From 7e6ff473631c84a1b5f717bea7d807a54d90b245 Mon Sep 17 00:00:00 2001
From: David Cermak <cermak@espressif.com>
Date: Tue, 20 Apr 2021 13:48:34 +0200
Subject: [PATCH] Examples: Add basic ethernet example of using ksz8851

---
 examples/ethernet/basic/main/Kconfig.projbuild   |  8 ++++++++
 .../ethernet/basic/main/ethernet_example_main.c  | 16 +++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/examples/ethernet/basic/main/Kconfig.projbuild b/examples/ethernet/basic/main/Kconfig.projbuild
index ead8588090..2d01147086 100644
--- a/examples/ethernet/basic/main/Kconfig.projbuild
+++ b/examples/ethernet/basic/main/Kconfig.projbuild
@@ -32,6 +32,14 @@ menu "Example Configuration"
             select ETH_SPI_ETHERNET_W5500
             help
                 Select external SPI-Ethernet module (W5500).
+
+        config EXAMPLE_USE_KSZ8851SNL
+            bool "KSZ8851SNL Module"
+            select EXAMPLE_USE_SPI_ETHERNET
+            select ETH_USE_SPI_ETHERNET
+            select ETH_SPI_ETHERNET_KSZ8851SNL
+            help
+                Select external SPI-Ethernet module (KSZ8851SNL).
     endchoice # EXAMPLE_ETHERNET_TYPE
 
     if EXAMPLE_USE_INTERNAL_ETHERNET
diff --git a/examples/ethernet/basic/main/ethernet_example_main.c b/examples/ethernet/basic/main/ethernet_example_main.c
index e448797d14..edcbc6bec5 100644
--- a/examples/ethernet/basic/main/ethernet_example_main.c
+++ b/examples/ethernet/basic/main/ethernet_example_main.c
@@ -112,7 +112,21 @@ void app_main(void)
         .quadhd_io_num = -1,
     };
     ESP_ERROR_CHECK(spi_bus_initialize(CONFIG_EXAMPLE_ETH_SPI_HOST, &buscfg, 1));
-#if CONFIG_EXAMPLE_USE_DM9051
+
+#if CONFIG_EXAMPLE_USE_KSZ8851SNL
+    spi_device_interface_config_t devcfg = {
+        .mode = 0,
+        .clock_speed_hz = CONFIG_EXAMPLE_ETH_SPI_CLOCK_MHZ * 1000 * 1000,
+        .spics_io_num = CONFIG_EXAMPLE_ETH_SPI_CS_GPIO,
+        .queue_size = 20
+    };
+    ESP_ERROR_CHECK(spi_bus_add_device(CONFIG_EXAMPLE_ETH_SPI_HOST, &devcfg, &spi_handle));
+    /* KSZ8851SNL ethernet driver is based on spi driver */
+    eth_ksz8851snl_config_t ksz8851snl_config = ETH_KSZ8851SNL_DEFAULT_CONFIG(spi_handle);
+    ksz8851snl_config.int_gpio_num = CONFIG_EXAMPLE_ETH_SPI_INT_GPIO;
+    esp_eth_mac_t *mac = esp_eth_mac_new_ksz8851snl(&ksz8851snl_config, &mac_config);
+    esp_eth_phy_t *phy = esp_eth_phy_new_ksz8851snl(&phy_config);
+#elif CONFIG_EXAMPLE_USE_DM9051
     spi_device_interface_config_t devcfg = {
         .command_bits = 1,
         .address_bits = 7,