xavier ethernet phy chip 88E1512PB2 device tree file?

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

we ports xavier module to our carrier board, and use micrel KSZ9031 to replace marvell 88E1512 on carrier board.
but i can’t find out the device tree element about the 88E1512, where is the location should i change?

i found some messages in the file:
hardware/nvidia/platform/t19x/common/kernel-dts/t19x-common-platforms/tegra194-platforms-eqos.dtsi
like below:
mdio {
compatible = “nvidia,eqos-mdio”;
#address-cells = <1>;
#size-cells = <0>;

        phy0: ethernet-phy@0 {
            reg = <0>;
            interrupt-parent = <&tegra_main_gpio>;
            interrupts = <TEGRA194_MAIN_GPIO(G, 4) IRQ_TYPE_LEVEL_LOW>;
            marvell,copper-mode;
            /* Setup LED[2] as interrupt pin (active low) */
            marvell,reg-init = <0x03 0x12 0x7fff 0x880>;
        };
    };

but which file point to marvell 88E1512 ? thanks

2

I don’t think there is a device tree for 88E1512. Marvell driver does not read any parameters from device tree.

3

not in device tree, then which file specify the 88E1512 to the xavier MDIO? or use PHY ID? i want to replace it, thanks.

4

liu.jialu,

This work would be handled by linux PHY framework. Please check the /sys/bus/mdio_bus/driver and see if there is any driver that is compatible with your PHY.

It can support up to 32 PHY devices.