Gate Ethernet module on managed SPI PHY components for IDF 6.

In-tree CONFIG_ETH_SPI_ETHERNET_* is gone; enable eth when
espressif W5500/DM9051/KSZ8851 components are present.

Author: sentinelt

src/eth.rs

@@ -14,7 +14,11 @@ use embedded_svc::eth::*;
     any(
         esp_idf_eth_spi_ethernet_dm9051,
         esp_idf_eth_spi_ethernet_w5500,
-        esp_idf_eth_spi_ethernet_ksz8851snl
+        esp_idf_eth_spi_ethernet_ksz8851snl,
+        // ESP-IDF 6.0+ managed components
+        esp_idf_comp_espressif__dm9051_enabled,
+        esp_idf_comp_espressif__w5500_enabled,
+        esp_idf_comp_espressif__ksz8851snl_enabled,
     )
 ))]
 use crate::hal::gpio;

src/lib.rs

@@ -48,13 +48,18 @@ pub mod espnow;
     esp_idf_comp_esp_event_enabled,
 ))]
 #[cfg(any(
+    // On-chip EMAC (ESP32); RMII PHYs such as lan87xx are used only with EMAC
     all(esp32, esp_idf_eth_use_esp32_emac),
     any(
         esp_idf_eth_spi_ethernet_dm9051,
         esp_idf_eth_spi_ethernet_w5500,
-        esp_idf_eth_spi_ethernet_ksz8851snl
+        esp_idf_eth_spi_ethernet_ksz8851snl,
+        // ESP-IDF 6.0+ ships SPI Ethernet PHYs as managed components
+        esp_idf_comp_espressif__dm9051_enabled,
+        esp_idf_comp_espressif__w5500_enabled,
+        esp_idf_comp_espressif__ksz8851snl_enabled,
     ),
-    esp_idf_eth_use_openeth
+    esp_idf_eth_use_openeth,
 ))]
 pub mod eth;
 #[cfg(all(feature = "alloc", esp_idf_comp_esp_event_enabled))]