Part Number: TDA4VM
Hello TI,
as a result of having a working eth1 connection utilizing EthFw (CPSW9G) under Linux, I would like to completely disable the previously existing eth0 that utilizes CPSW2G (RGMII) connection.
I am aware that I can simply use:
sudo ifconfig eth0 down
or as described here (https://unix.stackexchange.com/questions/111256/how-to-permanently-disable-a-network-interface in Method #2) disable it “permanently” via /etc/network/interfaces/, however, those are the changes that can be easily reverted under Linux.
Is there any method that influences build process of Linux/UBoot/DeviceTree that would make enabling eth0 impossible without rebuilding of the Linux image or device tree blob?
------------
I have tried the following:
I added:
status = "disabled";
under
mcu_cpsw: ethernet@46000000 {
node in k3-j721e-mcu-wakeup.dtsi
and the same under:
&mcu_cpsw {
pinctrl-names = "default";
// pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;
pinctrl-0 = <&mcu_cpsw_pins_default>;
status = "disabled";
cpts {
ti,pps = <3 1>;
};
};
in k3-j721e-common-proc-board.dts - it prevented CPSW9G ports from working as well (eth1 is not shown in ifconfig).
Linux while booting prints the following:
[ 8.144563] virtio_rpmsg_bus virtio0: rpmsg host is online
[ 8.150279] virtio_rpmsg_bus virtio0: creating channel rpmsg-kdrv addr 0x1a
[ 8.153015] remoteproc4#vdev0buffer: registered virtio0 (type 7)
[ 8.159068] rpmsg-kdrv-eth-switch rpmsg-kdrv-2-mpu_1_0_ethswitch-device-0: Device info: permissions: 07FFFFFF uart_id: 2
[ 8.171040] remoteproc remoteproc4: remote processor 5c00000.r5f is now up
[ 8.180895] rpmsg-kdrv-eth-switch rpmsg-kdrv-2-mpu_1_0_ethswitch-device-0: FW ver 0.1 (rev 1) 29/Dec/2020 SHA:8630d10d
[ 8.200716] virtio_rpmsg_bus virtio0: creating channel rpmsg_chrdev addr 0x15
[ 8.298191] ti-sci-inta 33d00000.interrupt-controller: Parent IRQ allocation failed
[ 8.363087] genirq: Failed to request resources for main_r5fss_cpsw9g_virt_mac0 (irq 60) on irqchip MSI-INTA
[ 8.439056] j721e-cpsw-virt-mac main_r5fss_cpsw9g_virt_mac0: failure requesting tx irq 60, -22
[ 8.565824] j721e-cpsw-virt-mac: probe of main_r5fss_cpsw9g_virt_mac0 failed with error -22
Is there any way of disabling mcu_cpsw without affecting the CPSW9G?
