_clk extraction, struct alignment, periph descriptor cleanup)
This commit is contained in:
Ondrej Kosta
2026-05-21 15:59:42 +08:00
parent c7d6c41198
commit edbf8856ae
39 changed files with 3558 additions and 173 deletions
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examples/ethernet/ptp/README.md
+2 -2
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@@ -1,5 +1,5 @@
| Supported Targets | ESP32-P4 |
| ----------------- | -------- |
| Supported Targets | ESP32-P4 | ESP32-S31 |
| ----------------- | -------- | --------- |
# Time Synchronization over PTP
(See the README.md file in the upper level 'examples' directory for more information about examples.)