nrf5340 Ethernet and BLE Mesh coexist

Question

Setup:

HW:
Fanstel-WT02C40C (nrf5340/7002)
WIZ5500 ethernet

Versions tested:
ncs-v2.6.0
ncs-v2.5.2
ncs-v2.4.2

Issue:

When attempting to integrate Ethernet and BLE I'm running into an issue where DHCP fails to start the iface on the versions listed above, when introducing CONFIG_BT=y into my system.

I have a working implementation for both my BLE Mesh and for Ethernet, which failed when integrating together so I decided to start piecemeal it together slowly, and on the first step of adding CONFIG_BT=y to my project, is when DHCP begins failing to start Ethernet.

.overlay

&spi4 {
    w5500: w5500@0 {
        compatible = "wiznet,w5500";
        reg = <0>;
        spi-max-frequency = <10000000>;
        zephyr,random-mac-address;
        int-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
        reset-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
    };
};

.conf

# === Ethernet
CONFIG_NETWORKING=y
CONFIG_NET_IPV4=y
CONFIG_NET_IPV6=n
CONFIG_NET_DHCPV4=y
CONFIG_NET_LOG=y
CONFIG_NET_SHELL=y
CONFIG_NET_STATISTICS=y
CONFIG_DNS_RESOLVER=y
CONFIG_NET_L2_ETHERNET=y
CONFIG_ETHERNET_LOG_LEVEL_DBG=y
CONFIG_NET_L2_ETHERNET_LOG_LEVEL_DBG=y
CONFIG_NET_DHCPV4_LOG_LEVEL_DBG=y
CONFIG_NET_L2_ETHERNET_MGMT=y
CONFIG_ETH_W5500=y
CONFIG_ETH_W5500_TIMEOUT=1000
CONFIG_NET_MGMT=y

Code:

    struct net_if *iface;
    iface = net_if_get_default();
    if (iface == NULL) {
        printk("Error getting default network interface.\n");
        return;
    }

    // Link status callback handler
    net_mgmt_init_event_callback(&cb, net_mgmt_handler, NET_EVENT_ETHERNET_CARRIER_ON | NET_EVENT_ETHERNET_CARRIER_OFF);
    net_mgmt_add_event_callback(&cb);

    // Start DHCP
    net_dhcpv4_start(iface);

I also need to add WiFi to it, but that's another bridge to be crossed after dealing with this.

waderq21 · Accepted Answer

I had another revision of my board made, though nothing related to Ethernet changed, but I'm no longer running into this issue anymore. 
 I did have to write up a static pm file due to BT creating a child image causing my partition definitions to be ignored, I don't think this is relevant but the only thing in my changes related to either Ethernet or BT. 
 Closing this issue as it seems to be an issue with my first revision board.

nrf5340 Ethernet and BLE Mesh coexist

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