[ethernet] SPI devices require esp-idf

The W5500 driver will only be built with esp-idf.

Signed-off-by: Bjørn Mork <bjorn@mork.no>

esphome/components/ethernet/__init__.py

@@ -233,6 +233,8 @@ CONFIG_SCHEMA = cv.All(
 def _final_validate(config):
     if config[CONF_TYPE] not in SPI_ETHERNET_TYPES:
         return
+    if not CORE.using_esp_idf:
+        raise cv.Invalid("SPI ethernet requires ESP-IDF")
     if spi_configs := fv.full_config.get().get(CONF_SPI):
         variant = get_esp32_variant()
         if variant in (VARIANT_ESP32C3, VARIANT_ESP32S2, VARIANT_ESP32S3):
@@ -293,7 +295,6 @@ async def to_code(config):
         cg.add(var.set_clock_speed(config[CONF_CLOCK_SPEED]))
 
         cg.add_define("USE_ETHERNET_SPI")
-        if CORE.using_esp_idf:
         add_idf_sdkconfig_option("CONFIG_ETH_USE_SPI_ETHERNET", True)
         add_idf_sdkconfig_option("CONFIG_ETH_SPI_ETHERNET_W5500", True)
     elif config[CONF_TYPE] == "OPENETH":

tests/components/ethernet/common-w5500.yaml

@@ -1,14 +0,0 @@
-ethernet:
-  type: W5500
-  clk_pin: 19
-  mosi_pin: 21
-  miso_pin: 23
-  cs_pin: 18
-  interrupt_pin: 36
-  reset_pin: 22
-  clock_speed: 10Mhz
-  manual_ip:
-    static_ip: 192.168.178.56
-    gateway: 192.168.178.1
-    subnet: 255.255.255.0
-  domain: .local

tests/components/ethernet/test-w5500.esp32-ard.yaml

@@ -1 +0,0 @@
-<<: !include common-w5500.yaml

tests/components/ethernet/test-w5500.esp32-idf.yaml

@@ -1 +1,14 @@
-<<: !include common-w5500.yaml
+ethernet:
+  type: W5500
+  clk_pin: 19
+  mosi_pin: 21
+  miso_pin: 23
+  cs_pin: 18
+  interrupt_pin: 36
+  reset_pin: 22
+  clock_speed: 10Mhz
+  manual_ip:
+    static_ip: 192.168.178.56
+    gateway: 192.168.178.1
+    subnet: 255.255.255.0
+  domain: .local